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Bert Visser's Directory of Dredgers  (ID: 48297)

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, the upper pipe section is until now the longest of its kind ever built. The installation will be able to work with a pressure of 12 bar. Several critical components of the installation, like the submerged pump, have been made out of the extremely wear-resistant material MAX5 . The oil-filled electric motor is equipped with IHC s patented passive pressure compensating devices. The deep suction installation is to be installed on the dredger s starboard side but it is not yet known where and when this will take place. When equipped with its new suction pipe and dredging at a depth of 120 m, the Pearl River will be able to load its hopper with sand in approx. 3 hours. Currently DEME also has what will be the world s largest cutter suction dredger, the D Artagnan , under construction at IHC Holland in Kinderdijk and in his speech, Mr. Theo van de Kerckhove made mention that DEME has very concrete plans for the new building of dredgers, especially trailing suction hopper dredgers, plans to be realized in the very near future. The 'Xin Hai Long' performing trials A new type of draghead This special day for its customers, was also the occasion for IHC P & S to present a complete new type of draghead, specially developed for hard packed fine sand, and called the Wild Dragon Draghead . The development of this draghead started with tests that were carried out by IHC s research and development division MTI in close cooperation with dredging contractor Van Oord. These tests have been carried out at WL Delft Hydraulics and at IHC s own laboratory. Based on new insights gained from these tests of the fundamental excavation process during trailing dredging, IHC Parts & Services designed this new type of draghead, characterized amongst others by a double row of cutting teethes and an inventive application of water jets, also in the teethes themselves. The 'Wild Dragon Draghead' on board the 'Xin Hai Long' demonstrating the power of its water jets The new draghead has already been tried out in real dredging circumstances, on the tshd Xin Hai Long in China. The area where the Xin Hai Long normally operates, the Shanghai estuary, is known for its layers of extremely hard packed sand and has proved to be impossible to dredge by tshd s with normally acceptable productions. Cutter suction dredgers could do the job but their deployment is out of the question here due to the intensive vessel traffic and wave conditions. The use of the Wild Dragon Draghead on the Xin Hai Long was very successful. During the trials, dredging operations have been carried out with two types of dragheads simultaneously, a normal one at port side and a Wild Dragon Draghead at starboard side and the improvement in production was up to 100 %. Globally active Theme of the day at Kinderdijk was: far away and also close by , referring to the Global Supply Chain meaning that with four offices worldwide, IHC P & S is now able to offer support and services right on the world s dredging hotspots of the moment. Besides the main office in Kinderdijk, IHC P & S now has also offices in Dubai, Singapore and China and focuses on assisting dredger owners in their aim to obtain the shortest downtime possible of their equipment in case of maintenance and repair. - December 2004 - Bert Visser's Directory of Dredgers Dredging works to be carried out in Port Louis Harbour, Mauritius Dredging works are expected to start soon in the English Channel near Port Louis on the island of Mauritius. The Port Louis Harbour is strategically located on the shipping routes linking Africa, Asia, Australia and Europe and handles more than 99% of the trade of Mauritius. Cargo handled at the port experienced significant growth during past years. The Mauritius Port Authority (MPA) has therefore been required to address planning of the future development of the port to accommodate this growth and future projections. Towards this, MPA has already taken initiatives to construct a dedicated oil jetty and to extend the container terminal. More importantly, the port has to bring in bigger vessels by increasing its channel depth and therefore, the MPA has proposed to undertake dredging works in the English Channel. The Port Louis harbour, situated on the northwest side of the island of Mauritius, is located in a natural protected bay. It covers an area of about 300 hectares. The English Channel forms a part of the harbour and is the main approach channel to the Mauritius Container Terminal (MCT). A turning circle of 420 m diameter exists in front of the 560 m long Container terminal. The existing depth of the English channel is -13.0 m to 13.5 m. To accommodate bigger size vessels, the channel will be dredged to a depth of 14.5 m with 150 m extension of the container quay. Cutter suction dredging will be carried out to attain the required channel depth. Dredging would be carried out over a period of five months. The dredged material is proposed to be disposed at the Fort William area. The reason for selecting the location is that the Fort William site is already a sand storage site with about 1.5 million m3 of material stocked for commercialization and is expected that sand quarry would still be operational for another 5 years. The site was also used earlier for reclamation by other agencies. The dredged material primarily consists of sediment sand and silt. The expected amount of dredged material is approx. 0.4 million m3. Dredged material will be transported to the disposal site through dump barges. The tender for this project is scheduled to take place on 9 December 2004. - December 2004 - Bert Visser's Directory of Dredgers Double Suction Tube Position Indication System for 'Port M chins' Recently Damen Dredging Equipment delivered two Suction Tube Position Indication (STPI) systems to the hopper dredger 'Port M chins' of Dragages Verreault Inc. in Canada. The system, being the transmitters plus the necessary soft & hardware, were mounted on an over 50 years old vessel, as it is still in good condition. The 750 m 3 hopper dredger, built in 1949, was provided with an old Meconaut suction pipe position system, which working is based on the bubble-principle. This system worked well over the past 40 years, yet time had come for a state-of-the-art trailing pipe positioning system. Should the 'Port M chins' be replaced in the future, the new system can be transferred to another dredger easily. The delivery of the entire system, complete with its transmitters, was done only 4 weeks after ordering. The installation only took 2 working days as the crew had already prepared all cabling. The old Meconaut system was not removed : even state-of-the-art new systems cannot compensate for the nostalgic feelings the old bubbling companion evokes. - November 2004 - Bert Visser's Directory of Dredgers Trailing suction hopper dredger 'Thor R' towed to Esbjerg The trailing suction hopper dredger 'Thor R' has been raised to the surface on the evening of 24 October 2004 by the floating crane 'Matador 3', after having been lying on the bottom of the 'Gr dyb' shipping lane near Esbjerg for almost a month . The dredger will be towed to a floating dock in the port of Esbjerg where at first repairs will be made in order to have the vessel float for itself again. If further repairs will be made will be decided afterwards. The salvage operation has been carried out under the responsibility of the insurance company TRYG and monitored by the Admiral Danish Fleet. The 'Thor R' had sunk in the access channel to the port of Esbjerg after having been been run into by the ship 'Ocean Ady' on 26 September 2004. Due to bad wheather conditions in this area, the salvage operation could not have been carried out earlier. Bert Visser's Directory of Dredgers Construction of third container terminal at Barcelona awarded for 51 million Euros On 14 October 2004, the administrative counsil of the port of Barcelona, the 'Autoridad Portuaria de Barcelona' (APB), has awarded the construction of the port's third container terminal, the 'Muelle Prat, Fase 1-A', to a temporary consortium of companies, consisting of Ferrovial Agroman and Cyes for the amount of 51,343,995 Euros. The new terminal will cover a surface of 62 hectares and will have a total quay length of 1,030 m. The 'Muelle Prat' will be the third and largest container terminal of the port of Barcelona. It is the port's objective to have the terminal fully operational by 2008. News News Instrumentation renewed on board of the "City of Cardiff" and the "City of Chichester" Two of UMA's trailing suction hopper dredgers, "City of Cardiff" and "City of Chichester", have seen a major renovation of their dredging instrumentation. The 1.400 m3 gravel dredgers, built in 1996 by Appledore Shipbuilders, have dredging equipment by Damen Dredging Equipment on board. This also goes for the dredging instrumentation. In order to follow the fast developments in this field, two state of the art systems have been installed for the Load & Draught Indicator and the Suction Tube Positioning System. Damen Dredging Equipment's electro technical department supplied all new software and hardware in order to replace the old DOS-software system. An industrial computer with Windows XP-PRO has been placed in the pump room, communicating with a workstation in the wheelhouse. The dredge master and the skipper have a 17" TFT monitor on their desk with the mouse/keyboard control. The loading or discharging process and vessels parameters are shown on one page, and the suction pipe position is visualised on another. The conveniently arranged new system thus relieves the dredge masters and the skippers tasks. Also, the accuracy of the new system is higher, even using the same sensors. The systems have been installed only 6 weeks after ordering. Installation was done within a couple of days, plus commissioning and training. The two dredgers have resumed their dredging tasks more accurate then ever! Page last updated 28/9/04 Bert Visser's Directory of Dredgers VOSTA LMG receives contract for CSD500 from Malaysian customer International engineering and contracting company VOSTA LMG has received a contract for an 'Engineering and Components' package of a cutter suction dredger type CSD500 from a first class partner in Malaysia. This contract includes the design of the dredger, critical dredge components such as dredge pump, cutterhead including ladder, operator cabin, on-site project management and training. The CSD500 will be built at the partner s facilities near Kuala Lumpur and is scheduled to be finalized mid 2005. The dismountable dredger will be equipped with a high performance and wear resistant VOSTA LMG HPD500 Dredge Pump and VOSTA LMG Cutter based on the proven TSC04 Cutterteeth System. The dredger will mainly be used for maintenance dredging in the Malaysian rivers, deltas and harbors. As included in the contract, VOSTA LMG will also take care of on site support during the construction phase and provide training for the crew on the dredger once finalized. Specifications of the CSD500 are: Total installed power: 1.274 kW Dredge pump power: 950 kW Cutter power: 175 kW Length o.a.: 38,0 m Breadth: 8,5 m Draught: 1,6 m Suction pipe: 1 x 500 mm Dredging depth: 15,0 m Bert Visser's Directory of Dredgers The 'Lexington', a cutter suction dredger for Cottrell Contracting Corporation, USA Cottrell Contracting Corporation, a dredging contractor based in the USA, will add a new medium-sized cutter suction dredger to its fleet of dredgers by the end of the summer of 2004. VOSTA LMG has designed this 18 CSD, named 'Lexington'. Also a component package including a spud carrier, cutter system including ladder have been delivered by VOSTA LMG and local project management will be handled via the US office VOSTA Inc. The dredger is being built in co-operation with Cottrell Contracting Corporation at the Tidewater Skanska Inc. shipyard in the USA. The 18 cutter suction dredger is a US equivalent of a CSD500, but has accommodation for 25 people onboard and is built to work in a variety of conditions. The current fleet of Cottrell Contracting needed to be extended due to an increase in workload in the United States. The contract of VOSTA LMG included the engineering of this dredger and the supply of major components such as dredge pump diesels and gearbox, generators, spud carrier, spuds and spud hoisting system, winches and a cutter ladder including a SC10 cutterhead. The dredger will be performing maintenance dredging in the USA on projects of Cottrell Contracting Corporation. The ship was designed in close cooperation with the owners, who also supervised the building at the local yard together with a senior engineer of VOSTA Inc., a wholly owned subsidiary of VOSTA LMG. The dredger can work at a maximum depth of 18 m (60 ft). Its length (over all) is 61 m (200 ft), its breadth 12 m (38 ft) and its draught 1.6 m (5.2 ft). The dredger can also work in wide cuts using its long and heavy anchor booms, its 200 kN hydraulically driven side wire winches and its hydraulically driven spud carriage with 25 m (83 ft) long spuds. The cutter unit, with a maximum available cutter power of 223 kW (300 hp), is designed and supplied by VOSTA LMG. This cutter is designed to work in sand, clay and cemented soils suitable for 300 hp. The cutting performance can be optimized at dredging depths of between 6 and 18 m below the waterline, using the variable cutting power. The dredger has a 450 mm (18 ) suction pipe diameter. The 1194 kW (1600 hp) Fairbanks Morse driven inboard dredge pump can be assisted by a submersible, electrically driven 600 kW (800 hp) dredge pump on the cutter ladder. The combination of both pumps makes the dredge capable of long distance pumping and dredging up to 60 ft. For safety reasons, the pump room has been separated from the engine room by a watertight bulkhead. The optimum layout and use of watertight doors combines an easily accessible engine room with high stability and safety. Two 910 kW generator sets are installed to supply the board net, hydraulic power packs and ladder pump. The generator system has been designed to run separately as well as in parallel. In order to keep the electrical and instrumentation power net clean, the power supply systems have been equipped with the appropriate filters and drive systems. The ladder pump is direct electric driven by e-motor and variable frequency drive. The "Lexington" has accommodation for 24 crew, including an office, a kitchen/mess room and sanitary facilities. In order to minimize noise levels, the accommodation has been furnished with anti-vibration shocks and is, as much as physically possible, disconnected from the engine room. On top of this, a spacious operating cabin ensures maximum view on deck and on the working environment. A U-shaped control desk with conveniently arranged controls and instrumentation provides an efficient working environment. For maximum dredging efficiency, state-of-the-art instrumentation and controls are installed, such as a dredge profile computer and positioning system. A VOSTA LMG automation system, including velocity & density management and system & dredging monitoring powered by Dredgepack- is installed. After the commissioning, dredge trials and hand over ceremony, the new Cutter Suction Dredge will start her first project for Cottrell Contracting Company. The Lexington will be used to accomplish a $4.7 million beach nourishment project for the Philadelphia District, United States Army Corps of Engineers. Approximately 200,000 cubic yards of sand will be dredged from an offshore borrow area and pumped on a badly eroded adjacent beachfront. Work is scheduled to begin approximately October 1, 2004. VOSTA LMG s office in the US, VOSTA Inc., played a vital role in managing the order. President Bernard Huelbert is happy that his office has been so helpful in supporting Cottrell Contracting Company in the building process: "The Cottrell deal shows the need for a local presence of VOSTA LMG in the US market, not only in securing the order, but also in supporting customers in the US in all stages of the project, with the specialized help from our colleagues in Europe for engineering and procurement". Specifications of the 'Lexington' are: Total installed power: 3.100 kW Length o.a.: 61,0 m Length pontoon: 48,8 m Breadth: 11,6 m Draught: 1,6 m Suction pipe: 1 x 457 mm Dredging depth: 18,3 m Bert Visser's Directory of Dredgers New cutter suction dredgers for Iran, June 2004 Vosta LMG has received a contract for the delivery of an engineering and components package for a CSD500S from a well-respected customer in Iran. This contract entails building a CSD500S, which will be self-propelled. The dredger will be built in Iran with the owner and is scheduled to be ready in 2005. The owner plans to use the dredger for deepening the basin and maintenance work in the area of Chabahar in Iran. Recently Vosta LMG delivered another CSD500S to Sadra Industrial and Marine Group. This project, which was won in 2002 by Vosta LMG has been executed with partner shipyard Iran Marine Industrial Group (Sadra). Vosta LMG has done the basic engineering and delivered the dredge systems like the electrical, hydraulic and diesel installation and components such as cutter, cutter ladder front part, spud carrier and dredge pump. Partner shipyard Sadra has assembled the dredger under supervision of the Vosta LMG project manager onsite. Furthermore Vosta LMG did the commissioning of the dredger and provided a crew training course. The CSD500S has been built at the Iran Marine Industrial Group (Sadra) shipyard in Neka, Iran for the Iranian customer PSO (Port and Shipping Organisation). The dredger received the name 'Shahid Rashidi' and has been handed over to PSO. The CSD500S is of a dismountable type, equipped with a Vosta SC10 cutting system has an onboard accommodation for 4 crewmembers and is designed to work in maintenance projects in the Caspian sea area. Main data of the 'Shahid Rashidi': Total installed power: 1.510 kW Length o.a.: 49,0 m Length b.p.: 37,0 m Breadth: 10,5 m Draught: 1,5 m Suction pipe: 1 x 550 mm Dredging depth: 14,0 m Bert Visser's Directory of Dredgers Trailing suction hopper dredger for Chinese Port Authority Huanghua Port launched On Tuesday 18 May 2004, the trailing suction hopper dredger 'Shen Hua' was launched at Hudong Zhonghua Shipyard in Shanghai, China. In a special launching ceremony, customer Huanghua Port witnessed the launch of the 5.000 m dredger. It is the biggest ever being built of this type in China. Huanghua Port belongs to the Shen Hua Group and is the main hub for worldwide transport of coal being excavated in the mines located in the northern part of China. To maintain the required depth of the port waterway entrance of Huanghua Port, continuous dredging work is required. Hence, it was decided by the Board of Management of Shen Hua Group to invest into their own trailing suction hopper dredger. VOSTA LMG delivers the complete engineering package and the dredging components for the 5.000m dredger. As repeatedly happened in the past, VOSTA LMG has also the complete technical responsibility for this vessel. At present the dredger is under construction at Hudong Zhonghua Shipyard in Shanghai. It is due to be handed over to Huanghua Port in the third quarter of 2004. Main data: Total installed power: 10.870 kW Hopper capacity: 5.000 m Length o.a.: 122,0 m Breadth: 22,0 m Draught: 6,9 m Speed: 14,3 kn Suction pipe: 900 mm Dredging depth: 26,0 m Bert Visser's Directory of Dredgers The 'Khaleej Bay', a heavy duty cutter suction dredger for Gulf Cobla Gulf Cobla (LLC), a company based in the UAE, has added a new medium size cutter suction dredger to its fleet of dredgers. The Damen Group delivered a knock down package for a powerful mono-hull cutter suction dredger to Gulf Cobla (LLC), especially designed to work in confined spaces. The dredger, type CZ600, was built at Abu Dhabi Shipbuilding and is the first professional Heavy Duty Cutter Suction Dredger built in the Middle East. The Damen package included the engineering of this one-off dredger and the supply of major components such as dredge pump diesels and gearbox, generators, spud carrier, spuds and spud hoisting system, winches and a very powerful cutter ladder, suited for a submerged dredge pump. The dredger, classed as Bureau Veritas I 3/3 for coastal service, will be performing capital and maintenance dredging in the entire Middle East. The dredger was designed in close cooperation with the owners, Gulf Cobla, who also supervised the building at the local yard. This particular vessel has been especially designed and constructed to withstand the harsh conditions in the Middle East. The soil conditions in the Middle East often require high energy input in order to break the existing ground in to smaller pieces prior to hydraulically transporting the material to a discharge location. The dredger, named "Khaleej Bay" - meaning "The Persian Gulf", in the local dialect - can work at a maximum depth of 18 m. There are relatively few such dredgers available in the region and it has been designed to be as narrow and as short as possible to enable it to work in confined spaces. Its length (over pontoon) is 50 m, its breadth 14 m and its draught 2.25 m. The dredger can also work in wide cuts using its long and heavy anchor booms, its 380 kN electrically driven side wire winches and its hydraulically driven spud carriage with 750 kN pushing force on 27 m long spuds. Also, the removed soil varies from silt up to hard material. The dredger is equipped with an easy spud tilting system, which makes the dredger more mobile. Powerful cutter unit As capital dredging on hard soil is amongst the working conditions it will face, a special powerful cutter unit is installed. The cutter unit, with a maximum available cutter power of 920 kW, is designed and supplied by Vosta LMG. The cutting system consists of a 5 and 6 bladed Vosta LMG cutter type SC/40, suitable for sand, clay and soft rock. The cutting performance can be optimised at dredging depths of between 3 and 18 m below the waterline, using the variable cutting power of nominal 450 kW to its maximum of 920 kW. The cutter unit is driven by two 500kW water-cooled electric motors through a gearbox. The heavy-duty cutter ladder has been designed for the harsh local conditions. Pumping system The dredger has a 600 mm suction pipe diameter. The 1.920 kW Caterpiller driven inboard dredge pump can be assisted by a submersible, electrically driven 550 kW dredge pump on the cutter ladder. The combination of both pumps makes the dredger capable of long distance pumping. For safety reasons, the pump room has been separated from the engine room by a watertight bulkhead. The optimum layout and use of watertight doors combines an easily accessible engine room with high stability and safety. Electrical system Two 1.500 kVA generator sets are installed for the cutter drive and the main winches, all frequency controlled, and for the auxiliaries and hydraulics. The generator system has been designed to run separately as well as in parallel. In order to keep the electrical and instrumentation power net clean, the power supply systems have been equipped with the appropriate filters and drive systems. Accommodation & control room The "Khaleej Bay" has day accommodation, including an office, a kitchen/mess room and sanitary facilities. On top of this, a spacious operating cabin ensures maximum view on deck and on the working environment. A U-shaped control desk with conveniently arranged controls and instrumentation provides an efficient working environment. The dredger has been specially designed for Gulf-region conditions; the accommodation, the control room and the operating room are fully air-conditioned. In order to minimise noise levels, the accommodation has been furnished with anti-vibration shocks and is, as much as physically possible, disconnected from the engine room. For maximum dredging efficiency, state-of-the-art instrumentation and controls are installed, such as a dredge profile computer and positioning system. Gulf Cobla LLC has played an active role in dredging activities in the Middle East for a period of 40 years, the U.A.E. being the focal point of their activities in the 80 s and 90 s. Over the years Gulf Cobla has undertaken and successfully completed several projects in almost all of the GCC-countries. Client satisfaction, safety, and integrity are keywords in the operations of Gulf Cobla. By consistently demonstrating these characteristics, Gulf Cobla has, over the years, acquired a long list of satisfied customers, both as sub-contractor and main contractor. Gulf Cobla operates a small fleet of cutter suction dredgers, floating auxiliary equipment and work boats, mainly focusing on small to medium size dredging projects in the Middle East. This new dredger will help the company to expand their operational range and improve availability, reliability and stability of their dredging operations. The Damen Group has a long history of building vessels abroad. The combination of the competencies of Damen Dredging, and those of Damen Technical Cooperation with the local yard, leads to top-of-the-range, high-performance vessels built to the high Damen quality standard, and suitable for a long productive life. Following the handover process, the new Cutter Suction Dredger sailed to Fujairah to execute dredging works at the Fujairah Naval Port Project. Bert Visser's Directory of Dredgers Offshore gas pipeline between Indonesia and Singapore completed in 2003 In July 2003, the construction of a 26 km long submarine gas pipeline between South Sumatra (Indonesia) and Singapore was completed by a joint venture of Boskalis Offshore and Jan de Nul. The construction of this pipeline was part of a major project to transport natural gas from gas fields in South Sumatra to Singapore in order to meet with its future energy demand. Beach pull at Pulau Pemping The route of the pipeline consists of two sections divided over two contracts with different clients: - a section of 9 on behalf of PowerGas (Singapore) - a section of 17 km on behalf of the Indonesian gas company Perusahaan Gas Negara (PGN) The scope of the project included extensive route preparations, route survey, dredging, and elimination of unacceptable free spans and rock protection of the 28 inch pipeline. The route of the 26 km pipeline runs from the small Indonesian island Pulau Pemping to the PowerGas receiving station on Singapore s island Pulau Sakra. The pipeline crosses the two busy shipping channels in the Singapore Straits, the Main Strait (westbound vessel traffic) and the Phillip Channel (eastbound), as well as the Sinki Fairway in the Port of Singapore. The 9 km PowerGas contract was the first to be signed in 2001 and consisted of four elements: - a 150 m onshore connection to the Pulau Sakra receiving station - the dredging of the pipe trench - pipe lay - pipeline protection with rock To dredge the pipe trench of this section, the following dredging equipment was deployed: - the large cutter suction dredger 'Marco Polo' with a total installed power of 16,200 kW (Jan de Nul) in combination with the 1,500 m split hopper barges Avon , WD Test and WD Itchen (Boskalis) - the 3,400 m split hopper dredger 'Pinta' (Jan de Nul) - the 23,400 m jumbo trailing suction hopper dredger 'Queen of The Netherlands' (Boskalis) The tshd 'Queen of the Netherlands' In total an amount 700,000 m of material was dredged under difficult conditions, with plenty of steep rocky outcrops, including sharp peaks, overlain with residual soils and layers of softer marine clay. Maintenance dredging of the trench was executed by the WD Fairway (Boskalis) and the Barent Zanen (Boskalis). When dredging for the depth requirement was completed, the remaining unacceptable free spans were eliminated by means of pre-laid rock supports by Side Stone Dumping Vessel Cetus (Boskalis). This phase of work was completed in December 2002. The preparatory work for the second contract (for PGN) began in July 2002 and dredging commenced in October 2002. Seabed work along the 17 km stretch differed from the PowerGas section of the route, in that the main task was seabed levelling rather than dredging for depth requirements. The route, however, featured areas of hard material requiring removal. Pre-lay supports were installed to eliminate remaining unacceptable free spans. This was an important phase of the work, where the optimum solutions for pipe laying within the agreed corridor had to be found. The stone-dumping vessel 'Cetus' The equipment used on this section included Jan de Nul s backhoe dredger Jerommeke and Boskalis grab dredger WH Goomai , equipped with an 11 m grab and operating in water depths of up to 50 m. The Zinkoon V (Boskalis) equipped with a hydraulic excavator, was deployed to dredge the shore approach through the shallow reef flats at Pulau Pemping All dredging and route preparation was completed in November 2002. The next phase, the placing of the pre-laid supports with the side stone-dumping vessel Cetus , was completed in December 2002. In February 2003 the subcontractor Global Industries started the pipe lay from Pulau Sakra. The main pipe lay (24 km), with tie-in to the remaining 2 km section landing at Pulau Pemping, was completed early March 2003. The fall pipe barge 'Zinkoon 6' In order to protect the pipeline from anchors of the largest crude carriers, more than two million tons of rock has been dumped along the pipeline in Singapore and Indonesia by the fall pipe barges Zinkoon 6 (Boskalis) and Zeepaard (Boskalis) as well as the side stone-dumping vessels Cetus (Boskalis) and Pompei (Jan De Nul). The protective rock layer is capable of withstanding the impact load of a 22-ton anchor. Most of the rock came from Karimun, an Indonesian island some 40 km west of the pipeline route. The rock dumping was carried out between March and July 2003. Bert Visser's Directory of Dredgers Trench Dredging and Backfilling for the 'Mumbai High Fields - Uran Trunkline Project' The 'Mumbai High Fields - Uran Trunkline Project' in India, that is carried out on behalf of the government owned Oil and Natural Gas Corporation (ONGC), is currently the biggest pipeline project in the Asia-Pacific region. Onshore excavation The project involves laying two subsea pipelines of 204 km in length each, one a 30 inch for oil and the other a 28 inch gas line, to replace the ageing trunk lines at the Mumbai High offshore field in the Arabian Sea. The existing pipeline system was laid in 1978 and after more than 25 years of successful operation has surpassed its design life. The system is used to transport crude oil and natural gas that is produced from various offshore platforms at the Mumbai High fields to the Uran Onshore Terminal. In 2004, Hyundai Heavy Industries Co. Ltd. (HHI) has been awarded the contract to carry out this $600 million project. Subsequently HHI has subcontracted the pre-trenching, backfilling and landfall works that are part of this project to Boskalis Westminster Middle East Ltd. The scope of work for Boskalis Westminster Middle East Ltd. consists of: - Dredging the trench (pre-trenching) from the landfall point (LFP) to the Port Limit which is 19.5 km offshore. - Dry excavation of the onshore / tidal section of the trench. - Dredging of a Lay-Barge Access Area. - Maintenance of the trench and Lay-Barge Access Area during the period in between the completion of the pre-trenching and the start of the laying of the first pipeline. - Backfilling of the trench from the landfall point to the Port Limit. - Backfilling of the trench in the onshore / tidal section with dry equipment. - Backfilling of the Lay-Barge Access Area. The backhoe dredger 'Colbart' Soil conditions in this area vary between very soft silty clay to weathered basalt. In the case of hard material a cover on top of the pipeline is required of 1 m and in the case of soft material a cover is required of 3 m. A trench has to be realized with a width of 8 m in the section near the shore and 10 m further offshore. In order to allow the Lay-Barge from HHI to approach the shore close enough to realize the beach-pull, an access channel had to be dredged from 1.6 km offshore to 3.0 km offshore with a width of 60 m and in which a water depth of 4 m below chart datum was guaranteed. For the dredging operations Boskalis has mobilized the backhoe dredger 'Colbart' from Abu Dhabi and the trailing suction hopper dredgers 'Flevo' and 'Seaway' respectively from Portugal and Singapore. The 'Colbart' was deployed to dredge the trench in the section close to the shore, where the water depth limited the activities of the hopper dredgers, and sections where hard material was encountered. To pre-handle sections with hard material, the 'Colbart' was fitted out with a S35 hydrohammer. The 2,130 m3 hopper dredger 'Flevo' was used to dredge in the shallow parts of the trench, while the larger 13,255 m3 'Seaway' operated in the offshore section. The period between November and May, the dry season, was selected to carry out these operations. From May till September the Monsoon dominates the weather and sea conditions in this region make maritime operations practically impossible. The hopper dredger 'Flevo' Operations started early November 2004 with two land-based excavators excavating the trench from the landfall point to approximately 200 m offshore. By the end of November the 'Colbart' started dredging and after having removed all the dredgeable material the bucket was replaced by the hydrohammer and for 2.5 weeks the 'Colbart' hammered the remaining material consisting of layers of hard basalt with a thickness of up to 1 m. Using hammer patterns based on previous experiences all the material was successfully broken after which all the remaining rocks could be dredged with the bucket. The 'Flevo' started dredging early January, in water as shallow as 4 m. In less than 3 weeks, approximately 300,000 m3 was dredged and deposited in a Temporary Storage Area at 1 km distance from the trench. Choice for the location was based on optimal cycle times and guaranteeing that no material would flow back into the dredged trench. Halfway January the 'Seaway' also started dredging and in 3.5 weeks removed approximately 1.5 million m3 from the offshore part of the trench. The material dredged by the 'Seaway' was also temporarily stored in an area at 1 km distance from the trench. The 'Colbart' seen from the 'Seaway' With the trench completed, HHI started the beach-pull with the Lay-Barge 'HD289' on 4 February 2005 and three weeks later the land-based equipment commenced the backfilling of the trench. Subsequently the 'Colbart' started backfilling the section of the trench near the shore. Currently (March 2005) the 'HD289' is still laying the pipeline and is expected to finish its operations within the Port Limits early April 2005. The 'Flevo' is expected to start backfilling operations shortly, while the 'Seaway' has to remain standby until most of the pipeline has been laid. The entire project is expected to be completed before the start of the monsoon season in May 2005. - Source: Royal Boskalis Westminster, 1 March 2005 - Bert Visser's Directory of Dredgers Links to Dredging and Maritime Construction Companies Argentina Pentamar SA Australia Neumann Contractors Belgium Baggerwerken Decloedt en Zoon Besix DEME Dredging, Environmental and Marine Engineering Dredging International Herbosch - Kiere Jan de Nul Group Scaldis Salvage and Marine Contracting Services Brazil Bandeirantes Dragagem e Constru o Ltda. Canada Fraser River Pile & Dredge Ltd. China China Harbour Engineering Company (Group) - CHEC CHEC / Guangzhou Dredging Company CHEC / Shanghai Dredging Company Longwon Port Dredging Group Danmark Danena A/S Peter Madsen Rederi A/S Rederiet Erik H j Rohde Nielsen Finland Terramare Oy Germany Heinrich Hirdes GmbH Johann Bunte Bauunternehmung GmbH & Co. KG Josef M bius Bau-Aktiengesellschaft Great-Britain Humber Work Boats Ltd. Pumpwise Dredging Ltd. UK Dredging Westminster Dredging Company Greece Archirodon Iceland Bjorgun EHF India Amma Lines Ltd. Dredging Corporation of India Ltd. (DCI) Jaisu Shipping Company Pvt. Ltd. Indonesia PT Rukindo - PT (Persero) Pengerukan Indonesia Latvia Ekohidrotechnika Ltd. (EHT) Malaysia Inai Kiara Malaysian Dredging Corporation SYS Marine Civil Engineering Contractor Mexico Dragamex Morocco Drapor The Netherlands Aannemingsbedrijf Geluk BV Baggerbedrijf de Boer / Dutch Dredging BMS Dredging D. Blankevoort International Dredging Company De Vries en van de Wiel Hakkers Werkendam Heuvelman Ibis Klaar Baggertechnieken BV L. Paans & Zonen Martens en Van Oord M sing BV Dredging & Civil Construction Royal Boskalis Westminster Tideway Van den Herik Sliedrecht Van der Kamp Van Oord Poland PRCiP Sp zoo Portugal Dragag s SGPS SA Saudi Arabia Huta-Sete Marine Works Ltd. Senegal Fougerolle Spain Marine Service Mediterranean SL Sociedad Espa ola de Dragados Sweden Boskalis Sweden AB Svensk Muddring AB Ukraine Cherazmorput / Black Sea & Sea of Azov Dredging Company United Arab Emirates Bin Suroor International Contracting LLC Gulf Cobla LLC National Marine Dredging Company, Abu Dhabi United States of America C.F. Bean LLC Dutra Group Faust Corporation General Construction Company Great Lakes Dredge & Dock Company Javeler Construction Co. Inc. Jay Cashman Inc. Manson Construction Company Nova Group Inc. Renda Marine Inc. Rowboat Dock & Dredge United Dredging Corporation Weeks Marine Inc. Yugoslavia Heroj Pinki Ivan Milutinovic - PIM Bert Visser's Directory of Dredgers Links to Sand and Gravel Companies Belgium CH. Kesteleyn NHM Granulates Danmark NCC Rastoffer Germany Mibau Stema Great-Britain Britannia Aggregates Ltd. CEMEX United Kingdom CEMEX UK Marine Ltd. Hanson PLC Llanelli Sand Dredging Ltd. United Marine Aggregates Ltd. (UMA) Netherlands De Hoop Terneuzen Mijnster Zand- en Grinthandel Spaansen SDH USA E.R. Jahna Industries Inc. Bert Visser's Directory of Dredgers Links to Governmental Authorities and Agencies International International Seabed Authority Belgium Administratie Waterwegen en Zeewezen Germany Bundesamt f r Seeschifffahrt und Hydrographie Dredging Strategies in Germany Kiel Canal / Nord-Ostsee Kanal Wasser- und Schiffartsverwaltung des Bundes Wasser- und Schiffartsamt Bremerhaven Hong Kong Marine Department of the Government of Hong Kong Mexico Secretar a de Marina - Armada de M xico Netherlands, the Gemeentewerken Rotterdam Rijkswaterstaat Zeetoegang IJmuiden Panama Panama Canal Authority South Africa National Ports Authority of South Africa United States of America New York - New Jersey Harbor Estuary Program United States Army Corps of Engineers United States Army Corps of Engineers, North Atlantic Division United States Army Corps of Engineers, New York District United States Army Corps of Engineers, Environmental Laboratory United States Army Corps of Engineers, Dredging Operations Techical Support Program United States Army Corps of Engineers, Research and Development Center US Environmental Protection Agency Bert Visser's Directory of Dredgers Links to Port Authorities and Port Services Argentina Puertos de Argentina Australia Brisbane - Port of Brisbane Corporation Burnie Port Corporation Pty. Ltd. Dampier Port Authority Geraldton Port Authority Mackay Port Authority Melbourne - Port of Melbourne Belgium Antwerp - Port of Antwerp Antwerp - Shipping & Signalling Services (S. & S.S.) Zeebrugge - Port of Zeebrugge Zeebrugge - Maatschappij van de Brugse Zeevaartinrichtingen (MBZ) Zeebrugge Electronic Data Interchange Services Brazil Santos - Porto de Santos Autoridade Portu ria China Huanghua Port Colombia Sociedad Portuaria Regional de Barranquilla - SPRB Denmark Esbjerg - Port of Esbjerg France Bordeaux - Port de Bordeaux French Atlantic Ports of Call Guadeloupe - Le Port Autonome de la Guadeloupe Le Havre - Port Autonome du Havre Nantes Saintes-Nazaire - Port Atlantique de Nantes Saint-Nazaire Georgia Poti - Port of Poti Great-Britain Associated British Ports (ABP) Forth Ports PLC Langstone Harbour Board Liverpool - The Port of Liverpool Tees & Hartlepool - PD Teesport Shoreham Port Tyne - Port of Tyne Authority India Calcutta Port Trust Indiaport Mumbai Port Trust Paradip Port Trust Tuticorin Port Trust Iran Ports and Shipping Organization of Iran (PSO) Malaysia Tanjung Pelepas - Port of Tanjung Pelepas (PTP) The Netherlands Amsterdam Port Authority / Gemeentelijk Havenbedrijf Amsterdam Rotterdam - Port of Rotterdam Rotterdam - Dirk Zwager's Shipinfo Zeeland Seaports - Terneuzen and Vlissingen New Zealand Lyttelton Port Company Ltd. Westport - Port of Westport Singapore Maritime and Port Authority of Singapore South Africa National Ports Authority of South Africa Spain Barcelona, Autoridad Portuaria de Barcelona Gij n, Autoridad Portuaria de Gij n Santander - Puerto de Santander Sri Lanka Sri Lanka Ports Authority Trinidad and Tobago The Port Authority of Trinidad & Tobago (PATT) Uruguay Administraci n Nacional de Puertos de Uruguay USA Jacksonville Port Authority New York and New Jersey - The Port Authority of New York and New Jersey Oakland - Port of Oakland International American Association of Port Authorities PortFocus, Ports Harbours Marinas Worldwide Bert Visser's Directory of Dredgers Links to Dredger Builders and Shipyards China China Shipbuilding Trading Co. Ltd. (CSTC) Guangzhou Wenchong Shipyard (GWS) Hudong-Zhonghua Shipbuilding (Group) Croatia Brodosplit Shipyard Finland Aquamec Watermaster France Alstom Marine Chantiers de l'Atlantique Germany Pressair International Corp. India Garden Reach Shipbuilders & Engineers Ltd. Magazon Dock Limited Japan IHI Ishikawajima-Harima Heavy Industries Co. Ltd. - Ship & Offshore Netherlands Bagema Barkmeijer Shipyards Broveco, manufacturer of Conver products Conoship International Damen Dredging Equipment Damen Shipyards Group IHC Holland Keppel Verolme Merwede Repair, Hardinxveld-Giessendam Merwede Shipyard, Hardinxveld-Giessendam Niehuis & Van den Berg Shiprepair Oranjewerf Scheepsreparatie, Amsterdam Reimerswaal Scheepswerf L.J. Boer Sliedrecht Scheepswerf Slob BV Shipyard De Donge Shipyard K. Damen Netherlands Antilles Cura ao Drydock Company Inc. (CDM) Poland Remontowa Russia Kamak South-Korea Hanjin Heavy Industries & Construction Co. Ltd. Spain IZAR United Arab Emirates Dubai Drydocks United States of America Dredging Supply Company, Inc. Bollinger Shipyards Inc. Ellicott International Twinkle Co Mitsubishi Heavy Industries Ltd. NQEA Australia Pty. Ltd, Australia Pan-United Marine & Engineering, Singapore Peters Schiffbau AG, Germany Sembawang Shipyard, Singapore Sermetal Estaleiros Ltda, Brasil Tandanor Shiprepair Yard, Argentina Volkswerft Stralsund GmbH Bert Visser's Directory of Dredgers Links to Dredging Service Companies Australia Alloy Steel Holaust Engineers and Suppliers to Marine and Environment Great-Britain Dredging Research Ltd. The Netherlands Alewijnse Holding Bagema Damen Dredging Equipment Geveke Motoren Herman Sr. BV Tug- and Workboat Company Hycos Hydraulics & Control Systems Hydronamic IHC Parts & Services IHC Systems IHC Systems Excavator Position Monitor - XPM Imtech Marine & Offshore Jan Kees Boer Transport BV Konutherm Machine Support BV Marasoft Multraship BV Svitzer Wijsmuller (Wijsmuller Bros. / Wijsmuller Maritime Recruitment BV) Snijder BV Heavy Earthmoving Equipment The Floating Hose Doctors Timro Technical Components & Services BV Trelleborg Velp BV Van de Grijp Pipes & Parts Vosta LMG Dredging Technology / Germany Vuyk Engineering Rotterdam BV Rederij Waterweg BV Wegusta Holland BV Singapore Asian Dredging Consultancy Semco Salvage & Marine Pte. Ltd. United States of America Anderson Dredging & Consulting Bay Engineering Inc. Cable Arm ESCO Corporation IMS Dredges Mobile Pulley & Machine Works Kongsberg Simrad, Norway Marine Consultants Inc. Rust & Corrosion Prevention Division Peter Nieman, Danmark Oxford Plastics Inc., Canada Silt Protector (Taiyo Kogyo Corporation) Svitzer Wijsmuller, Danmark / the Netherlands W rtsil Marine Bert Visser's Directory of Dredgers Links to Dredging and Maritime Projects Australia Port of Melbourne Channel Deepening Project Tweed River Entrance Sand Bypassing Project Belgium The Deurganckdok Scheldt Estuary Project Development Plan 2010 (ProSes) Finland Vuosaari Harbour Project France Le Havre Port 2000 Germany Container Terminal Bremerhaven CT4 Great-Britain Folkestone to Rye Coastal Defence Strategy Study India Sethusamudram Channel Project Japan Kansai International Airport Land Development Co. Netherlands Naviduct Enkhuizen Project Mainportontwikkeling Rotterdam (PMR) Scheldt Estuary Project Development Plan 2010 (ProSes) USA Hudson River PCBs Charleston Harbor Deepening and Widening Projects Bert Visser's Directory of Dredgers DEME Al Mahaar Alligator Antigoon Asterix Atlantico Due Big Boss Blani Brabo Charlemagne D'Artagnan DCI Dredge Aquarius ¹ Jade River Krankeloon Lange Wapper Nile River Orwell Pacifique Pallieter Pantagruele Pearl River River Bee Rubens Sambreiro Uilenspiegel Vlaanderen I Vlaanderen XI Vlaanderen XV Vlaanderen XVI Vlaanderen XVIII Vlaanderen XIX Vlaanderen XX Vlaanderen XXI Zenne ¹ Chartered from Dredging Corporation of India (DCI) Belgium Bert Visser's Directory of Dredgers Jan de Nul Alexander von Humboldt Amerigo Vespucci Capit n Nu ez 256-C Cristoforo Colombo De Bougainville DN 31 Filippo Brunelleschi Francesco di Giorgio Francis Beaufort Galilei 2000 Gerardus Mercator Il Principe J.F.J. de Nul James Cook James Ensor Jerommeke Juan Sebasti n de Elcano Leonardo da Vinci Manzanillo II Marco Polo Ni a Pinta Sanderus Taccola Vasco da Gama Vesalius Belgium Bert Visser's Directory of Dredgers Other dredgers of Belgium Agem One Ambiorix B1 Bayard De Neus SBBM 81 Sinjoor I Belgium Bert Visser's Directory of Dredgers Bandeirantes Dragagem e Constru o Ltda. Draga Brasil Draga Copacabana Draga Leblon Recreio dos Bandeirantes Brasil Bert Visser's Directory of Dredgers Dragaport Ltda. Boa Vista I Macap Brasil Bert Visser's Directory of Dredgers Enterpa Dragagem Ltda. Volzee Brasil Bert Visser's Directory of Dredgers Changjiang Waterway Bureau Hang Jun 8 Hang Jun 10 Hang Jun 11 Hang Jun 12 Hang Jun 15 Hang Jun 16 Hang Jun 17 Hang Jun 18 Hang Jun 21 Xi Yang 15 China Bert Visser's Directory of Dredgers CHEC / Guangzhou Dredging Company Chi Wan Fu Long Guangzhou Hao Jun Bo 5 Junzen Wan Qing Sha Yu Long China Bert Visser's Directory of Dredgers CHEC / Shanghai Dredging Corporation Hang Jun 1007 Hang Jun 4001 Hang Jun 4003 Hang Jun 4004 Hang Jun 4006 Hang Jun 4007 Hang Jun 4008 Hang Jun 4009 Hang Jun 4011 Hang Jun 5001 Hang Jun 9001 Hang Jun 9002 Hang Lian 702 Xin Hai Bao Xin Hai Jing Xin Hai Long Xin Hai Shi Xin Hai Xiang China Bert Visser's Directory of Dredgers CHEC / Tianjin Dredging Company Jin Hang Jun 216 Tong Li Tong Tan China Bert Visser's Directory of Dredgers Other dredgers of China Fu Min 9 Hao Gezhouba Jin Gang Jun Hu Min Jun II Shan Gang Jun 8 Shan Gang Jun 9 Shen Hua Wei Long Yue Dao Jun 1 China Bert Visser's Directory of Dredgers Danena A/S Baltic Botnia Rheia Skandia Danmark Bert Visser's Directory of Dredgers Peter Madsen Rederi Grete Fighter Margrethe Fighter Danmark Bert Visser's Directory of Dredgers Rohde Nielsen Ajax R Brage R Freja R Frigg R Gefion R Mj lner R Modi R Odin R Sif R Thor R Viking R Danmark Bert Visser's Directory of Dredgers Other dredgers of Danmark Aase H j Elisabeth H j Kristina H j Nordia - N Rijn H j Sirius H j Toste Veluwe H j Danmark Bert Visser's Directory of Dredgers GIE Dragages Ports Cap Croisette Cap d'Aunis Daniel Laval La Heve La Maqueline Pierre Lefort Ren Gibert Robert Peyronnet Ronceray Samuel de Champlain France Bert Visser's Directory of Dredgers Other dredgers of France Andre L Moniflor Commandant Mortenol Saint B n zet St. Germain France Bert Visser's Directory of Dredgers City of Hamburg, Amt Strom- und Hafenbau Donar Ekke Fafner Heimdall Odin Germany Bert Visser's Directory of Dredgers Johann Bunte GmbH & Co. KG F. Volker Sr. Pirat IX Germany Bert Visser's Directory of Dredgers Josef M bius Bau-Aktiengesellschaft Josef M bius Keto M 30 MP 26 Wilhelm Kr ger Germany Bert Visser's Directory of Dredgers Other dredgers of Germany Flevo Hansa Nordsee Ostsee Seekies Usedom Germany Bert Visser's Directory of Dredgers Hanson Aggregates Marine Arco Adur Arco Arun Arco Avon Arco Axe Arco Beck Arco Bourne Arco Dart Arco Dee Arco Dijk Arco Humber Arco Tyne Great-Britain Bert Visser's Directory of Dredgers Humber Work Boats Ltd. Abigail H John M Pat M Great-Britain Bert Visser's Directory of Dredgers PD Teesport Cleveland County Heortnesse Seal Sands Great-Britain Bert Visser's Directory of Dredgers RMC Marine Ltd. Sand Falcon Sand Fulmar Sand Harrier Sand Heron Sand Serin Sand Weaver Welsh Piper Great-Britain Bert Visser's Directory of Dredgers UK Dredging Ltd. Cherry Sand UKD Bluefin UKD Dolphin UKD Marlin Great-Britain Bert Visser's Directory of Dredgers United Marine Aggregates Ltd. City of Cardiff City of Chichester City of London City of Westminster Great-Brtain Bert Visser's Directory of Dredgers Other dredgers of Great-Britain Achus-1 Admiral Day Agem One Britannia Beaver Conquest Coquet Mouth David Church Donald Redford Hebble Sand Hedwin KB II Merger Mersey Mariner Mersey Venture Norleader Norstone Redcliffe Sand Samuel Armstrong Sand Swan Sand Wader Sospan Great-Britain Bert Visser's Directory of Dredgers Kolkota Port Trust Churni Grab Dredger No. 2 Mahaganga India Bert Visser's Directory of Dredgers Dredging Corporation of India (DCI) DCI Dredge V DCI Dredge VI DCI Dredge VII DCI Dredge VIII DCI Dredge IX DCI Dredge XI DCI Dredge XII DCI Dredge XIV DCI Dredge XV DCI Dredge XVI DCI Dredge XVII DCI Dredge Aquarius India Bert Visser's Directory of Dredgers Jaisu Shipping Company Kamal IX Kamal XXV Kamal XXVI Kamal XXVII India Bert Visser's Directory of Dredgers Other dredgers of India Cauvery Dharti 9 Nehru Shatabdi Sagar Durga Sindhuraj Vivek India Bert Visser's Directory of Dredgers Penta-Ocean Construction Co. Hoei No. 3 Suez No. 5 Suez Queen of Penta-Ocean Suruga Japan Bert Visser's Directory of Dredgers Toa Corporation Asia Maru No. 3 Kaishuu Toa Maru No. 3 Japan Bert Visser's Directory of Dredgers Other dredgers of Japan Fujin Hoei Maru No. 18 Kaisho Maru Kasumizaurusu Shin Hakusan Maru Seiryu Maru Sumiwaka Maru No. 38 Tenjin Maru No. 28 Japan Bert Visser's Directory of Dredgers Inai Kiara Inai Dahlia Inai Mawar Inai Melati Inai Melawis Inai Melor Inai Selasih Inai Siantan Kiara Temasek Malaysia Bert Visser's Directory of Dredgers Other dredgers of Malaysia Jetta 12 SYS 19 Tanjung Kemarong Malaysia Dragamex Beaver St. Lawrence Berbiceway Puebla Puerto de Altamira Yaqui Mexico Bert Visser's Directory of Dredgers Secretar a de Marina - Armada de M xico Chacagua Chairel Chamela Coyuca Kino Magdalena San Andres Tepoca Yavaros Mexico Bert Visser's Directory of Dredgers Baggerbedrijf de Boer / Dutch Dredging Aalscholver Adelaar Airset Albatros Amazone Arend Atlas Averano Grossglockner Lesse Mahury Obelix Oosterschelde Seine Westerschelde the Netherlands Bert Visser's Directory of Dredgers D. Blankevoort International Dredging Company Alpha_B Argonaut Coronaut Delta Queen the Netherlands Bert Visser's Directory of Dredgers Macon Charter Ave Ceasar Obscured by Clouds Pion Quetzalcoatl Rubicon the Netherlands Bert Visser's Directory of Dredgers M sing BV Dredging & Civil Construction Anton M sing Berend M sing Eems Ewald M sing Netti M sing the Netherlands Bert Visser's Directory of Dredgers Royal Boskalis Westminster Amstel Amsterdam Atlas Nova Atlantico Barent Zanen Beachway Beaver St. Lawrence Berbiceway Bonacavor Bonny Bremen Ceres Coastway Colbart Colima Cornelia Cornelis Zanen Cosmos I Cyrus Den Otter Donald Redford Donau Edax Elisa Eneias Europa Flevo Freeway Gemini Gema Gironde Guaymas Hansa Henares Holland I Hollandsch Diep Jacolien Jokra Kelani Ganga Kil Marcolien Meerval Mercurius Meridian Mosa Nautilus Noorderklip Nordland Olst Oranje Orion Pacifico Para Prins der Nederlanden Puebla Puerto de Altamira Pulteri Queen of the Netherlands Rosalien Saturnus Schreck Seaway Seine SMV10 Sospan Sospan Dau Strekker Taurus Tejo Ursa Vecht Virginia Volzee Waterway WD Dredgewell WD Fairway WD Medway II WD Severn Weesperkarspel WH Resolution Wouri Yaqui Zeeolifant Zuiderklip the Netherlands Bert Visser's Directory of Dredgers Van den Herik - Sliedrecht Asopos Karma 4 Prins 1 Westergoo the Netherlands Bert Visser's Directory of Dredgers Van der Kamp BV Hein IJsseldelta Pieter Hubert Rijndelta the Netherlands Bert Visser's Directory of Dredgers Van Oord Aegir Ajax Altena Amsterdam Antareja Buda II Castor Dinopotes Dravo Costa Blanca Eendracht Elisabeth Geopotes 14 Geopotes 15 Giessenmond Haarlem HAM 217 HAM 218 HAM 219 HAM 250 HAM 253 HAM 291 HAM 309 HAM 310 HAM 311 HAM 312 HAM 316 HAM 317 HAM 318 HAM 350 HAM 922 Hector Hercules Heron Iguazu IJzeren Hein Jetsed Kategats Labor Laurum Lelystad Magri Merwede Merwedijk Nj rd Noordzee Norham Camorim Ostsee Pelican Piet Ponton Rhino Razende Bol Rotterdam (TSHD) Rotterdam (SBUD) Sagar Hansa Sagar Manthan Schelde Sliedrecht 27 Sliedrecht 34 Sliedrecht 35 Stad Brugge Triton Viking Volvox Anglia Volvox Asia Volvox Atalanta Volvox Delta Volvox Hollandia Volvox Iberia Volvox Olympia Volvox Scaldia Volvox Terranova VOW 703 Waddenzee Westerschelde Zeeland Zeeland II the Netherlands Bert Visser's Directory of Dredgers Other dredgers of the Netherlands Albula Ameland Amphora Andre-B Argo 1 Banjaard Bergumermeer Biggelaar 15 Chrigon Christophorus Cornelis Delta Deo Gloria Dielis Hydra IJsselmeer Interballast I Interballast II Interballast III Jan Bernard Karab Lauwerszee Maas Mellina MNO Zeezand Orisant Reimerswaal Rio Saeftinge Scelveringhe Scheldeoord Schotsman Server 1 Server 2 Stephan Swalinge Vlieree Zeezand Express the Netherlands Bert Visser's Directory of Dredgers Karachi Port Trust Mahmud-ul Hasan Pakistan Bert Visser's Directory of Dredgers Dragag s SGPS SA Acrobata Albatroz Arganaz Pelicano Portugal Bert Visser's Directory of Dredgers Sociedade Portugesa de Dragagens Lda. Bellatrix Portugal Bert Visser's Directory of Dredgers Hyundai Engineering & Construction Co. Ltd. Goryo Ho Goryo 4 Ho Goryo 6 Ho South-Korea Bert Visser's Directory of Dredgers Samsung Engineering & Construction Co. Ltd. Samsung Apollo Samsung Greenpia South-Korea Bert Visser's Directory of Dredgers Yong Ho Yong Ho I Yong Ho II South-Korea Bert Visser's Directory of Dredgers Other dredgers of South-Korea DWPD-5 Hanjin Young Jong South-Korea Bert Visser's Directory of Dredgers Boskalis Sweden AB Gravlingen Rocky SMV10 Tor Viking Sweden Bert Visser's Directory of Dredgers Other Swedish dredgers SFYJ Big Bertha Sweden Bert Visser's Directory of Dredgers Cherazmorput / Black Sea & Sea of Azov Dredging Company Bagermeyster Grushin Bagrat Zakharyan Dnestrovskiy Liman Gogland Khersones Perekopskiy Ukraine Bert Visser's Directory of Dredgers Chernomortekhflot Dunay Kinburnsky Tsurupinsk Ukraine Bert Visser's Directory of Dredgers Gulf Cobla LLC Deira Bay Garhoud Bay Khaleej Bay Rashidiya Bay United Arab Emirates Bert Visser's Directory of Dredgers National Marine Dredging Company (NMDC) Abu Al Abyadh Al Mirfa Al Sadr Kattouf Mafraq Bay United Arab Emirates Bert Visser's Directory of Dredgers Other dredgers of United Arab Emirates Bin Suroor UCO 1 United Arab Emirates Bert Visser's Directory of Dredgers American Construction Company Mukilteo Palouse Patriot Snohomish USA Bert Visser's Directory of Dredgers B + B Dredging Company Atchafalaya Columbia USA Bert Visser's Directory of Dredgers C.F. Bean LLC Bean 2 Bean 6 Bean 10 Bonacavor Eagle 1 Maricavor Meridian Stuyvesant Tauracavor USA Bert Visser's Directory of Dredgers Great Lakes Dredge & Dock Company Alabama Alaska America Arizona California Carolina Dodge Island Dredge 50 Dredge 51 Dredge 52 Dredge 53 Dredge 54 Florida Georgia Illinois Liberty Island Long Island Manhattan Island New York Northerly Island Padre Island Pontchartrain Sugar Island Texas Utah USA Bert Visser's Directory of Dredgers Manson Construction Company Bayport Bob Lofgren Glenn Edwards Haakon HR Morris Newport Njord Valhala Vasa Viking Westport USA Bert Visser's Directory of Dredgers US Army Corps of Engineers Currituck Essayons Hurley McFarland Potter Wheeler Yaquina USA Bert Visser's Directory of Dredgers Weeks Marine Inc. B.E. Lindholm Beachbuilder R.N. Weeks R.S. Weeks Weeks 312 USA Bert Visser's Directory of Dredgers Other dredgers of the USA A.J. Fournier Atlantic Crystal Gayle DB Beaver DB Seattle DB Tacoma E. Stroud Galveston Lexington Michigan Millenium Nitro Ryan W Sandpiper (DuPont) Sandpiper (Matteson) Shiinecock Victoria Island White Rock Wisconsin USA Bert Visser's Directory of Dredgers General Ports Corp. & Marine Affairs Duyazan Yemen Bert Visser's Directory of Dredgers South-Korea Hyundai Engineering & Construction Co. Ltd. Samsung Engineering & Construction Co. Ltd. Yong Ho Other dredgers of South-Korea countries Bert Visser's Directory of Dredgers D'Artagnan specifications picture galleries Bert Visser's Directory of Dredgers Interballast III Name: Interballast III IMO number: 8113463 Type: Trailing suction hopper dredger Owner: Versloot Zandzuig- en Transportbedrijf BV Built by: Lucchese, Venezia Year: 1981 Total installed power: kW Hopper capacity: m 3 Length o.a.: 70,0 m Length b.p.: 65,3 m Breadth: 13,2 m Draught: m Suction pipes: mm Dredging depth: m History: - Built in 1981 under the name 'Achille' . - Renamed 'Achille Elle' in 1989. - Renamed 'Cor el Marina' in 1989. - Renamed 'Interballast III' in 1999. Related links: - Veristar (Bureau Veritas) More pictures: - The 'Interballast III' in Sluiskil (Gent - Terneuzen Canal). Bert Visser's Directory of Dredgers Pontos C-108 Name: Pontos C-108 Type: Cutter suction dredger Owner: Archirodon Construction (Overseas) Co. SA Built by: IHC Verschure Year: 1977 Total installed power: 7.758 kW Length o.a.: 84,0 m Breadth: 16,5 m Draught: 4,4 m Suction pipe: 1 x 800 mm Dredging depth: 20,0 m History: - Previously owned by Gulf Cobla. - Previous names: 'Al-Mariah', 'Pontos'. Bert Visser's Directory of Dredgers Al Mahaar Name: Al Mahaar IMO number: 8500850 Type: Cutter suction dredger Owner: DEME / Dredging International Built by: J. Boel & Zoon, Temse Year: 1986 Total installed power: 10.000 kW Length o.a.: 103,0 m Breadth: 19,1 m Draught: 4,6 m Suction pipe: 1 x 850 mm Dredging depth: 30,0 m History: - Previous name: 'Amazone'. Bert Visser's Directory of Dredgers Sagar Hansa Name: Sagar Hansa IMO number 7015444 Type: Trailing suction hopper dredger Owner: Van Oord Built by: IHC Smit, Kinderdijk Year: 1970 Total installed power: 8.000 kW Hopper capacity: 8.100 m 3 Length o.a.: 126,8 m Length b.p.: 116,9 m Breadth: 18,8 m Draught: 9,2 m Speed: 12,5 kn Suction pipes: 2 x 1.000 mm Dredging depth: 30,0 m History: - Built for Ackermans & Van Haren under the name 'Antwerpen V' in 1970. - Sold to the Federal Government of Germany and renamed 'Eberhard Steckhahn' in 1971. - Renamed 'Eberhard' in 1986. - Sold to Van Oord ACZ and renamed 'Volvox Hansa' in 1991. - Renamed 'Sagar Hansa' in 2005. Picture gallery Bert Visser's Directory of Dredgers Samsung Apollo Name: Samsung Apollo IMO number: 7600835 Type: Trailing suction hopper dredger Owner: Samsung Engineering & Construction Co. Ltd. Built by: Verolme Scheepswerf Heusden BV Year: 1977 Total installed power: 8.250 kW Hopper capacity coaming: 4.850 m 3 Hopper capacity overflow: 4.695 m 3 Loading capacity: 6.900 ton Length o.a.: 103,2 m Length b.p.: 95,0 m Breadth: 18,0 m Draught: 7,2 m Speed: 12,5 kn Suction pipes: 2 x 900 mm Dredging depth: 32,0 m History: - Built for Ballast Nedam Dredging under the name 'Apollo' in 1977. - Sold to Samsung Engineering & Construction Co. Ltd. and renamed 'Samsung Apollo' in 2000. Bert Visser's Directory of Dredgers Achus-1 Name: Achus-1 IMO number: 7340629 Type: Trailing suction hopper dredger Owner: Al Namal Group, Bahrain Operator: Marlboro Ship Management Built by: Appledore Shipbuilders, North Devon Year: 1974 Total installed power: 2.163 kW Hopper capacity: 1.309 m 3 Loading capacity: 2.100 ton Length o.a.: 81,9 m Length b.p.: 73,6 m Breadth: 14,0 m Draught: 5,0 m Speed: 12,0 kn Suction pipe: 1 x ... mm Dredging depth: 30,0 m History: - Originally built under the name 'Arco Severn' in 1974 - Renamed 'Achus-1' in 2004 Picture gallery Bert Visser's Directory of Dredgers Pelicano Name: Pelicano Type: Trailing suction hopper dredger Owner: Dragamais Built by: Appledore Shipbuilders, North Devon Year: 1974 Total installed power: 3.132 kW Hopper capacity: 1.927 m 3 Loading capacity: 3.450 ton Length o.a.: 98,5 m Breadth: 15,5 m Draught: 5,6 m Speed: 12,0 kn Suction pipe: 1 x ... mm Dredging depth: 30,0 m History: - Former name 'Arco Thames'. Bert Visser's Directory of Dredgers Volvox Anglia Name: Volvox Anglia IMO number: 8003838 Type: Trailing suction hopper dredger Owner: Van Oord Built by: Hermann S rken, Papenburg Year: 1980 Total installed power: 2.529 kW Hopper capacity: 1.202 m 3 Length o.a.: 66,6 m Length b.p.: 62,4 m Breadth: 12,0 m Draught: 3,6 m Speed: 8,0 kn Suction pipes: 2 x 450 mm Dredging depth: 18,0 m Remarks: - Split hopper dredger. History: - Originally built under the name 'Argo' in 1980. - Renamed 'Volvox Anglia' in 1989. Bert Visser's Directory of Dredgers R.N. Weeks Name: R.N. Weeks Type: Trailing suction hopper dredger Owner: Weeks Marine Inc. Built by: McDermott Shipyard, Amelia (Louisiana, USA) Year: 1987 Total installed power: kW Hopper capacity: 3.060 m³ Length o.a.: 89,6 m Breadth: 16,5 m Draught: 6,0 m Speed: 8,0 kn Suction pipes: 2 x ... mm Dredging depth: 21,0 m Remarks: - Split hopper dredger. History: - Previous name: 'Atlantic American'. Bert Visser's Directory of Dredgers Acrobata Name: Acrobata IMO number: 8138932 Type: Trailing suction hopper dredger Owner: Dragag s SGPS SA Built by: Est Sao Jacinto SarL, Aveiro (Portugal) Year: 1980 Total installed power: 2.047 kW Hopper capacity coaming: 829 m Hopper capacity overflow: 500 m Length o.a.: 55,0 m Length b.p.: 52,0 m Breadth: 12,4 m Draught: 4,5 m Speed: 10,0 kn Suction pipe: 1 x 500 mm Dredging depth: 18,0 m History: - Built under the name 'Atria' in 1980 - Renamed 'Fleetwood Bay' in 1989 - Sold to GIE Dragages Ports and renamed 'La Flandre' in 1990 - Sold to Dragag s SGPS SA and renamed 'Acrobata' in 2003 Bert Visser's Directory of Dredgers Interballast I Name: Interballast I IMO number: 7382457 Type: Trailing suction hopper dredger Owner: Versloot Zandzuig- en Transportbedrijf BV Built by: Brattvaag Skipsverft AS Year: 1975 Total installed power: kW Hopper capacity: m 3 Length o.a.: m Breadth: 13,0 m Draught: 6,9 m Speed: 12,0 kn Suction pipes: mm Dredging depth: m History: - Previous name: 'Baltic Kies I'. - Renamed 'Interballast I' in 2001. Bert Visser's Directory of Dredgers Ursa Name: Ursa IMO number: 8418875 Type: Cutter suction dredger Owner: Royal Boskalis Westminster NV Built by: Orenstein & Koppel / Krupp F rdertechnik GmbH, L beck Year: 1986 Total installed power: 16.000 kW Length o.a.: 105,4 m Length b.p.: 87,3 m Breadth: 20,0 m Draught: 5,5 m Speed: 13,5 kn Suction pipe: 1 x 950 mm Dredging depth: 25,0 m Remarks: - Self-propelled History: - Former name 'Bilberg I' Related links: - L becker Maschinenbau GmbH (LMG) - Royal Boskalis Westminster NV More pictures: - The 'Ursa' in Dubai, January 2003 Bert Visser's Directory of Dredgers Albatroz Name: Albatroz Type: Trailing suction hopper dredger Owner: Dragag s SGPS / Dragamais Built by: Ailsa, Troon Year: 1974 Total installed power: 3.430 kW Hopper capacity: 2.000 m 3 Loading capacity: 2.965 ton Length o.a.: 98,7 m Breadth: 17,7 m Draught: m Speed: 12,5 kn Suction pipe: 1 x ... mm Dredging depth: 27,0 m History: - Previous names 'Bowknight' and 'Sand Kite'. Picture gallery Bert Visser's Directory of Dredgers Utah Name: Utah Type: Cutter suction dredger Owner: Great Lakes Dredge & Dock Company Built by: IHC De Klop, Sliedrecht Year: Total installed power: 2.000 kW Length o.a.: m Breadth: 9,6 m Draught: 1,4 m Suction pipe: 1 x 600 mm Dredging depth: 16,0 m History: - Originally built for Sainrapt & Brice under the name 'Brisar'. Related links: - Great Lakes Dredge & Dock Company Bert Visser's Directory of Dredgers Arco Dijk Name: Arco Dijk Type: Trailing suction hopper dredger Owner: Hanson Aggregates Marine Limited Built by: IHC Holland, Kinderdijk Year: 1992 Total installed power: 4.000 kW Hopper capacity: 3.110 m Loading capacity: 8.800 ton Length o.a.: 113,2 m Length b.p.: 104,6 m Breadth: 19,6 m Draught: 7,7 m Speed: 13,3 kn Suction pipes: mm Dredging depth: m History: - Built as 'Camdijk' in 1992. - Renamed 'Arco Dijk' in 1997. Related links: - Hanson Marine Aggregates Ltd. Bert Visser's Directory of Dredgers Huta-Sete 2 Name: Huta-Sete 2 IMO number: 5293054 Type: Trailing suction hopper dredger Owner: Huta-Sete Marine Works Ltd. Built by: Ateliers & Chantiers de Nantes Year: 1962 Total installed power: kW Hopper capacity: m Length o.a.: 95,9 m Length b.p.: 89,3 m Breadth: 15,0 m Draught: 4,7 m Speed : m Suction pipes: mm Dredging depth: m History: - Originally built under the name 'Ren Siegfried' in 1962. - Renamed 'Cap Debundscha' in 1996. - Renamed 'Huta-Sete 2' in 2000. Bert Visser's Directory of Dredgers Chamela Name: Chamela Type: Cutter / trailing suction hopper dredger Owner: Secretaria de Marina - Armada de M xico Built by: IHC Holland, Sliedrecht Year: 1982 Total installed power: kW Hopper capacity: m³ Length o.a.: 75,7 m Breadth: 13,0 m Draught: 4,6 m Speed: 8,0 kn Suction pipe: mm Dredging depth: m History: - Built for the Secretaria de Comunicaciones y Transportes de M xico under the name 'Ciudad del Carmen' in 1992. - Transfered to the Secretaria de Marina - Armada de M xico and renamed 'Chamela' in 1994. Related links: - Secretaria de Marina - Armada de M xico Bert Visser's Directory of Dredgers UCO 1 Name: UCO 1 IMO number: 5075878 Type: Trailing suction hopper dredger Owner: UCO Marine Contracting W.L.L. Built by: Fleming & Ferguson, Glasgow Year: 1962 Total installed power: kW Hopper capacity: m 3 Length o.a.: 68,3 m Length b.p.: 64,6 m Breadth: 13,4 m Draught: 4,8 m Speed : 10,0 m Suction pipes: mm Dredging depth: m History: - Name until 1991: 'Clee Ness'. Related links: - Veristar (Bureau Veritas) Bert Visser's Directory of Dredgers Dravo Costa Blanca Name: Dravo Costa Blanca IMO number: 7430943 Type: Trailing suction hopper dredger Owner: DRAVOSA / Van Oord ACZ BV Built by: Verolme Scheepswerf, Heusden Year: 1975 Total installed power: kW Hopper capacity: 1.500 m Length o.a.: 72,9 m Length b.p.: 67,5 m Breadth: 13,0 m Draught: m Speed: 12,2 kn Suction pipe: 1 x 550 mm Dredging depth: 35,0 m History: - Built as 'WD Avon' in 1975 - Renamed 'CN Louisiana' in 1989 - Renamed 'Dravo Costa Blanca' in 1994 More pictures: - The 'Dravo Costa Blanca' dredging a trench for an outfall near Palavas-les-Flots (France), October 2003 Bert Visser's Directory of Dredgers Magdalena Name: Magdalena Type: Cutter suction dredger Owner: Secretaria de Marina - Armada de M xico Built by: Year: Total installed power: kW Length o.a.: 81,1 m Breadth: 12,3 m Draught: 5,6 m Suction pipe: mm Dredging depth: m Remarks: - Self-propelled. History: - Originally owned by Ackermans & van Haren (Belgium) under the name 'Colombo'. - Sold to Mexico and renamed 'Cristobal Colon' in 1969. - Renamed 'Magdalena' in 1994. Related links: - Secretaria de Marina - Armada de M xico Bert Visser's Directory of Dredgers Huta-Sete 7 Name: Huta-Sete 7 Type: Cutter suction dredger Owner: Huta-Sete Marine Works Ltd. Built by: Van Rees BV Year: 1979 Total installed power: 12.000 kW Length o.a.: 100,0 m Breadth: 18,0 m Draught: 3,8 m Suction pipe: 1 x 900 mm Dredging depth: 25,0 m History: - Previous names: Zeus C-104, Condreco 104, Premchai 104 Bert Visser's Directory of Dredgers Cosmos I Name: Cosmos I IMO number: 7917214 Type: Trailing suction hopper dredger Owner: Royal Boskalis Westminster NV Built by: IHC Holland, Kinderdijk Year: 1980 Total installed power: kW Hopper capacity: 5.391 m³ Loading capacity: 8.800 ton Length o.a.: 113,6 m Breadth: 20,0 m Draught: 8,4 m Speed: 14,0 kn Suction pipes: 2 x 800 mm Dredging depth: 32,0 m History: - Built for Cosmos Dredging VoF under the name 'Cosmos' in 1980. - Sold to Columbia and renamed 'Bocas de Ceniza' in 1987. - Out of service due to technical problems since 1999. - Sold to Royal Boskalis Westminster NV in 2001. - Renamed 'Cosmos I' in 2002. Bert Visser's Directory of Dredgers Sambreiro Name: Sambreiro Type: Cutter suction dredger Owner: DEME / Dredging International NV Built by: IHC Smit BV, Kinderdijk Year: 1998 Total installed power: 1.800 kW Length o.a.: 51,5 m Breadth: 9,3 m Draught: 1,6 m Suction pipe: 1 x 600 mm Dredging depth: 16,0 m History: - Previous name 'DC 202'. Bert Visser's Directory of Dredgers Vlaanderen XV Name: Vlaanderen XV Type: Cutter / sweep suction dredger Owner: DEME / Dredging International NV Built by: IHC Sliedrecht Year: 1984 Total installed power: 2.580 kW Length o.a.: 66,2 m Breadth: 11,9 m Draught: 2,1 m Suction pipe: 1 x 700 mm Dredging depth: 16,0 m Remarks: - Dredger is a IHC Beaver 3300 type. History: - Previous name: 'Dijle'. Bert Visser's Directory of Dredgers Inai Dahlia Name: Inai Dahlia Type: Cutter suction dredger Owner: Inai Kiara Built by: IHC Verschure Year: 1977 Total installed power: 8.277 kW Length o.a.: 84,0 m Breadth: 16,5 m Draught: 4,4 m Suction pipe: 1 x 800 mm Dredging depth: 20,0 m History: - Previously owned by Gulf Cobla under the name 'Zabeel Bay' and by Van Oord under the name 'Discovery Bay'. - Sold to Inai Kiara and renamed 'Inai Dahlia' in 2005. Related links: - Inai Kiara Picture gallery Bert Visser's Directory of Dredgers UKD Dolphin Name: UKD Dolphin Type: Trailing suction hopper dredger Owner: UK Dredging Ltd. Built by: IHC Holland, Sliedrecht Year: 1984 Total installed power: 2.000 kW Hopper capacity: 2.189 m³ Loading capacity: 3.420 ton Length o.a.: 79,0 m Breadth: 14,0 m Draught: 4,9 m Speed: 11,6 kn Suction pipe: 1 x 700 mm Dredging depth: 25,0 m History: - Built for D. Blankevoort & Zn. under the name 'Dolphin' in 1984. - Sold to Associated British Ports and renamed 'Humber Dolphin' in 1990. - Renamed 'Welsh Dolphin' in 1993. - Ownership transferred to UK Dredging Ltd. and renamed 'UKD Dolphin' in 1997. More pictures: - The 'UKD Dolphin' dredging in Port Talbot, South Wales, September 2003 Bert Visser's Directory of Dredgers Draga Copacabana Name: Draga Copacabana Type: Trailing suction hopper dredger Owner: Bandeirantes Dragagem e Constru o Ltda. Built by: Year: Total installed power: kW Hopper capacity: 5.000 m³ Length o.a.: m Breadth: m Draught: m Speed: kn Suction pipes: mm Dredging depth: 32,0 m History: - Previous name: 'Estado da Guanabara'. More pictures: - Pictures of the 'Draga Copacabana' provided by Marcelo Lopes. Bert Visser's Directory of Dredgers Eneias Name: Eneias Type: Cutter suction dredger Owner: Royal Boskalis Westminster Built by: De Groot Nijkerk Year: 1979 Total installed power: 1.030 kW Length o.a.: 32,0 m Breadth: 7,1 m Draught: m Suction pipe: 1 x 500 mm Dredging depth: 14,0 m History: - Previous name 'Feike D' Bert Visser's Directory of Dredgers Josef M bius Name: Josef M bius Type: Trailing suction hopper dredger Owner: Josef M bius Bau-Gesellschaft (GmbH & Co.) Built by: Dubigeon Normandie, Nantes Year: 1974 Total installed power: 5.400 kW Hopper capacity: 5.510 m 3 Loading capacity: 7.931 ton Length o.a.: m Length b.p.: 105,0 m Breadth: 19,0 m Draught: 8,0 m Speed: kn Suction pipes: 2 x ... mm Dredging depth: m History: - Built for GIE Dragages Ports in 1974 under the name 'Fran ois Leveque'. - Sold and renamed 'Kai Hong' in 1992. - Sold to Dragomar SpA and renamed 'Tina' in 1999. - Sold to Josef M bius Bau-Gesellschaft (GmbH & Co.) and renamed 'Josef M bius' in 2002. More information: - The renovation of the 'Josef M bius', 2002 More pictures: - The 'Josef M bius' at the shipyard of Peters Schiffbau AG in Wewelsfleth, December 2002 Bert Visser's Directory of Dredgers Colbart Name: Colbart Type: Backhoe dredger Owner: Royal Boskalis Westminster NV Built by: Soci t Industrielle des Forges de Strasbourg Year: 1986 Total installed power: kW Length o.a.: 50,0 m Length pontoon: 46,8 m Breadth: 15,0 m Draught: 2,3 m Bucket capacity: 3,7 / 5,6 / 13,0 m³ Dredging depth: 15,8 m Remarks: - Equipped with a Demag 255 S backhoe crane. History: - Built for GIE Dragages Ports under the name 'Gargantua' in 1986. - Sold to Royal Boskalis Westminster NV and renamed 'Colbart' in 1995. Bert Visser's Directory of Dredgers Yong Ho II Name: Yong Ho II Type: Trailing suction hopper dredger Owner: Yong Ho Built by: IHC Gusto, Schiedam Year: 1967 Total installed power: 8.000 kW Hopper capacity: 6.400 m³ Loading capacity: 10.000 ton Length o.a.: 132,0 m Length b.p.: 115,0 m Breadth: 21,1 m Draught: 8,0 m Speed: 12,0 kn Suction pipes: 2 x 900 mm Dredging depth: 37,0 m History: - Built for Volker Stevin under the name 'Geopotes IX' in 1967. - Sold to Yong Ho (South-Korea) and renamed 'Yong Ho II' in 2002. Bert Visser's Directory of Dredgers Inai Selasih Name: Inai Selasih IMO number: 7005231 Type: Trailing suction hopper dredger Owner: Inai Kiara Built by: Verolme Shipyard Heusden Year: 1970 Total installed power: 15.384 kW Hopper capacity: 9,075 m 3 Length o.a.: 140,0 m Length b.p.: 125,0 m Breadth: 22,7 m Draught: 11,4 m Speed: 15,0 kn Suction pipes: 2 x 1.200 mm Dredging depth: 50,0 m History: - Originally built under the name 'Geopotes X' in 1970. - Sold by Van Oord to Inai Kiara and renamed 'Inai Selasih' in 2004. Bert Visser's Directory of Dredgers Fraser Titan Name: Fraser Titan IMO number: 6913596 Type: Trailing suction hopper dredger Owner: Fraser River Pile & Dredge Ltd. Built by: Cammell Laird Shipbuiders Ltd. Year: 1969 Total installed power: 4.741 kW Hopper capacity: 3.420 m 3 Length o.a.: 95,0 m Length b.p.: 92,0 m Breadth: 16,0 m Draught: 5,3 m Speed: 10,0 kn Suction pipes: 2 x 800 mm Dredging depth: 23,4 m History: - Owned by Taylor Woodrow International Ltd. under the name 'Transmundum II' and chartered by Taybol Limited (a joint venture between Taylor Woodrow and R. Boltje & Zn.) from 1969 until 1974. - Sold to Volker Stevin and renamed 'Geopotes XII' in 1974. - Renamed 'Geopotes 12' in 1977. - Sold to Fraser River Pile & Dredge Ltd. and renamed 'Fraser Titan' in 1989. Related links: - Fraser River Pile & Dredge Ltd. Bert Visser's Directory of Dredgers KB II Name: KB II Type: Suction hopper dredger Owner: Kendall Brothers Portsmouth Ltd. Built by: Ferus Smit, Foxhol Year: 1960 Total installed power: 500 kW Hopper capacity: 400 m Length o.a.: m Breadth: m Draught: m Speed: kn Suction pipes: 1 x 450 mm Dredging depth: 18,0 m History: - Originally built under the name 'Glen Hafod' in 1960 - Renamed 'KB II' in 1985 Bert Visser's Directory of Dredgers Abigail H Name: Abigail H IMO number: 5133553 Type: Grab hopper dredger Owner: Humber Work Boats Built by: Year: 1958 Total installed power: kW Hopper capacity: 230 m 3 Length o.a.: 36,0 m Breadth: 8,5 m Draught: 3,3 m Speed: kn Dredging depth: m Remarks: - Equipped with a Priestman 350 dredging crane. History: - Previous name: 'Goole Bight'. Bert Visser's Directory of Dredgers Volvox Asia Name: Volvox Asia IMO number: 9174737 Type: Trailing suction hopper dredger Owner: Van Oord Built by: Krupp F rdertechnik / Hyundai Heavy Industries Year: 1999 Total installed power: 21.500 kW Hopper capacity: 10.000 m 3 Loading capacity: 17.500 ton Length o.a.: 132,5 m Length b.p.: 127,0 m Breadth: 26,0 m Draught: 9,0 m Speed: 15,0 kn Suction pipes: 2 x 1.100 mm Dredging depth normal: 35,0 m Dredging depth extended: 70,0 m History: - Built for Hyundai Engineering & Construction Co. under the name 'Goryo Ho No. 5' in 1999. - Sold to Van Oord ACZ and renamed 'Volvox Asia' in July 2002. Picture gallery Bert Visser's Directory of Dredgers Mahury Name: Mahury Type: Trailing suction hopper dredger Owner: Baggerbedrijf de Boer NV / Dutch Dredging NV Built by: Year: 1981 Total installed power: kW Hopper capacity: m Length o.a.: 65,5 m Breadth: m Draught: 3,0 m Speed: kn Suction pipe: 1 x 600 mm Dredging depth: 15,5 m History: - Previous name: 'Grand Charles' - Acquired by Baggerbedrijf de Boer NV / Dutch Dredging NV and renamed 'Mahury' in 2003 Bert Visser's Directory of Dredgers Tepoca Name: Tepoca Type: Trailing suction hopper dredger Owner: Secretaria de Marina - Armada de M xico Built by: Chantier de Normandie, Grand Quevilly Year: 1975 Total installed power: kW Hopper capacity: m³ Length o.a.: 110,2 m Breadth: 17,4 m Draught: 7,0 m Speed: kn Suction pipes: mm Dredging depth: m History: - Built for the Secretaria de Comunicaciones y Transportes de M xico under the name 'Guadalupe Victoria' in 1975. - Transfered to the Secretaria de Marina - Armada de M xico and renamed 'Tepoca' in 1994. Related links: - Secretaria de Marina - Armada de M xico Bert Visser's Directory of Dredgers Sirte 2 Name: Sirte 2 Type: Cutter suction dredger Owner: Built by: Year: Total installed power: kW Length a.o.: m Breadth: m Draught: m Suction pipe: 1 x ... mm Dredging depth: m Remarks: - Previous name: 'HAM 210' Bert Visser's Directory of Dredgers Hang Jun 8 Name: Hang Jun 8 IMO number: 7382031 Type: Trailing suction hopper dredger Owner: Changjiang Waterway Bureau (CWB) Built by: IHC Smit, Kinderdijk Year: 1975 Total installed power: kW Hopper capacity: 1.500 m 3 Length o.a.: 83,9 m Length b.p.: 78,0 m Breadth: 13,0 m Draught: m Speed: kn Suction pipe: mm Dredging depth: m History: - Previous name 'Hang Jun 1002' Picture gallery Bert Visser's Directory of Dredgers Ronceray Name: Ronceray IMO number: 8205383 Type: Trailing suction hopper dredger Owner: GIE Dragages Ports Operated by: Port Autonome de Rouen Built by: De Liesbosch Year: 1983 Total installed power: 2.471 kW Hopper capacity: 1.500 m³ Loading capacity: 1.876 ton Length o.a.: 79,5 m Length b.p.: 74,9 m Breadth: 14,3 m Draught: 4,4 m Speed: 11,5 kn Suction pipe: 1 x 527 mm Dredging depth: 16,0 m History: - Built under the name 'Liesbosch' in 1983. - Renamed 'Hardinxveld' in 1986. - Acquired by GIE Dragages Ports and renamed 'Ronceray' in 1995. - Widened from 11,9 to 14,3 m by Arno Dunkerque in 1995. More pictures: - The 'Ronceray' at work in the port of Rouen, 8 / 9 September 2003 Bert Visser's Directory of Dredgers Freja R Name: Freja R IMO number: 8105105 Type: Trailing suction hopper dredger Owner: Rohde Nielsen A/S Built by: Orenstein & Koppel, L beck Year: 1982 Total installed power: 2.500 kW Hopper capacity: 2.003 m Length o.a.: 75,1 m Length b.p.: 72,5 m Breadth: 14,0 m Draught: 4,8 m Speed: 9,5 kn Suction pipes: 2 x 600 mm Dredging depth: 23,0 m Remarks: - Split hopper dredger. History: - Built for Heinrich Hirdes GmbH under the name 'Heinrich Hirdes' in 1982. - Sold to Rohde Nielsen A/S and renamed 'Freja R' in 1998. Related links: - Rohde Nielsen A/S More pictures: - The 'Freja R' in Spain, 2002 Bert Visser's Directory of Dredgers Rigelstar Name: Rigelstar IMO number: 7009287 Type: Trailing suction hopper dredger Owner: Unknown Built by: IHC Gusto Year: 1970 Total installed power: 8.000 kW Hopper capacity: 6.000 m 3 Loading capacity: 10.000 ton Length o.a.: 122,9 m Breadth: 18,5 m Draught: 8,5 m Speed: 12,0 kn Suction pipes: 2 x 900 mm Dredging depth normal: 32,0 m Dredging depth extended: 40,0 m History: - Built for Zanen Verstoep under the name 'Hendrik Zanen' in 1970. - Sold to Compagnia Construzioni Generali and renamed 'Rigelstar' in 1986. - Sold to