Dredging is the excavation of material from a water environment. Possible reasons for dredging include improving existing water features; reshaping land and water features to alter drainage, navigability, and commercial use; constructing dams, dikes, and other controls for streams and shorelines; and recovering valuable mineral deposits or marine life having commercial value. In all but a few situations the excavation is undertaken by a specialist floating plant, known as a dredger.
Garden Reach Shipbuilders & Engineers Ltd, abbreviated as GRSE, is one of India's leading shipyards, located in Kolkata, West Bengal. It builds and repairs commercial and naval vessels. Presently GRSE has also started building export ships in a mission to expand its business.
Mercator Limited is an Indian company. It was earlier known as Mercator Lines Ltd. The Mercator group of companies has diversified business interests in Coal, Oil & Gas, Commodity Transportation, and Dredging. Mercator Limited is the parent company and is the second largest private sector shipping company in India, and it is based in Mumbai. It has recently forayed into the Offshore business with its subsidiaries Mercator Oil and Gas Ltd and Mercator Offshore Ltd.
Queen of the Netherlands is a Dutch Trailing suction hopper dredger ship constructed in 1998. After lengthening in 2009, she was the largest and most powerful dredger in the world. The vessel has been used in high-profile salvage and dredging operations including the investigation into the Swissair Flight 111 crash and in the Port Phillip Channel Deepening Project. It has been called "the world's largest floating vacuum cleaner".
Jan De Nul Group is a Belgian family-owned company, with the financial headquarters in Luxembourg, that provides services relating to the construction and maintenance of maritime infrastructure on an international basis. Its main focus is dredging, which accounts for 85% of its turnover. Other areas include civil engineering and environmental technology.
Dredging, Environmental and Marine Engineering NV (DEME) is an international group of specialised companies in the field of capital and maintenance dredging, land reclamation, port infrastructure development, offshore related services for the oil & gas industry, offshore windfarm installation, environmental remediation a.o. The group is based in Zwijndrecht, Belgium, and has current operations on the five continents. The roots of the group date back to the mid 19th century. DEME is committed to the practice of sustainable development. In 2009, the Flemish government agency Flanders Investment and Trade awarded the Export Lion 2009 to DEME for what was called its 'sustainable strategy of internationalization' and 'the many prestigious assignments carried out worldwide'. In a survey by temporary employment company Randstad Holding of 12,001 Belgians in early 2010 DEME was proclaimed one of the most attractive employers in Belgium.
A Slice of Reality is a work of modern art by Richard Wilson sitting by the Millennium Dome on the north-western bank of the Greenwich Peninsula. It consists of a 9-metre (30 ft) sliced vertical section through the former 800-ton 60-metre (200 ft) sand dredger Arco Trent and exposes portions of the former living quarters of the vessel to the elements.
A dredge drag head is used by a trailing suction hopper dredger to collect sand from the sea floor.
A trailing suction hopper dredger is a ship that has a full sailing capacity used to maintain navigable waterways, deepening the maritime canals that are threatened to become silted, to construct new land elsewhere or to replace sand eroded by storms or wave action on the beaches. This is made possible by large powerful pumps and engines able to suck sand, clay, silt and gravel.
The dredge valve is a component of a Cutter Suction Dredge or a Trailing Suction Hopper Dredger that is used control the flow of water and sand in the suction and discharge pipes of one of these types of dredgers.
Trailing Suction Hopper Dredger Congo River is the newest ship of the DEME fleet with the biggest hopper capacity: 30,190 m3. DEME N.V. signed a contract with IHC Dredgers B.V. for the design, construction, and delivery of the ship.
The TSHD WD Mersey is a British trailing suction hopper dredger, owned and operated by Boskalis Westminster Ltd and built in Italy. The ship maintained ports around the British Isles, including Liverpool, the Manchester Ship Canal, Harwich, Heysham and the Firth of Clyde
The TSHD Sospan Dau is a Dutch trailing suction hopper dredger owned by Sosban BV. The vessel has worked on dredging projects, including offshore aggregates, port maintenance, land reclamation, coastal defense and beach replenishment. The name Sospan Dau is Welsh and originates from Sosban Fach and Llanelli's tin plating industry, Sospan being the Welsh for Saucepan and Dau being Welsh for Two as the ship is a successor to the original Sospan.
Dredging Corporation of India Limited, or DCI, is unit engaged in the business of dredging. DCI does dredging for Indian seaports exclusively. It occasionally dredges at foreign seaports in countries such as Sri Lanka, Taiwan and Dubai. It is mainly involved in maintenance dredging. Almost all the maintenance dredging in Indian seaports is carried out by DCI due to government regulations. DCI is also involved in capital dredging, beach nourishment, and land reclamation. The main seaports in which DCI does business are Visakhapatnam Port, Haldia, Kandla, Cochin Port and Ennore Port.
M O P 223-C was a 2,588 GRT suction hopper dredger that was built in 1946 by William Simons & Co Ltd, Renfrew, United Kingdom as Empire Forager for the Ministry of War Transport (MoWT). She was sold in 1949 to the Argentinian Government and renamed M O P 229-C. She was renamed La Descanisada later that year and then renamed M O P 223-C in 1958, serving until she was scrapped in 1976.
USAVYaquina is a hopper dredge of the United States Army Corps of Engineers. Her primary mission is to maintain the entrance bars, rivers, and harbors along the coasts of California, Oregon, and Washington. She is assigned to the Portland District of the Army Corps of Engineers. Her homeport is Portland, Oregon. She was launched in 1980 and remains in service.
J. & K. Smit was a Dutch shipbuilding company located in Kinderdijk and Krimpen aan de Lek. Its successor is now part of Royal IHC.
Royal IHC or Koninklijke IHC, previously IHC Holland (1943–1995), IHC Holland Merwede (1995–2005) and IHC Merwede (2005–2014) is a Dutch shipbuilding company with headquarters in Kinderdijk. It focuses on the development, design and construction of ships for the dredging and offshore industries.
USAVEssayons is a hopper dredge of the United States Army Corps of Engineers. Her primary mission is to maintain the entrance bars, rivers, and harbors along the coasts of Alaska, Hawaii, California, Oregon, and Washington. In emergencies, she can also be deployed to the Mississippi River. She is assigned to the Portland District of the Army Corps of Engineers. Her homeport is Portland, Oregon. She was launched in 1982 and remains in service.
L. Smit en Zoon previously known as Fop Smit, was a Dutch shipbuilding company located in Kinderdijk. Its successor is now part of Royal IHC.
Cyprus 
