Trailing Suction Hopper Dredger

A Trailing Suction Hopper Dredger (TSHD) is mainly used for dredging loose and soft soils such as sand, gravel, silt or clay. One or two suction tubes, equipped with a drag head, are lowered on the seabed, and the drag head is trailed over the bottom. A pump system sucks up a mixture of sand or soil and water, and discharges it in the ‘hopper’ or hold of the vessel. Once fully loaded the vessel sails to the unloading site. The material can be deposited on the seabed through bottom doors, or reclaimed by using the ‘rainbowing’ technique. The material can also be discharged through a floating pipeline to shore, and used for reclaiming land.

Cristóbal Colón
Hopper capacity: 46,000 m³
Built in: 2009
Leiv Eiriksson
Hopper capacity: 46.000 m³
Built in: 2010
Vasco da Gama
Hopper capacity: 33.000 m³
Built in: 2000
Charles Darwin
Hopper capacity: 30,500 m³
Built in: 2011
Galileo Galilei
Hopper capacity: 18,000 m³
Built in: under construction - 2020
Gerardus Mercator
Hopper capacity: 18.000 m³
Built in: 1997
Juan Sebastián de Elcano
Hopper capacity: 16.500 m³
Built in: 2002
Pedro Álvares Cabral
Hopper capacity: 14.000 m³
Built in: 2012
Bartolomeu Dias
Hopper capacity: 14,000 m³
Built in: 2013
James Cook
Hopper capacity: 11.750 m³
Built in: 1992