WA pipelaying ship is a maritime vessel used in the construction of subsea infrastructure. It serves to connect oil production platforms with refineries on shore. To accomplish this goal a typical pipelaying vessel carries a heavy lift crane, used to install pumps and valves, and equipment to lay pipe between subsea structures.
WDCV Aegir is a Deep Water Construction Vessel owned by Heerema Marine Contractors and was christened during a festive ceremony in September 2013.
WDCV Balder is a deepwater construction vessel (DCV) operated by Heerema Marine Contractors.
WThe Castoro Sei is a column stabilized semi-submersible pipelay vessel. She has an overall length of 152 metres (499 ft), a width of 70.5 metres (231 ft) and an operating draught of 7.8 to 15.5 metres.
WPioneering Spirit is the world's largest vessel by gross tonnage. She was designed for the single-lift installation and removal of large oil and gas platforms and the installation of record-weight pipelines.
WRock dumping vessels are a category of watercraft that exist for the purpose of dumping rocks on the seabed. They are able to transport and dump rocks of variable sizes. The vessels range from large bulk-carrier style vessels, able to carry out precision operations using fallpipes, to smaller deck-loading vessels mainly used for erosion remediation.
WThe Saipem 7000 is the world's third largest semi-submersible crane vessel, after the SSCV Sleipnir and the SSCV Thialf. It is owned by the oil and gas industry contractor Saipem S.p.A.
WSkandi Neptune is an Offshore Construction Vessel that was operated by Subsea 7 from 2005 until the charter was ended in 2015.
WSolitaire is a large self propelled deep sea pipe laying ship. It was at the time of construction the world's largest pipe-laying ship at 300 metres (984 ft) long and 96,000 tonnes. When fully operational she has a crew of 420, a pipe carrying capacity of 22,000 tonnes and a pipe lay speed of more than 9 km a day.