Seabed Constructor

Seabed Constructor is a multipurpose offshore vessel owned by Swire Seabed and contracted since December 2016 to British-owned hydrographic survey company Ocean Infinity, based in Houston, Texas, United States.^[1][2] Previously known as Olympic Athene and originally Olympic Boa, the ship was launched in 2013 and is flagged in Norway.^[3] The ship is designed to conduct geophysical and geotechnical surveys of the seabed, support the construction or demolition of underwater structures, conduct trenching and excavation operations, and serve as a ROV platform for the company's autonomous underwater vehicles and unmanned surface vehicles. The ship is 114 metres (374 ft) in length, with a 22 metres (72 ft) beam, a gross tonnage of 7,883, and deadweight tonnage of 6,480 metric tons. Its maximum speed is 14.1 knots (26.1 km/h; 16.2 mph).^[4]

History
Name	Olympic Athene Seabed Constructor
Owner	Olympic Ship Swire Seabed
Operator	Ocean Infinity
Port of registry	Bergen,  Norway
Builder	Kleven Verft AS
Launched	2013
Completed	2014
Identification	IMO number: 9682148
Status	Operational
General characteristics
Class and type	MT6022 MK II subsea support and construction vessel
Tonnage	7,883 GT 6,480 DWT
Length	115.4 m (379 ft)
Beam	22 m (72 ft)
Draught	7.135 m (23.41 ft)
Decks	7
Ice class	ICE-C
Installed power	5 x Caterpillar 2230 ekW
Propulsion	Electric
Speed	12.5 kn (23.2 km/h; 14.4 mph) service 16 kn (30 km/h; 18 mph) max

Seabed Constructor participated in the search for Malaysia Airlines Flight 370.^[5][6] It was operated by Ocean Infinity on a 90-day search contract for the missing aircraft; the mission ended unsuccessfully in mid-June 2018.^[7]

Seabed Constructor was then contracted by the Argentine Navy to search for the missing submarine ARA San Juan. On 17 November 2018, Seabed Constructor found San Juan a year and two days after the submarine's disappearance. The submarine lies on the seabed at a depth of 920 metres (3,020 ft) below sea level.^[8]

On 22 July 2019, the French government announced that drones launched from Seabed Constructor had found the French submarine Minerve, lost at sea in 1968.^[9]

On 4 December 2019, search teams from Seabed Constructor located the wreckage of SMS Scharnhorst, the flagship of the German Empire's East Asia Squadron during World War I, at a depth of 1,610 m (5,280 ft), some 98 nmi (181 km; 113 mi) southeast of the Falkland Islands.^[10]