Boa Sub C and Skandi Neptune in April 2010
History
Norway
Name	MSV Skandi Neptune
Owner	DOF Subsea
Operator	DOF Subsea
Port of registry	Bergen, Norway
Builder	Aker Tulcea SA, Tulcea, Romania Brattvaag Skipsverft AS, Norway[1]
Yard number	N243[2]
Launched	28 October 2000
Completed	November 2001[2]
Identification	IMO number: 9205720[3] MMSI number: 258142000[4] Callsign: LASG5
Status	in service
General characteristics
Class and type	+1A1, E0, DYNPOS AUTR, SF, DK+
Type	Offshore Construction Vessel
Tonnage	5,090 t DWT; 6,318 GT[5]
Length	104 m[4]
Beam	24 m
Draught	7 m
Installed power	2 × 1,530 kW (Wärtsilä 9L20), 2 × 3600 kW (Wärtsila 8L32)[6]
Propulsion	azimuth thrusters and tunnel bow thrusters
Speed	14.5 / 12.4 knots (max/ave)
Aviation facilities	Helideck

Skandi Neptune is an Offshore Construction Vessel that was operated by Subsea 7 from 2005 until the charter was ended in 2015.

The Skandi Neptune was built in 2001 as a cable layer. In 2005, she was converted to a multi-purpose offshore support vessel and began a long term charter to Subsea 7.^[7][8]

In 2010, Skandi Neptune provided ROV capability during the oil spill following an explosion on the Deepwater Horizon in the Gulf of Mexico.^[9]

Skandi Neptune has two stern azimuth thrusters, a retractable forward azimuth thruster and two bow tunnel thrusters. Combined with a class 2 DGPS system, these provide excellent manoeuvring capabilities.^[7]

She has accommodation for 106 persons in single and double cabins. The helideck is rated for Super Puma L2s.^[7]

The stern A-Frame is rated at 60 tonne SWL, the deck crane at 250 tonne SWL. The moon pool and 130 tonne traction winch allow the installation of flexible pipe.^[7]

Skandi Neptune can operate as a pipe-laying ship and provides ROV support.