VESSEL REVIEW | Atlantic Endeavor – US-built crewboat to support Dominion Energy’s Virginia offshore wind farm

Photo: Atlantic Wind Transfers
Photo: Atlantic Wind Transfers

Rhode Island-based Atlantic Wind Transfers (AWT) recently welcomed the second crewboat to join its fleet. Named Atlantic Endeavor, the vessel has already begun operating in support of the Coastal Virginia Offshore Wind Farm (CVOW).

Built by Blount Boats also located in Rhode Island, Atlantic Endeavor was designed by UK naval architects Chartwell Marine.

The newbuild is a specialised variant of an existing Chartwell crewboat design. In addition to being capable of sailing under a broad range of sea conditions off the US Atlantic coast, it has been modified to comply with American environmental and US Coast Guard regulations as well as with legislation protecting the migration route of the protected Right Whale.

The 73.2- by 28.4-foot (22.3- by 8.65-metre), aluminium catamaran crewboat will provide operations and maintenance support for the 12MW CVOW, which is located 27 miles (43 kilometres) off Virginia Beach and owned jointly by Dominion Energy and Siemens Gamesa.

The vessel is manned by a crew of two to four and has the capacity to transport up to 24 technicians. Seating for the occupants is in the form of IMO HSC code-compliant reclining chairs in an interior that also boasts wi-fi connectivity and USB charging ports.

The hull is designed to minimise wet-deck slamming while offering a draught of just 4.42 feet (1.35 metres). The propulsion arrangement consists of two MAN V12-1400CR main engines that each produce 1,400 hp (1,043 kW) at 2,100 rpm, two ZF 3050 gearboxes, two HamitonJet HM651 waterjets, and a quartet of Humphree transom-mounted interceptors with computerised active ride control. This arrangement delivers a service speed of 22 to 26 knots and a sprint speed of 29 knots.

On the 645-square-foot (60-square-metre) foredeck, the vessel has an 11-ton (10-tonne) cargo capacity, cargo securing points, a Palfinger PK6500M knuckle boom crane, and a Nabrico anchor winch. The deck can accommodate up to two 10-foot (three-metre) containers.

Power for the onboard systems is supplied by two Cummins Onan 29kW generators.

The vessel is also equipped with a power washing and fuel transfer system. The designated walkways including the boarding gangway all feature handrails and safety sliding rails and are devoid of trip hazards.

AWT said that Atlantic Endeavor will have a secondary survey capability, which will also be put to use in support of offshore wind-related activities.

Atlantic Endeavor
Type of vessel:Crewboat
Classification:USCG SubChapter L
Owner:Atlantic Wind Transfers, USA
Operator:Atlantic Wind Transfers, USA
Designer:Chartwell Marine, UK
Builder:Blount Boats, USA
Hull construction material:Aluminium
Superstructure construction material:Aluminium
Deck construction material:Aluminium
Length overall:73.2 feet (22.3 metres)
Length waterline:62.7 feet (19.12 metres)
Beam:28.4 feet (8.65 metres)
Draught:4.42 feet (1.35 metres)
Displacement:68 tons (61.7 tonnes)
Capacity:11 tons (10 tonnes) of deck cargo
Main engines:2 x MAN V12-1400CR, each 1,400 hp (1,043 kW) at 2,100 rpm
Gearboxes:2 x ZF 3050
Propulsion:2 x HamiltonJet HM651 waterjets
Generators:2 x Cummins Onan, each 38 hp (29 kW)
Steering system:HamiltonJet AVX control system
Maximum speed:29 knots
Cruising speed:26 knots
Crane:Palfinger PK6500M
Other equipment installed:4 x Humphree interceptors
Seating:24 x IMO HSC code-compliant reclining chairs for technicians
Type of fuel:Diesel
Fuel capacity:3,200 gallons (12,113 litres)
Freshwater capacity:396 gallons (1,500 litres)
Sewage/blackwater capacity:132 gallons (500 litres)

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Baird Maritime / Work Boat World