Strategic Marine moves ahead with utility vessel deliveries

FEBRUARY 23, 2014 — Strategic Marine's Vung Tau, Viet Nam, shipyard has delivered four of ten Incat Crowther design infield utility vessels to Brunei's PTAS Marine and the rest are rapidly nearing completion, with some already on sea trials.

PTAS has been contracted by Brunei Shell Petroleum to build and operate nine vessels to support its offshore platforms for a period of ten years. Incat Crowther supported Strategic Marine in its technical proposal for the project, committing to a timeframe of just 15 months from contract signing to the delivery of the ninth vessel. The tenth boat will be retained by PTAS as a backup vessel throughout the contract period.

The vessels are classed  LR +100A1 SSC Workboat Monohull G3 +LMC.

The hulls are built from steel, while the superstructures are aluminum.

The design features a 100 sq. m aft working deck, capable of carry 10 t of cargo capacity. An aft platform is fitted for personnel transfers.

The main deck cabin seats 30 personnel, and can accommodate 100 survivors in the event that the vessel is called to respond to an emergency situation. A sick bay is also located on this deck, as are a galley, crew mess and food storage for the vessel's 12 crew.

The vessel meets stringent noise requirements, which include a maximum volume of 65bBa in all accommodation spaces and crew accommodations are located below decks, with a noise lock / service void separating them from the engine room.

Additional features include oil dispersant spray booms port and starboard and an aft-facing firefighting monitor.

The vessels have a service speed of 20 knots and a top speed of 21.5 knots with propulsion being provided by a pair of Cummins KTA38 outboard engines and a single Cummins KTA50 central main engine each driving fixed pitch propellers through Twin Disc gearboxes and the center engine also driving the firefighting monitor.

PRINCIPAL DIMENSIONS
Length Overall  42.0m
Length Waterline 40.5m
Beam Overall 8.0m
Draft (hull) 1.78m
Draft (prop) 2.45m
Depth 3.65m
Construction (hull)