Page 58: of Maritime Reporter Magazine (April 2017)

Oceanicasub V

A state-of-the-art DSV is a marvel of modern technology and design

VESSEL OF THE MONTH he DSV Oceanicasub V was delivered in February 2017 to her

Brazilian owner Oceânica. Oceânica provides subsea services to the petroleum company Petrobras. The Oceanicasub V is the second in a pair delivered from the Arpoador Shipyard in Gua- rujá, Brazil, and the 43 by 9.3-m vessel was designed by Incat

TCrowther in cooperation with the shipyard and owner.

Builders believe that allying shallow diving to a wide range ROV perfor- mance, all contained in a light DP 2 vessel, will establish a new benchmark in subsea operations, reducing costs, increasing work ? exibility and safety compared with the previous existing concepts.

For such a vessel, choice of engine power and propulsion method is of paramount importance. For reliable power the owners chose four Cummins

QSK19M main engines and coupled them to ZF 2000 gearboxes driving Ham- ilton HM521 water jets. With each of the four engines delivering 660 HP, the vessel, at just under 500 gt, has a maximum speed of 12,5 knots and a cruising speed of 10 knots. The jets eliminated the danger that propellers can present for divers.

However the primary function of the four jets, along with three 150 kW

Intermarine bow thrusters, is to provide precise and safe station keeping when divers are working below. The vessel is also ? tted with a Kongsberg DP2,

Hipap, Spot Track and Radius systems to automatically hold position as well.

Zero speed stabilizer ? ns are also installed to reduce roll and make the work- ing deck safer for crews.

Electrical power for the bow thrusters and a variety of deck cranes and winches is provided by three Cummins QSM11-powered 300 ekW gensets as well as a Cummins 6BT5.9-powered 92 ekW emergency genset. The vessel is also equipped with a hyperbaric chamber, Caviblaster, dive bell, one ROV for 1,500m and one for 300m, ROV A-frame and every conceivable piece of equipment required to handle a wide range of subsea tasks.

Accommodation is provided for 36 people including divers, dive support staff and ship’s crew. The wheelhouse has fore and aft controls with excellent visibility down to the working deck and up for those times that the boat is working near an offshore rig.

In the hull the main engines and jets are arranged in two pairs, port and starboard, with the three QSM11-powered gensets forward of the propulsion engines. Forward of the engine room an auxiliary machinery room contains, among other equipment, the main switchboard, ? ve compressors, the ROV power pack, and three water makers. Forward of that, six 4-person cabins, with a head in each cabin, share a companionway and stairs up to the main deck.

The main deck cabin includes a large galley and pantry forward on the star- board side with two dinning areas, one of which can double as a meeting room. Aft of the galley and mess area, a large TV room provides for relaxation to port with an of? ce and laundry room to starboard. Aft of the of? ce is a workshop and aft of the TV room is the dive operations of? ce with a separate computer room and access to the main deck.

Just aft of the main deck house are two A-frames, one for a dive bell and one for the ROV. Both can extend over the starboard side while on the port side is the hyperbaric chamber. An open work area aft supports port and starboard deck cranes.

Above the main deck house, and just below the wheelhouse, a mid-deck cabin contains two single berth cabins for the captain and a charterer’s repre- sentative. Two 4-person and one 2-person cabin, all with their own head, are also located on this deck.

The vessel is classi? ed by RINA C + Special Service, DYNAPOS AM/AT

R, DIVING SUPPORT, AUT-CCS, Unrestricted.

58 Maritime Reporter & Engineering News • APRIL 2017

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