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New South Wales-based design firm Incat Crowther has
announced a contract to design a 56 metre catamaran dive
support vessel (DSV) for Western Australia-based marine
solutions provider Bhagwan Marine, to be operated by dive
specialists Neptune Marine Services of Perth.
Headquartered in Sydney, Incat Crowther has worked in
collaboration with Bhagwan Marine and Neptune Marine
Services to develop a first of type, fully integrated catamaran
DSV. The vessel has been designed from the keel up to perform
six key roles; dive support, geophysical survey, geotechnical
survey, cargo transport, hyperbaric rescue and safety standby.
According to Incat Crowther, "with such a varied array of
operational roles, unique solutions were required not only in the
allocation of spaces, but also with the specification of a flexible,
high-redundancy propulsion system."
The resulting vessel will feature a highly advanced propulsion
and powering package that will integrate a pair of Schottel STP
550 azimuthing drives.
The Schottel drives combine with a pair of drop-down
azimuthing bow thrusters and a Kongsberg control system to give
the vessel DPS-2 manoeuvrability. The innovative system lends
itself to the shallow draught dive operations the vessel will
specialise in, as the forward azimuthing thrusters are able to
maintain operation as tunnel thrusters when retracted. Further
positioning capability is provided by a HIPAP 501 acoustic
positioning system, which allows the vessel to maintain station
relative to undersea reference points.
The craft will also be fitted with four generator sets made up
of two Cummins QSK38-Ms and two QSK19-Ms. An advanced
power management system will make optimal use of the four
generators and a battery bank to ensure each power source is
used in the most effective way.
The battery bank, supplied by global lithium energy firm
Corvus Energy, will store enough power to propel the ship for
short periods, and the vessel will have a top speed of 13.5 knots.
The QSK-38-M generator sets are also directly coupled to fire
pumps, which drive full immersion fire monitors whilst a
separate pump will power a complete deluge system.
Additionally, the vessel will be fitted with a 100 tonne
four-point mooring system featuring four deck winches and
diagonally-oriented fairleads on all four corners of the vessel.
Further separating the vessel from others of its size and type,
the craft will have all dive equipment designed and built in from
the outset. A dedicated dive control room will be fitted with a
pair of recompression chambers, with a hull compartment
directly below dedicated to support equipment such as
compressors and dive gas storage tanks.
A pair of diver launch and recovery systems is to be fitted to
starboard side, whilst a separate launch and recovery system is to
be fitted to port for ROV operations. The vessel will also have the
capacity to launch, retrieve and store a hyperbaric lifeboat.
The aft main deck's 160m2 of cargo space will be
supplemented by a multitude of purpose-fitted
deck equipment, including launch and recovery systems,
tow pins, waterfall winches, stern roller, A-Frame and
container securing lugs.
Accommodation cabins for a complement of 44 will be
situated in the hull and the mid deck. The mid-deck features an
aft-facing survey room, which is linked to the wheelhouse by
wireways, allowing operational flexibility.
The main deck of the vessel will house service spaces
including an ROV control room and three workshops; as well as
crew spaces such as a change room, cinema, dining mess and
lounges and a commercial standard galley adjacent to dry and
cold food storage spaces.
"Offshore vessels such as the 56 metre catamaran DSV are fine
examples of our ability to evolve new technologies," concluded
the design firm. "Incat Crowther's flexibility and expertise gives
it the ability to develop a vessel balancing the requirements of a
fuel efficient boat that is able to be repositioned quickly with the
requirements of manoeuvrability and stability in shallow water
Incat Crowther announces dive support catamaran for Bhagwan Marine
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