March 18, 2009
Richardson Devine delivers Incat Crowther work boat
Built for Offshore Unlimited, the 24 m catamaran work boat Unlimited is the twentieth Incat Crowther design built by Australia's Richardson Devine Marine.
The platform is based on the proven Incat Crowther catamaran hull form with a highly efficient hull shape which leads to lower power requirements, lower fuel consumption and longer range capabilities. The hull has a wide beam, allowing easy engine room access for maintenance and repair, spacious crew quarters, high load carrying capability and providing excellent seakeeping characteristics.
During the vessel development stage Incat Crowther worked closely with the customer and the shipyard to customize the standard platform to suit the client's specific requirements. These included a multipurpose deck crane, incorporating a wireless control system for launching the vessel's tender, as well as general duties on the large open aft deck.
The aft deck includes a 1.2 m square moonpool for underwater operations and is fitted with securing points for a standard 20 ft container, while a stern platform provides water access.
An unusual feature for a lightweight aluminum high speed catamaran is the addition of a towing hook enabling the vessel to undertake lightweight tug duties, with a bollard pull of 15 tonnes.
The vessel has bow thrusters in both hulls for operating within close quarters of other vessels or structures.
The vessel maintains standard workboat characteristics including the main cabin facilities forward. The main deck houses two crew cabins, a galley, mess area, bathroom facility and lounge. The fitout standard is very high with the shipyard's high speed ferry expertise evident in the vessel's smart, modern finish.
The hulls house quarters for 10 crew with a large store room being located in the port hull.
The spacious wheelhouse on the upper deck gives all round visibility for the operational crew. Workspaces are also available for visiting engineers with all the latest communication outlets available.
Powered by twin Caterpillar C32’s each producing 1,400hp the vessel will have a service speed of 26 knots. Sea trials were conducted in very rough conditions in Australia’s Bass Strait. The trials proved that the vessel is a very robust and exceptionally sea kindly vessel.
The Unlimited has an extended range of 1875 nm at 22 knots thanks largely to two 12,500 liter fuel tanks. This will allow the operator the range to reposition the vessel far more efficiently than with multiple refueling.
Design Type: 24m Catamaran Work Boat
Survey: Marine and Safety Tasmania (USL 2A)
Construction material: Marine Grade Aluminum
LOA 24.00 m
LWL 21.80 m
BOA 8.00 m
Draft (approx) 2.25 m
Overnight: 12 Crew
Passenger Capacity: 38
Fuel capacity 2 x 12,500 liters
Fresh water capacity 1 x 1,500 liters
Deadweight 55 tonnes
Engines 2 x Caterpillar C32
Power 2 x 1,400 bhp at 2300 rpm
Gearboxes 2 x Twin Disc MGX6599
Propulsion system 2 x Fixed Pitch Propellers
Service Speed 26 knots
Max Speed 29 knots