AMS Spirit is a South Catamaran 15m Alloy Wind Farm Service Vessel and measures 15.6m length overall, 6.4m beam overall, has a draft of 1.0m and has a lightship displacement (including fluids) of 25 tons.
The vessel follows standard South Boats design principles with symmetrical under water sections and asymmetrical wet deck knuckles and spray deflectors. The design includes a high buoyancy bow and triple internal spray knuckles to maintain a suspension of air/water to dampen pitching moments particularly in heavy weather. In addition the hulls maintain a parallel waterline beam through the length of the vessel allowing for good weight distribution around the vessel. The design offers class leading sea keeping, stability, fuel efficiency and manoeuvrability. The sea keeping in particular has been proven in service operating in excess of 1.5m significant wave height.
The vessel features an ‘Island’ central superstructure with a 20 sq/m working deck forward and 20 sq/m working deck aft. Deck equipment includes a raised Palfinger PK4501M fully folding knuckle boom crane capable of lifting over 750kg’s at 5.3m, hydraulic capstan winch, hydraulic pressure washer and a 240V AC fuel transfer system. The vessel also has a stability book to enable up to 5 tons of cargo to be carried on the forward and after decks, which is unique on a vessel of this size and type.
The vessel is powered by twin Scania DI12 69M 625mhp diesel engines driving two ZF360A 1.50:1 reduction ratio gearboxes coupled to Ultra Dynamics 452 water jet units.
The vessel is certified to operate under the MCA Workboat Code, up to 60nm offshore for up to 12 passengers, three crew and 5,000kg of deck cargo.