AX104 has distinctive X Bow

April 20, 2005

Wartsila power for Bourbon Offshore AX104

Wartsila Corporation has received a major contract from Norway's Ulstein Verft AS in Norway for a package of generating sets, thrusters, control system and seals for the innovative AX104 anchor-handling towing supply (AHTS) vessel ordered by Bourbon Offshore Norway AS, a subsidiary of the French marine service company Groupe Bourbon.

Due for delivery in May 2006, the new AHTS vessel has an inverted bow intended to eliminate slamming and allow higher speeds in all sea conditions.

The vessel will be one of the world's first AHTS vessels with diesel-electric propulsion.

Six Wartsila generating sets will provide a combined electrical output of 14,850 kWe.

Four of the generating sets are driven by six-cylinder Wartsila 32 engines and two by nine-cylinder Wartsila 20 engines. These will supply a propulsion and maneuvering system comprising two Lips CS3500/3500WN main steerable thrusters, a Lips CS250-250/MNR retractable bow steerable thruster and a Lips CT250M-D bow tunnel thruster.

The main steerable thrusters, each with a power of 5,000 kW, will have controllable-pitch (CP) propellers of 3.6 m diameter running in Lips HR nozzles.

The 1800 kW bow steerable thruster will be equipped with a 2.4 m-diameter CP propeller, while the 1200 kW bow tunnel thruster will have a 2.5 m-diameter CP propeller.

The four thrusters will be fitted with JMT MkII Unnet shaft seals.

The thrusters will all be controlled through a Lipstronic/T control system which provides both joystick control for manoeuvring and full dynamic positioning


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