Wärtsilä launches new AHTS vessel design at Sea Asia exhibitionVessel & ROV News // April 21, 2015
A new AHTS vessel design is being launched by Wärtsilä at this year's Sea Asia exhibition, which is being held in Singapore from April 21 to 23. The focus of the new design is on simplicity, efficiency, low fuel consumption, and a reduced environmental impact.
The equipment solutions are suitable for medium to large size AHTS vessels, where one of the key components is a two-speed gearbox system selected to meet the design targets of reduced costs and less complexity without compromising operational safety.
Wärtsilä estimates that the new design provides a reduction of 20-25 per cent in fuel consumption compared to conventional diesel mechanical four engine solutions. The exhaust emissions are reduced accordingly.
The hybrid 2-speed gearbox PTI (Power Take In) solution ensures a seamless transfer from one operational mode to another, with the ability to work efficiently in all operational modes.
When changing propeller speeds, the arrangement produces no loss in PTO (Power Take Off) power. Crew requirements need not change to operate vessels featuring the new Wärtsilä design as no special electrical skills are necessary.
The new Wärtsilä series of AHTS designs features bollard pull options of 180 tonnes, with options for 150 or 220 tonnes, and a hybrid propulsion system with a 2-speed gearbox. They are fully compliant with ABS and the latest SOLAS regulations.