Wärtsilä launches new AHTS vessel design
The focus of the new AHTS vessel 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 to 25% in fuel consumption compared with conventional diesel mechanical four engine solutions. The exhaust emissions are reduced accordingly.
The hybrid two-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 come with bollard pull options of 150, 180 or 220 tonnes, and a hybrid propulsion system with a two-speed gearbox. They are fully compliant with ABS and the latest SOLAS regulations.
