Wärtsilä unveils new AHTS design

The new design features bollard pull options of 180 tonnes, with options for 150 or 220 tonnes, and a hybrid propulsion system with a two-speed gearbox, which are fully compliant with ABS and the latest SOLAS regulations.

The 2-speed gearbox system was 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% in fuel consumption compared to conventional diesel mechanical four engine solutions. The exhaust emissions are reduced accordingly.

“Wärtsilä has an impressive track record and extensive experience in producing efficient AHTS designs, all of which are based on proven technology and the utilisation of high quality equipment. As a result, our ship designs consistently set new standards in terms of efficiency and environmental sustainability,” said Riku-Pekka Hägg, vice president, Wärtsilä Ship Design.

Wärtsilä says 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, and when changing propeller speeds, the arrangement produces no loss in PTO (Power Take Off) power.