Finnish technology group Wärtsilä is introducing a new portfolio of tug designs, to be known as the Wärtsilä HYTug series, with the emphasis on environmental sustainability.
Since they typically operate in or close to harbours and populated areas, tugs are particularly affected by environmental considerations, and the need for regulatory compliance is an increasing concern for tug owners and operators worldwide.
These latest designs have been developed with hybrid propulsion technology. The enhanced efficiency enables the total installed main engine power to be less than with conventional designs. Using less engine power also decreases exhaust emission levels and, therefore, the environmental impact. It also reduces the fuel bill and lessens the amount of engine maintenance needed, which again adds to the cost savings.
“We believe that new tugs will in future rely more and more on battery and hybrid propulsion, which very well complements today’s operational requirements,” Riku-Pekka Hägg, Vice President, Ship Design, Wärtsilä Marine Solutions, said.
The designs have been optimised for low hull resistance, high towing / escort performance, sea-keeping, crew safety and comfort, as well as for easy maintenance, the company informed.
The new tugs are designed with thrusters from the Wärtsilä WST series featuring large propeller diameters for efficient and high performance propulsion.