Turkey's Sanmar Shipyard has recently completed one of the world's first gas fuelled tugs.
The first of two tugs for Norwegian customer Buksér og Berging, each vessel features two Rolls-Royce Bergen C26:33L6PG engines fuelled purely by liquefied natural gas (LNG).
The first boat, named 'Borgøy', will enter service next month following a series of sea trials. It will be operated by Norwegian state oil company Statoil at its Kårstø gas terminal.
The Rolls-Royce propulsion package includes the gas tank and supply system and two of the latest design US35 azimuth thrusters that ensure the tugs have rapid manoeuvring and positioning capabilities.