It is able to reduce CO2 emissions by up to 40%
Rolls-Royce has announced a second contract for a vessel to one of its Environship designs, in this case for a 75m LNG-powered vessel for Norwegian company Eidsvaag, to supply fish farms along the Norwegian coast.
The NVC 401 forage carrier is the latest design from the Environship range and incorporates a number of features to reduce environmental impact while increasing efficiency. According to Rolls-Royce, it will reduce CO2 emissions by up to 40% compared to similar diesel powered ships.
Rolls-Royce will supply all the main systems and equipment, as well as the ship design. The hull design features a wave piercing bow, while the scope of equipment supply includes a Bergen C26:33L9PG gas engine developing 2,430kW at 1,000rpm, driving a Promas propulsion system which combines a CP propeller and rudder. The reduction gearbox handles power take-off and take-in for the 1,100kW shaft generator in a variable speed HSG (hybrid shaft generator ) configuration linked to two 400kW auxiliary gensets. The high lift rudder is complemented by a 540kW tunnel bow thruster and a similar unit in the stern skeg.
Rolls-Royce will also supply a DP1 system with joystick, to hold the ship in position during offloading of fish feed pellets. This is said to be necessary to ensure that fish are fed in the right place at the correct times, regardless of weather conditions. Rolls-Royce will also supply the LNG system of about 110m capacity giving a range of around 1,750 nautical miles, the engine and thruster controls, an integrated automation system with gas control and monitoring and the power electrical system including HSG.
STX OSV in Brattvåg, Norway, will build the ship, with the hull sourced from the STX yard in Romania. On an overall length of 74.7m the NVC-401 LNG has a beam of 13.6m and a loaded draught of about 5m. The superstructure is located forward, with accommodation for eight people, and the machinery and LNG tank aft, the cargo tanks occupying the main part of the hull.
Rune Ekornesvåg, Rolls-Royce sales manager merchant vessels, said: “Our Environship design has been developed to meet very challenging operational requirements, including strict limits on emissions, which could only be achieved through our gas engine technology. Environships combine state-of-the art propulsion technology and advanced ship design to significantly reduce emissions of CO2.”
Rolls-Royce says this is the latest in a series of recent orders for its LNG powered ship designs, which includes the first gas powered tugs, coastal cargo ships and passenger ferries.
Source: Rolls-Royce
