First Rolls-Royce low emission Environship delivered

By Peter Pospiech at June 06, 2013 04:31
Filed Under: Company News, drive systems, Fuels & Lubes, General, LNG fuel

Rolls-Royce Plc has delivered the first of a revolutionary new design of cargo ship which will reduce CO2 emissions by up to 40 per cent, thanks to a combination of cutting edge marine technology, including a wave-piercing bow and an engine powered by natural gas, whereby the gas is stored as liquefied natural gas (LNG).

The first Rolls-Royce Environship, of NVC 401 LNG design, the Eidsvaag Pioner, has been delivered to Norwegian company Eidsvaag AS this week, and will soon enter service on a year-round schedule delivering feed to numerous fish farms around the Norwegian coast.

The Environship, which can be adapted for different ship types, incorporates a range of Rolls-Royce technologies to deliver efficiency savings for ship owners. When compared to similar sized diesel powered ships, the CO2 reduction can be up to 40 per cent.

Neil Gilliver, Rolls-Royce, President - Merchant, said: "The Environship has now moved from concept to reality with the successful delivery of the first ship. We firmly believe that the only way to make significant reductions in emissions and fuel costs is to combine a range of innovative technologies into one ship. Environship does just that, by bringing together complementary technologies as part of a highly efficient propulsion system.

Vidar Eidsvaag, Eidsvaag AS - Operations Manager said: "We look forward to entering service with this vessel, the very first of the Environship concept. We have great expectations of both the design and equipment, and we hope and think that this vessel will enable us to meet future challenges in an even better way.”

Rolls-Royce technologies, featured in Environship include a Bergen engine powered by natural gas, the Promas combined rudder and propeller, a hybrid shaft generator to optimise use of electrical power and an innovative wave-piercing hull design. On an overall length of 74.7 metres the NVC 401 LNG has a beam of 13.6 metres and a loaded draught of about 5 metres. 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.

A Bergen C26:33L9PG gas engine, developing 2,430kW at 1,000rpm turns a CP propeller in a Promas solution integrating the propeller, a nozzle and the rudder in an efficient propulsion system.

The LNG storage tank system supplied by Rolls-Royce has a capacity of about 110 cubic meters which gives a range of around 1750 nautical miles. Developed in cooperation with Linde Cryo, the result is a system that controls the supply of gas to the engine optimally despite rapid changes in load. Furthermore Rolls-Royce has delivered the engine and thruster controls, an integrated automation system with gas control and monitoring, the DP1 system with joystick, and the electrical system.

All together the propulsion solution will reduce CO2  emissions by 22 percent, NOx emissons by 92 percent and SOx emissions by 99 percent, while emission of particulates are negligible.

Built at the Vard Aukra yard in Norway and owned by Eidsvaag AS, the NVC 401 LNG forage carrier will work for Skretting AS. 

images: courtesy of Rolls Royce

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