Rolls-Royce, the global power systems company, has announced that Island Offshore will further expand its fleet of Rolls-Royce UT776 platform supply vessels (PSV) with more of the same type, with one major difference – the newly ordered vessels will use LNG for fuel. These vessels will be the first LNG powered UT vessels designed and powered by Rolls-Royce. The latest order by Island Offshore is for two PSVs . At present they have four of the UT 776 supply vessels in service and two more under construction.
The vessels will be built by STX Offshore Norway at its Brevik yard, which has previously built a number of vessels for the ship-owner.
“We are extremely happy with the performance of these UT vessels, as are our clients,” said Håvard Ulstein, Managing Director of Island Offshore in Ulsteinvik, Norway. “A very important area for Island Offshore is reduction in fuel consumption. With the UT 776, the favourable hull lines contribute to a very low consumption rate over a wide range of operating draughts. We believe that the most significant contribution to reducing emissions is to reduce fuel consumption for a given amount of work done. Going for LNG fuel is a logical step in reducing emissions even further.”
Rolls-Royce has worked for several years developing designs and systems for offshore vessels using LNG as fuel.
“Now that more gas infrastructure is in place, it is realistic for customers to select this fuel and these designs and systems” commented Atle Gaasø, General Manager Sales for Offshore service vessels. “We are very happy to be working with Island Offshore, as they are a very forward-thinking company with a strong focus on efficiency and the environment, as they have already shown with their pioneering Rolls-Royce designed well intervention vessels.”
“The UT 776 type has seen continued development from order to order, with our newest vessels building upon the experience and lessons learned from our earlier ones. By choosing this design we have managed to maintain high levels of standardisation, and continue the good cooperation on design and equipment we have with Rolls-Royce. The current design sets a standard that we think will do very well for the future,” added Håvard Ulstein.
Rolls-Royce has developed a gas-electric diesel-electric propulsion system for the new vessel. The effective capacity of the gas tanks is about 200m3, corresponding to 10-20 day operation on gas alone depending on the exact operational profile. The gas engines are two of the new C26:33 series from Rolls-Royce.
The new UT776 CDG is 96m long with a beam of 20m, and will transport all normal offshore supplies. The ship will also be equipped for oil recovery.