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Big MaKs Deliver Yell Power
01 Jun 2004
Shetland Islands Council is having a pair of double-ended ferries for open water service built at the Northern Shipyard in Gdansk, Poland. The 65m by 13.8m vessels will have the passenger car equivalent of 31 units, which could include four 18m by 2.6m trucks.
Some 95 passengers can be accommodated.
The two vessels will link the mainland of Shetland with the island of Yell, making the two mile crossing Yell Sound 42 times daily.
An Ulstein Aquamaster US155CRP azimuth thruster will be mounted at each end of the ferry.
Each unit will be shaft driven from a MaK 6 M20 engine. Each of the Rolls-Royce thrusters is designed to transmit 1,100kW at 1,000rpm input shaft speeds, which translates to a service speed for the craft of 13.7 knots. The contract represents a return by Shetland Islands Council to Rolls-Royce since two years ago Rolls-Royce provided a dieselelectric package including azimuth thrusters for the ferry Linga.
Commenting on the decision to choose MaK engines, Shetland Islands Council's engineer superintendent Gibbie Duthie said, 'We decided to go with the MaK 6 M20 because the engine has a low clutch speed and this is important for manoeuvring and start-up. In addition, the engine has a good sump capacity which is beneficial to its components and contributes to longer service intervals.'
MJ Information No: 195114
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