The Permanent magnet tunnel thruster (TT-PM) is the latest tunnel thruster design from Rolls-Royce and has been engineered with reliability and through life costs as the focus.
Using permanent magnet motor technology increases efficiency and makes the installation more compact, only the variable frequency drive unit is housed in the thruster room, freeing up space on board.
It also simplifies maintenance as the patented mount means units can be removed and replaced without drydocking. PM thrusters are currently available in two sizes with powers of 1,000 and 1,600 kW. These thrusters have been developed for the most demanding applications such as DP.
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