The powerplant was turbo - electric transmission , with four boilers supplying steam to two turbo - alternators that drove the twin main propellers , gave a top speed of and the ship also had stern and bow thruster propellers to propel her sideways for easier berthing .
The powerplant was turbo - electric transmission , with four boilers supplying steam to two turbo - alternators that drove her twin main propellers , gave a top speed of . 
 She had stern and bow thruster propellers to propel her sideways for easier berthing .