FastShip places gearbox order

Philadelphia Gear has landed its largest contract to date in the form of $35 million order for transmissions from FastShip. The company will supply 21 gearboxes, ,five per ship, plus one spare, to reduce the 3,600 rev/min output from the Rolls Royce gas turbines to the 200 rev/min required by the Kamewa waterjets.

Weighing 47t the single input/output co-axial transmissions will have a twin power paths and two-stage reduction. Each rated at 50MW the transmissions will measure 5.5m wide x 2.8m high x 4.5m long and be fitted with three pumps and a barring gear, but not a shaft generator.