Bow Thruster · Bow/Stern Thrusters
The Rolls‑Royce/Kongsberg TT Series is an electric tunnel bow thruster that provides high static thrust through a fixed or constant‑pitch propeller housed in a steel tunnel, enabling precise low‑speed manoeuvring.
Every value below comes from the manufacturer datasheet or class-society record on file for this model.
Other models of the same equipment type, Rolls-Royce / Kongsberg Maritime (UK/Norway) first.
What our service work and the manufacturer documentation say about keeping this model running.
Gear oil analysis every 1,000 hrs. Motor insulation test annually. Propeller inspection at drydock. CP hub overhaul every 20,000 hrs.
Kongsberg Maritime (ehem. Rolls-Royce Marine, acquired 2019). Service: Norway, Singapore, Houston, Shanghai. Lead time: 3-6 weeks.
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