Tunnel Thruster · Bow/Stern Thrusters
The Hydromaster HM‑TT‑500 is a bow‑mounted tunnel thruster delivering up to 60 kN of thrust from a 500 kW motor through a 900 mm diameter tunnel, intended to improve low‑speed maneuverability and assist in docking.
What our service work and the manufacturer documentation say about keeping this model running.
Inspect propeller and tunnel or retractable housing when accessible, seals, gearbox or bearings, lubrication, motor or hydraulic drive and control feedback. Review vibration, oil condition, temperature and thrust response. Test bridge and local control under an approved manoeuvring procedure. Refer to the manufacturer documentation for the exact figure for lubrication, clearance, electrical and wear limits.
Carry seals, filters, approved lubricant, motor-control or drive spares, feedback sensors and critical hydraulic, steering or electrical components.
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