Shaft Lines and Propulsion

Repair Services

• Shaft lines and stern tube assemblies.
• Propellers and propulsion units.
• Thrusters.
• Associated mechanical assemblies and shipboard systems.

Propulsion and steering system repair

• Repair of all types of steering gear.
• Repair of hydraulic steering drives.
• Repair of rudder stocks, tillers and steering drives.
• Repair of steering cylinders and pump units.
• Removal and installation of rudders.
• Inspection of rudder stock bearings and bushes.
• Repair of stern tube assemblies.
• Repair of propeller shafts, couplings and support bearings.
• Checking of shafting clearances.
• Alignment of shaft lines, bearings, gearboxes and main engines.
• Dismantling, reassembly and inspection for defects of controllable-pitch propellers.
• Repair of hubs, blades, shafts, bearings and pitch-change mechanisms.
• Dismantling, reassembly and repair of hydraulic pitch-control mechanisms.
• Dismantling, reassembly and repair of various types of thrusters and azimuth thrusters.
• Testing of steering gear and propulsion and steering systems after repair.

Integration with Docking Work

Inspection of underwater components, removal and subsequent machining can be included in the overall docking repair scope. Component lifting and handling arrangements are agreed with due consideration of their weight and geometry.

Shafts, Bearings and Seals

• Thrust, intermediate and propeller shafts.
• Thrust and support bearings, and shaft couplings.
• Stern tubes, bearings, brackets and seals.
• LIP-type stern tube seals.

Propellers and Steering Gear

• Repair, reconditioning and balancing of fixed-pitch and controllable-pitch propellers.
• Propeller hubs and blades, including those made from Cu1, Cu2, Cu3 and Cu4 alloys.
• Steering gear, rudders, nozzles, rudder stocks, tillers and bushes.

Stern Tube Seal Services

The scope of work, applicability of the procedure and personnel requirements are confirmed for the specific seal type and manufacturer's documentation.

• Servicing and supply of LIP-type stern tube seals.
• Bonding of split sealing rings using the applicable procedure.
• Technical support during propeller shaft withdrawal.