Initial Enquiry:

For the upcoming cruise ship refit, a large operator required assistance with the overhaul of the four Wartsila Thrusters but wanted to investigate alternatives to OEM-supplied parts and field service.

Project Objectives:

• Provide parts and service expertise for the Wartsila Thrusters.
• Complete the overhaul of the four thrusters within the 12-day refit window.
• Overcome any unforeseen on-site issues and to the highest standards without delay to the ship’s departure date.

Project Description:

All four thrusters were removed from the ship and transported to a workshop for complete disassembly. The inspection and overhaul of all relevant parts were completed.

The work included:

• NDT of all vital components including gears, blades, blade carriers and hubs. Seals and bearings replacement.
• Bearings re-shimmed and re-set to factory specification
• Gear backlash was restored to factory limits.

As part of the overhaul, the primary seal assemblies were retrofitted by AEGIR-Marine to a twin lip seal design enabling off-the-shelf delivery of wearing components for future overhauls.

Due to the 20-year thruster age and consequent on-site emerging work, AEGIR-Marine also quickly supplied parts for unforeseen damage including new flexible input shaft couplings, hub sliding blocks and multiple small parts.

The team of AEGIR-Marine engineers worked day and night – completing the overhaul of the thrusters ahead of schedule, allowing some of them to return to their base earlier than planned.

Conclusion:

All four thrusters were overhauled in good time ahead of schedule.

Parts supply, and emergency on-site parts supply were achieved with no delays.

The on-site AEGIR-Marine engineers conducted the overhauls to a high quality and to the satisfaction of the operator and on-site Lloyd’s surveyors.

The Thrusters performed successfully through sea trials.

AEGIR-Marine has become the operator’s first independent supplier of Parts and Services for thrusters.

AEGIR-Marine provided the customer with a significant cost saving when compared to an OEM supply option.

To find out how we can help with your overhaul projects, please contact us.