Replacement of Thrusters
Key Benefits
Replace Thrusters Offshore Withour Removing the Vessel from Station
Our certified teams execute full changeouts of damaged or expired thrusters while the asset remains operational.
Compatible With All Major Thruster Types and OEM Interfaces
We support tunnel, retractable, and azimuth units using diver or ROV-assisted lift and install methods.
Class-Aligned Execution with Full Sealing and Mechanical Verification
Each replacement follows OEM guidance, surveyor expectations, and includes hull interface checks for long-term integrity.
Replacement of Thrusters
Service Description
SubseaPartner provides diver- and ROV-supported thruster replacement services for FPSOs and semi-submersibles. Whether driven by damage, mechanical failure, or scheduled changeout, our offshore installation method allows the unit to be removed and replaced in the field without drydocking.
Our teams manage the lift, separation, mechanical alignment, and sealing process with a focus on safe handling and long-term performance. All operations follow engineered lift plans and are carried out in coordination with onboard operations, class surveyors, and OEM service providers.
Read more
Thrusters are critical to dynamic positioning, redundancy, and safe station-keeping. When a thruster unit fails or reaches its service limit, SubseaPartner provides full in-water replacement using diver-led or ROV-supported methods. Our work covers:
What We Replace:
- Tunnel thrusters used for manoeuvring and redundancy
- Azimuth units for DP control and fine heading adjustments
- Retractable systems often fitted on semi-submersibles
Replacement Includes:
- Controlled removal of damaged or end-of-life units
- Subsea handling and lift to vessel or support barge
- Installation of OEM-specified thruster modules
- Alignment, flange sealing, and hull integrity verification
- Assistance with post-install testing and functional checks
When to Replace:
- Following failure identified during operations or inspection
- As part of SPS, class renewal, or life extension project
- In response to grounding or casing damage
- During scheduled OEM-driven upgrade or rotation campaigns
All campaigns are backed by engineered lift plans, diver-qualified rigging teams, and documentation packages required for class review.
Alternative: What to Expect
SubseaPartner delivers offshore thruster replacement with controlled lift, proper sealing, and full class-aligned documentation. All while the vessel remains in the field.
Operational Scenario
Real Results: Azimuth Thruster Replaced Without Drydock.
Challenge
One of three azimuth units requires an in service changeout on an FPSO.
Solution
SubseaPartner mobilizes a dive team and rigging crew to remove the thruster and install a new OEM-supplied unit. The operation is performed under an engineered lift plan, using strand jack guided positioning and sealing at the flange interface. All steps are documented for class verification.
Outcome
New thruster installed, hull integrity preserved, and DP capability restored. The vessel remains on location.
Let’s Secure Your Operations
Get in touch with SubseaPartner for offshore thruster replacement. Our certified teams deliver safe, class-compliant changeouts without drydock, ensuring reliable station-keeping for FPSOs and semi-submersibles.
