We perform Precision Alignment for Maritime Systems

End to End Alignment

On-site Alignment and Measurement Services

When precision is critical to a vessel’s propulsion and steering performance, MarineShaft delivers class-approved on-site shaft alignment and measurement services.

We ensure optimal alignment of shaft lines, rudder systems, and propulsion equipment - minimizing wear, optimizing performance, and reducing operational interruptions. Our mobile service teams are ready to assist worldwide, 24/7.

We bring the right equipment, knowledge, and documentation to every job. All work is conducted in accordance with classification society standards and includes comprehensive reporting and certification.

Laser alignement on stern tube shaft line

Global reach - Let's get to work

Our services include:

• Shaft alignment (main and intermediate)
• Alignment of diesel engines
• Alignment of gears and gearboxes
• Alignment of pumps
• Alignment of rudder systems, including steering gear
• Alignment of generators
• Flatness checks for crane foundations

Documented Quality

Jack-Up Test for Accurate Load Evaluation

MarineShaft performs jack-up tests to determine the actual bearing load on the shaft line. Using hydraulic jacks in combination with laser alignment tools, we measure vertical displacement and assess load distribution across the bearings.

This allows us to verify correct support and identify misalignments that could lead to uneven wear or vibration.

All findings are documented and can be included as part of our full alignment reporting package.

Accurate Measurements

We use 3D Scanning to Capture Detailed Data on Damage and Deformation

Our portable equipment allows us to perform high-precision measurements of propellers, rudders, shafts, and structural components. The scan data supports repair planning, reverse engineering, and dimensional control. Learn how 3D scanning can optimise your repair process and reduce downtime.

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Repair experts for your Shaft and Rudder line

Additional Services You Might Need:

in-situ machining services vessel repair

Case study: 3D scanning saves time

3D scanning used for virtual blue-fit testing of a new tail shaft cone for the propeller

M/V Arch Michael involved a project regarding the production of a new tail shaft. To ensure precise manufacturing, MarineShaft sent a technician to the vessel’s location abroad to perform a 3D scan of the fixed propeller cone.

The scan data can reveal if there are any geometrical deviations inside the propeller cone. MarineShaft uses the 3D scanning data to machine the cone of the new tail shaft to the exact final dimensions.

By utilizing 3D scanning data, MarineShaft can conduct a virtual blue-fit test, eliminating the need to bring the fixed propeller into the workshop. We can manufacture the new tail shaft with the correct dimensions ready for immediate installation.

Case study: Shaft installation and alignment

Shaft line Reinstallation, including Laser Alignment and Jack-Up Test

A stern tube bearing failure caused shaft line misalignment on an offshore supply vessel.

MarineShaft inspected the damage and was contracted to carry out the repair in our workshop, including the final installation and shaft alignment.

Our on-site work included:

On-site offset alignment: Our service engineers performed precise laser measurements of the existing stern tube bearing housings misalignment and these measurements were adapted to the final machining of the re-casted existing stern tube bearings.

Installation & alignment: We installed and aligned the repaired shaft line equipment, mounted the hydraulic coupling, and assembled the propeller, including a final jack-up test, witnessed by the class.