MarineShaft bring their welding expertise directly to your vessel

Class-approved welding procedures

On-site Repair Services for All Propeller Types

We offer full-service, on-site repair solutions for all types of propeller blades. Fixed propellers and Controllable Pitch Propellers (CPP) – in stainless steel and bronze. Whether your vessel is afloat or in drydock, our mobile teams deliver fast, efficient service designed to reduce downtime and restore full functionality.

Our highly skilled and certified welders ensure all welding work meets the strict standards of leading classification societies. With advanced portable equipment and a flexible setup, we’re ready to act – anytime, anywhere.

Our on-site services include:

• Inspection and control of CPP and fixed propellers
• Welding of edge damages and new blade tips
• Straightening and balancing of propeller blades
• Polishing of propeller surfaces
• Hub overhaul and mechanical adjustments
• 3D scanning and documentation
• Supervision and support for technical decision making

Quality you can trust

Our Certified Welders are Ready to Travel Worldwide at Short Notice, Fully Equipped to Carry Out Your On-Site Repairs

This includes quality testing such as penetrant inspection for crack detection. All procedures are performed by class standards and are fully documented.

Learn more about NDT

Portable welding equipment

Welding of Rudder Blade Cones and Other Critical Components

In addition to propeller blade repairs, MarineShaft also performs class-approved welding and build-up of rudder blade cones and other critical rudder components, directly on-site. Our certified welding specialists handle complex geometries and ensure strong, lasting repairs that restore structural integrity. This includes the precision welding of contact surfaces, cones, flanges, and seating areas, executed with complete documentation and in compliance with the requirements of classification societies.

We also offer in-situ machining and installation services to support complete on-site repair solutions.

Class-approved cold welding method

On-site Micro Welding

We perform Micro Welding directly on board using portable equipment. This method is ideal for repairing small surface damages without heating or distorting the material.

By carrying out the repair on-site, we reduce downtime and avoid the costs and time associated with transporting components ashore.

Learn more about micro welding

Fast mobilization - Global support

From Emergency Repairs to Planned Maintenance, We Are Ready to Assist with Minimal Lead Time

MarineShaft’s logistics setup and international network mean we can ship equipment and send certified personnel to virtually any port in the world

Our mobile workshops are fully equipped with portable welding and machining equipment for repairs. We cooperate with professional diving contractors for underwater work when needed.

Case study: On-Site welding

MarineShaft Crossed Continents for an Urgent Propeller Blade Repair

MarineShaft received an urgent call from “Down Under” regarding damage to CPP propeller blades.

After a diver inspection, it became clear that the four propeller blades from M/F Straitsman had sustained extensive damage. The blades were of the Wärtsilä CPP type, made from Alu-Ni bronze.

The job included:

Welding repairs on all four blades
Straightening of one blade
Polishing and balancing

All required crack inspections were carried out before and after welding.

Technical Manager Ollie Muller’s words after the job was completed:
“MarineShaft mobilized quickly and had their technicians travel halfway around the world to reach our vessel. They know their trade very well. The proof is in the propeller blade repairs that were successfully and expertly carried out within the time constraints of our docking. We were very impressed at the high level of craftsmanship that Johnny and Leif put into the repairs.”

On-site Repair Services for All Propeller Types

Our Certified Welders are Ready to Travel Worldwide at Short Notice, Fully Equipped to Carry Out Your On-Site Repairs

Welding of Rudder Blade Cones and Other Critical Components

On-site Micro Welding

From Emergency Repairs to Planned Maintenance, We Are Ready to Assist with Minimal Lead Time

Mobile Machining:

3D Scanning:

Laser Alignment:

MarineShaft Crossed Continents for an Urgent Propeller Blade Repair