About KBA Marine

Ship Repairs

Ship Repairs

Underwater Welding and Cutting

KBAM divers have extensive experience in wet welding for temporary repairs and construction of all vessel types including bulk carriers and all other commercial ships. Underwater welding is a safe, reliable and cost effective technique for temporary, repair and construction. Our certified commercial divers are experienced certified/coded underwater welders.

Sacrificial anode replacement

While our dive teams are able to install all types of anodes quickly and efficiently by either bolt-on attachments or by underwater wet welding. We can also supply most types of anodes on short notice as we have long standing relationships with the local suppliers. We also replace and install ICCP systems on a regular basis.

External Doubler plates

Doubler plates are typically used for temporary underwater repairs on the shell plating of steel. KBAM offer under-water wet welding of doubler plates. Examples would be over areas of high corrosion like ballast water elephant foot discharge points, tank sounding pipes, poor cathodic anode protection systems and cracks in non-fuel oil tank locations. We advise NDT testing be carried out prior to the installation of doubler plates to ensure proper understanding of the localized condition.


Cofferdam repairs involve a tank-like structure with an open side being attached to the ship’s hull by divers after which an access tunnel that extends above the water line is attached. The whole assembly is then pumped dry, allowing work to be carried out on the ship’s hull from inside the tank. KBAM can provide cofferdams of any size required by our clients. A cofferdam allows for insert plate repairs to be carried out whilst the vessel is still in the water, enabling our clients to avoid the cost of emergency dry docking.

Underwater Non-destructive testing (NDT)

Metal thickness measuring is commonly performed to determine the current state of the structure when compared to its original design. Magnetic particle inspection (MPI) crack testing involves determining the extent of a crack in ferrous metals which may not be visible to the eye. MPI crack testing can be carried out in the wet which is achievable using MPI systems. The identified crack can be documented using photography and/or real time video.

• Magnetic particle inspection

• Ultrasonic thickness measurement