Underwater maintenance for vessels and harbour structures
Underwater inspections help assess the condition of structures and identify repair needs. We provide diving services for vessel maintenance and repairs, as well as the upkeep of harbour structures. The scope of work and methods are tailored to the requirements of each project.
Underwater vessel inspections
Inspections of the hull, propeller and rudder help assess the condition of underwater components and identify potential damage. Underwater imaging and a remotely operated vehicle (ROV) can also be used during inspections.
Hull and propeller cleaning
Our services include hull cleaning, propeller polishing and the removal of ropes entangled in propellers or bow thrusters.
Underwater vessel repairs
Underwater maintenance and repairs include work such as sealing leaks, plugging hull openings, welding and installation. Repair methods are selected according to the component and the damage identified.
Harbour structure inspections and repairs
We inspect and repair quays and other underwater harbour structures. Work may include welding, flame cutting, concrete repairs and structural installations. Imaging and measurements can be used to support inspections.
Expertise in underwater work

Diving services in northern ports
Do you need an underwater inspection of a vessel or repairs to a jetty structure? We offer diving services in Oulu and at ports along the coast between Vaasa and Tornio.
Please let us know the location of the site, the scope of the work and your preferred timetable. We’ll work out the best approach for your site and the necessary steps involved.
Need support for vessel operations?
From maintenance and crew services to winter operations, we support vessels across Northern ports.
Or call. +358 50 472 7285
All Services
Coordinated logistics from vessel to warehouse
Integrated port and logistics services from vessel arrival to warehouse handling. Mattson Stevedoring keeps cargo moving with efficient operations, clear coordination and reliable support at every stage.


