SSE – Svensk Sjöentreprenad

SSE – Svensk Sjöentreprenad AB is one of Sweden’s most complete providers of underwater operations and services for the shipping industry. Frog Marine Service, a well-known company already familiar to many in the industry, is now part of SSE.

SSE is one of the few diving companies in the country, if not the only one, that is approved by all leading classification societies (ABS, BV, ClassNK, DNV, RINA and Lloyd’s Register) to perform In-Water Surveys (IWS).

Hull cleaning and servicing for the shipping industry

In addition to certified IWS, the company offers hull cleaning, propeller polishing, servicing, and changing instruments, such as echo sounders and speed logs. SSE also provides the cleaning of sea chests, overboard valves, and scrubber outlets. Other services provided by the company include planned maintenance and emergency repairs directly alongside or at anchorage.

SSE operates the diving vessel Frog Cygnus, stationed in Gothenburg, enabling it to quickly cover the entire west coast and the Øresund area, including assignments in Denmark and Southern Norway. With Frog Cygnus, SSE can perform operations both alongside and at anchorage. Its mobile diving systems give the company the flexibility to carry out IWS, hull cleaning, propeller work and sea chest servicing on vessels along the entire Swedish coastline.

Specialised services for vessels

• Certified IWS inspections by all major classification societies
• Hull cleaning, including eco-friendly HullWiper technology
• Propeller polishing
• Sea chest cleaning and overboard valve service
• Plugging of intakes and scrubber outlets
• Anode replacement and corrosion protection
• Anchor replacement and lost anchor recovery
• Planned maintenance and emergency response – available 24/7, all-year-around

Fleet, equipment, and capabilities

SSE operates a modern and versatile fleet, enabling it to support both urgent shipping services and large-scale marine infrastructure projects. The company has the resources that enable it to quickly mobilise for emergency responses and also handle long-term assignments that require robust technical solutions.

Services include:

• Diving vessel Frog Cygnus – fully equipped for inspections, maintenance and repairs on ships
• Mobile diving systems – enabling IWS, hull cleaning, sea chest service and propeller work at any Swedish port
• Multicat and tugboats – supporting towing, anchor handling and a wide range of port operations
• Jack-up rigs and barges – for marine construction, geotechnical sampling and heavy-duty port projects
• Capability to perform operations directly from shore in all Swedish ports, providing maximum flexibility and efficiency

About SSE

SSE is certified according to ISO 9001 (Quality), ISO 14001 (Environment) and ISO 45001 (Occupational Health & Safety). Together with its unique IWS approvals, the company is a trusted and internationally recognised partner.

As part of the MarCon Group, together with Sventab, Marcon Teknik, Dykab and Tungdykargruppen, SSE has access to a wide range of expertise and resources, enabling it to deliver complete solutions.

From IWS inspections and hull cleaning to complex repairs and long-term maintenance programs, SSE delivers the right solution, at the right time, in the right place.