Our story

It all started in 1980 with our first offshore business unit in Esbjerg

Now we deliver projects, solutions and manpower to the global energy sector

With sales offices in DK, UK, Australia, China, singapore the US and Central America

It all started back in ...

From stove manufacturer to global project engineering

It all started in 1888, when Semler & Mathiassen, a castings and stove manufacturer opened for business. The company expanded rapidly, and ventured into new areas. But it wasn’t until 1945 that we began producing high-quality technical installations for the marine and ship-building industry.

Organic growth and acquisitions in Denmark, Norway and the UK gave Semco Maritime the capacity to handle even the largest upgrade projects.

We now have sales offices in Australia, China, the US and Central America. And, with advanced fabrication facilities in Denmark and Vietnam, we are setting new standards in the global energy market.

Today we are a single-source supplier with a great team of highly qualified people dedicated to meeting customer expectations in projects, solutions, and manpower for the energy sector all over the world. Click below to learn more about our 2020 strategy.


  • We established our first offshore business unit in Esbjerg in 1980, to provide project engineering, maintenance and manpower services for the North Sea’s offshore operations.
  • As the company evolved, so did the structure and in 1998, Semco Maritime was established.
See all locations
Our story


  • Semco Maritime is certified according to OHSAS 18001 and ISO 14001.
  • Esbjerg Oilfield Services is acquired and integrated in full with existing activities
All HSEQ certificates
OHSAS 18001 and ISO 14001


  • We acquired Secure Systems ApS and becomes Premier Cisco Partner.
  • Semco Maritime takes over the project engineering and consultancy department of Delpro A/S
  • Semco Maritime acquires AGR in Norway.
  • We opened a production plant in Vietnam.




  • Acquisition of Danish Rope Access.
  • UK based company Capelrig is acquired. This opens up a new chapter in our story.
  • Norwegian based fire & safety contractor Inmaco is acquired.
  • Hanøytangen is acquired. This fulfils the North Sea Triangle.
Yards and facilities

We have done it before ...

Find selected project references on the link below - or contact us if you need more information!
Our experience

General enquiries

Please contact our head office

Semco Maritime A/S

Esbjerg Brygge 30

6700 Esbjerg





Contact an office close to you

We have subsidiaries all around the world: