A proud heritage
Callenberg Technology Group enjoys a proud heritage that spans over 100 years in marine and offshore markets.
Callenberg Technology Group was launched in January 2015, after demerging from Wilhelmsen Maritime Services with a mandate to further develop Insulation, HVAC & Electrical Energy Management solutions. In October 2016, Callenberg Technology Group was acquired by Trident Maritime Systems.
Semler & Mathiassen (Semco) establish a castings and stove manufacturer business.
In 1911 DEC was acquired to provide electrical installations capabilities. In 1945 Semco start producing high-quality technical installations for the marine and shipbuilding industry.
With origins as a fan factory in Bryn, Norway, NVF developed into a civil engineering firm with a focus on air engineering projects for treatment plants.
Success in this market led to further large industrial and offshore projects.
Established in Jönkoping, Sweden as a producer of environmental equipment to industry and power plants.
Svenska Fläkt Fabriken (SFF) acquire Norsk Viftefabrikk (NVF) to establish themselves in the broader Scandinavian market.
Svenska Fläkt Fabriken (SFF) establishes a marine division in Gothenburg to grow their ventilation business in the local shipbuilding market.
Established in Drammen, Norway, providing heating and dress insulation solutions to the food and fishing industry.
In the following decades, Ticon established themselves in various industrial, marine and offshore markets.
Established in Uddevalla, Sweden, providing electrical installations to Uddevalla shipyard and later on to all Swedish yards.
Established in Lysekil, Sweden, providing automation solutions to Swedish shipyards and ship owners.
Established in Aberdeen, UK to provide specialist heating, ventilation, air conditioning, environmental and refrigeration services to the offshore industry.
Early success with BP led to further long term maintenance contracts from other operators and supported the establishment of a facility in Great Yarmouth UK.
ABB market the Fläkt and Norsk Viftefabrikk (NVF) brands.
Swedish, ABB Fläkt Marine division targets the marine market, whilst the Norwegian ABB Miljø division targets the offshore market.
Leading Norwegian maritime service provider, Unitor seeks to grow the maritime insulation market by acquiring the marine divisions of TICON Isolering.
Private equity fund, Segulah enters the marine and offshore market with an ambition to build a global player.
Callenberg enters the offshore HVAC market and introduces the AC Marine brand.
Callenberg expands their geographical market reach within electrical & automation for marine and offshore.
Callenberg compliments their offshore ventilation business and enters the marine HVAC market through the acquisition of Fläkt Marine.
Wilh. Wilhelmsen group clearly signals their intention to dominate the maritime services market by establishing WMS and acquiring Unitor.
WMS growth ambitions continue with the acquisition of Callenberg, bringing HVAC and electrical engineered solutions into the portfolio.
WTS becomes the engineered solutions home of WMS, developing Safety, Insulation, HVAC & Electrical Energy Management solutions.
A successful acquisition of IES supports WTS ambitions to increase their HVAC aftermarket presence in the North Sea offshore market.
Demerged from Wilhelmsen Maritime Services with a mandate to further develop Insulation, HVAC & Electrical Energy Management solutions.
Headquarters established in Gothenburg.
Callenberg joins Trident Maritime Systems to form one of the largest suppliers to the maritime industry within its field of expertise.
The combined group with its US headquarters engages close to 2000 employees and contractors with
subsidiaries in 19 countries.