About GMV

Grovfjord Mek. Verksted AS is located in Northern Norway, about a 50 minute drive from Evenes Airport in Harstad. We manufacture aluminium workboats for the fish-farming industry and can offer special vessel designs that are customised to meet the customer’s needs.

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In recent years, we have focused on newbuilding of vessels for the fish-farming industry, including high-speed fish-farming workboats and boats for personnel transport, large service catamarans and traditional fish-farming workboats.

We were founded in 1919 and have 90 years of experience in engine repairs, traditional ship service, conversion and newbuilding of boats. Our new production hall makes it possible for us to deliver about 8 large workboats a year.

Participation in R&D projects in collaboration with the Foundation for Scientific and Industrial Research at the University of Trondheim (SINTEF) and the Norwegian University of Science and Technology (NTNU) has resulted in better construction methods that result in stronger boats with a better finish and lower construction costs.

At present we are one of the leading builders of boats for the fish-farming industry.


Grovfjord Mek. Verksted was founded in 1919 by Markus N. Hansen. Markus had apprenticed under a blacksmith in Svolvær, Norway. At the same time, he took evening classes at a technical school in order to gain theoretical knowledge about the combustion engines that were installed in fishing boats. A few years later, his younger brother Realf joined the firm as active owner.

The repair of engines was their main activity from the very start. Grovfjord Mek. Verksted (GMV) gained a reputation for being especially good at repairing the popular surface-ignition engines manufactured by Bolinder in Sweden. GMV further developed this engine around 1930 and manufactured conversion sets up to the close of the 1950s. The conversion consisted of replacing the friction bearings in the bearing faces and the gudgeon pins with SKF anti-friction bearings and needle bearings. To that were added cylinders with a modified geometry on the flushing and outlet ports in order to achieve a better clean flushing and efficiency.

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Already around 1930, Markus and Realf saw that the surface-ignition engines would be replaced by pure diesel engines. Textbooks about this type of engine were purchased, and they started the development of a 2-stroke diesel engine with Bosch fuel pumps and fuel valves. One of the prototypes came out in 1938-39 and was utilised up to 1946 in the production of electricity in the winter when the company’s own hydro-power plant had too little water. The main components of this prototype were taken care of. The aim was to get under way with ordinary production as soon as the 2nd World War was over, but Markus gave up these plans when he realised that mass-produced high-speed 4-stroke diesel engines would take over the fishing boat market in just a short time.

The company carried on further as a pure repair workshop until the middle of the 1970s. In that period, a number of power generators were also installed for the Norwegian Armed Forces and NATO. After that, the company also began to build aluminium and steel fishing boats up to 88 feet in length. Conversion of seiners to shrimp trawlers constituted a significant amount of the company’s activity in the 1980s, and in the 90s, many fishing boats were lengthened with the addition of a shelter deck. The Norwegian National Coastal Administration was also an important customer with assignments involving the repair and conversion of dredging barges.

In 1998, they decided to focus their operations on the construction of aluminium workboats. Internal training measures were implemented and a lot of new equipment was purchased. GMV has made substantial investments in the development of its own designs in close collaboration with its customers. The company is also taking part in R&D projects together with other shipbuilders, SINTEF and NTNU. This has resulted in new construction methods that result in stronger boats with a better finish and lower construction costs. A new and very efficient facility went into use in 2007. GMV delivered eight fish-farming boats in 2008 and is currently one of the leading builders of boats for the fish-farming industry.

Shipbuilding facilities

Assembly hall560 m2
Overhead crane10 tonn
Overhead crane2×5 tonn
Welding hall500 m2, 10 tonn
Overhead crane400 m2
Machine shop1,5 tonn
Overhead crane 300 m2
Welding hall, north5 tonn
Overhead crane400 tonn
Slipway, outdoor (maximum length 37 m, width 7.5 m)105 tonn
Slipway, outdoor (maximum length 18 m, width 10.5 m) – catamaran100 tonn
Slipway, indoor (maximum length 23 m, width 7.5 m)130 m
Dock10 tonn
Tower crane south, rail-mounted8 tonn
Tower crane north, rail-mounted
Plastic hall210m2