Shetland Transport is being taken over by Danish shipping and logistics group DFDS.
The Copenhagen-based firm is set to acquire all shares in the local haulage company, which employs 55 staff.
News of the take-over has emerged following an agreement between DFDS and Shetland Transport owners, Kathleen and Hamish Balfour.
Shetland Transport is headquartered in Lerwick and operates with a fleet of 128 trailers and 28 tractors.
It primarily transports fresh fish under temperature controlled conditions from Shetland and Orkney to the UK mainland.
The company also operates a warehouse and a workshop in Lerwick, and has distribution centres in Aberdeen and Coatbridge.
Shetland Transport will change its name to DFDS, and will be part of the DFDS Group’s logistics division, operating throughout the UK and Europe.
In Scotland, DFDS offers transport and logistics services, including warehousing and distribution in Larkhall, Aberdeen, Bellshill, Fort William and Greenock.