The Norwegian Institute of Marine Research (the Contracting Authority) would like to hire a combined ringnot/trawl vessel for estimation of Norwegian spring herring under the spawning ladder in the period 2027-2028. The contract will be valid for 2 years from 01.01.2027 until 31.12.2028. The annual expedition shall take place for approx. 16 days within the period 10 - 28 February, but with the right to an extension or shortening for up to 2 days. The vessel must have at least 15 tons quota of Norwegian spring herring.