Jan Mayen was a German fishing trawler that was requisitioned by the Kriegsmarine in World War II for use as a Vorpostenboot.

Post-war, she was refloated and entered French merchant service as Cap Nord.

The engine powered a single screw propeller driven via a low pressure turbine, double reduction gearing and a hydraulic coupling.

On 16 October she was redesignated V 401 Jan Mayen On 22 August 1944, she was sunk off Bayonne, Basses-Pyrénées, France.

[4] Jan Mayen was refloated post-war, returning to merchant service as the French fishing boat Cap Nord under the registration F 1025.

In 1967, she was sold to the N.V. Reederei v/h Frank Vrolijk, Scheveningen and renamed Vertrouwen, with the registration SCH 73.

She was sold to Copania Extre, Panama and renamed Felicitas II in 1982.