The Flottenbegleiter F6 was used in the 1st Geleitflotille after being commissioned. Put out of service in 28.10.1938 to be rebuild as a fleet tender. Renamed to Königin Louise the ship was recommissioned on 20.09.1939 and took part in Operation Rheinübung, where it was the command ship of Kriegsschiffgruppe 10, heading for the Danish Island of Fano.  After that it was used in the 4th Escort Division, the 4th RFlottilla and the 6th UJ-Flottilla and was operation in the British Channel. Decommissioned after several engine breakdowns in October 1943. In autumn of 1944 the ship had to be evacuated from a shipyard in Rotterdam where it was for repairs and was towed to the island Borkum. Sunk on 30.03.1945 during a USAAF bombing attack of B-24s on Wilhelmshaven.