FLB 531 that came inservice for the Germans in 1942 was captured in May 1945 by British RAF soldiers in Bergen. It was given the name Robin Hood. It was used as a Minesweeper/clearing vessel as UAM1 Robin Hood. Nowegian army has not registered this vessel as part of the UAM flotila at the time! More information will follow, especially what happend between 1945 and 1980, but for now here is a timeline that will be updated continually.
02 October 1942
Launche

FL.B 531 and 530 are assigned to the SNDF 5 (North) upon completion of the “Barchstelze” course. Kadoschub arranges transfer immediatly after completion of the equip,ent with consent of SNDF 5
16 October 1942
New Orders
Instead of FL.B 531, FL.B 509 is assigned to SNDF 5 (North)
14 December 1943
Moved
FL.B 510 and 531 are to be accelerated from Travemünde to Schellingwoude. Boats are subordinate to Insp. See, troop service and administratively Seeflughorst Schellingwoude. Boats are still available for the “Barchstelze” course.
03 June 1944
Transfere started
At the instigation of L.In.16, FL.B 510 and 531 that became vacant in Schellingwoude are to be assigned to SNDF (North) in an accelerated manner, report the start of the transfer.
14 August 1944
Seenotflotille 50
Seenotflottille 50 (Sea Rescue Flotilla) main port of Tananger/Norway
01 May 1945
Captured
Found in fully intact condition in Bergen harbour on 10 May 1945 by RAF soldiers
1986
in UK
Photographed in UK with Marking 372

1993
Sunked

Article refering to boat sunk in mud.
2020
MA efforts
Documentation of the life of the vessel