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

The fishing boat registration PG 419 was allocated, as were the Code Letters DFCA.

[1] On 6 June 1944, Friedrich Busse was in port at Caen, Calvados, France when Operation Overlord started, and was trapped there with V 206 Otto Bröhan and the motor minesweeper R 231 as their retreat from the port had been cut off.

[3][4][5] Friedrich Busse was refloated in 1945 and repaired, becoming the salvage vessel King Hal under British ownership.

[1][6] On 18 December 1952, Torhallur was sold to the Hochseefischerei Carl Kämpf, Bremerhaven, West Germany.

She was allocated the fishing boat registration BX 372 and the Code Letters DFAL.

[1][7] She was sold to Agyris A. Theocharis, Ambelaki, Greece in December 1958 and was renamed Delfini in 1962.