Hinrich Hey was 55.00 metres (180 ft 5 in) long, with a beam of 8.17 metres (26 ft 10 in). She had a depth of 4.62 metres (15 ft 2 in) and a draught of 3.74 metres (12 ft 3 in).[1] She was assessed at 422 GRT, 156 NRT. She was powered by a triple expansion steam engine, which had cylinders of 35 centimetres (13+3⁄4 in), 88 centimetres (34+5⁄8 in) and 88 centimetres (34+5⁄8 in) diameter by 65 centimetres (25+5⁄8 in) stroke. The engine was made by Deschimag Seebeckwerft, Wesermünde. It was rated at 127nhp. The engine powered a single screw propeller driven via a geared low pressure turbine.[2] It could propel the ship at 12 knots (22 km/h).[1]
^ abc"Hinrich Hey (09595)"(PDF). Lloyd's Register: Trawlers &c. HIN-HIY (in English and French). London: Lloyd's Register. 1935–1936. Retrieved 4 June 2022 – via Southampton City Council.
Gröner, Erich (1993). Die deutschen Kriegsschiffe 1815-1945 (in German). Vol. 8/I: Flußfahrzeuge, Ujäger, Vorpostenboote, Hilfsminensucher, Küstenschutzverbände (Teil 1). Koblenz: Bernard & Graefe. ISBN3-7637-4807-5.