German submarine U-1015

German submarine U-1015 was a Type VIIC/41 U-boat of Nazi Germany's Kriegsmarine during World War II.

She was ordered on 23 March 1942, and was laid down on 5 April 1943 at Blohm & Voss, Hamburg, as yard number 215. She was launched on 7 February 1944 and commissioned under the command of Oberleutnant zur See Hans-Heinz Boos on 23 March 1944.

Design
German Type VIIC/41 submarines were preceded by the heavier Type VIIC submarines. U-1015 had a displacement of 769 t when at the surface and 871 t while submerged. She had a total length of 67.10 m, a pressure hull length of 50.50 m, an overall beam of 6.20 m, a height of 9.60 m, and a draught of 4.74 m. The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2800 to 3200 PS for use while surfaced, two BBC GG UB 720/8 double-acting electric motors producing a total of 750 PS for use while submerged. She had two shafts and two 1.23 m propellers. The boat was capable of operating at depths of up to 230 m.

The submarine had a maximum surface speed of 17.7 kn and a maximum submerged speed of 7.6 kn. When submerged, the boat could operate for 80 nmi at 4 kn; when surfaced, she could travel 8500 nmi at 10 kn. U-1015 was fitted with five 53.3 cm torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes or 26 TMA or TMB Naval mines, one 8.8 cm SK C/35 naval gun, 220 rounds, and an anti-aircraft gun. The boat had a complement of between forty-four and fifty-two.

Service history
U-1015 was sunk on 19 May 1944, after colliding with GS U-1014 in the Baltic Sea west of Pillau. Only 14 survived, including her commander, Oberleutnant zur See Hans-Heinz Boos, out of a crew of 50.

The wreck now lies at 55.15°N, 19.18333°W.