German submarine U-36 was a Type VIIA U-boat of Nazi Germany’s Kriegsmarine which served during World War II.

Like all Type VIIA submarines, U-36 displaced 626 tonnes (616 long tons) while surfaced and 745 t (733 long tons) when submerged. 

She was 64.51 m (211 ft 8 in) in overall length and had a 45.50 m (149 ft 3 in) pressure hull. U-36‘s propulsion consisted of two MAN 6-cylinder 4-stroke M6V 40/46 diesel engines that totaled 2,100–2,310 PS (1,540–1,700 kW; 2,070–2,280 bhp). 

Her maximum rpm was between 470 and 485. The submarine was also equipped with two Brown, Boveri & Cie GG UB 720/8 electric motors that totaled 750 PS (550 kW; 740 shp). 

Their maximum rpm was 322. 

These engines gave U-36 a total speed of 17 knots (31 km/h; 20 mph) while surfaced and 8 knots (15 km/h; 9.2 mph) when submerged. 

This resulted in a range of 6,200 nmi (11,500 km; 7,100 mi) while traveling at 10 knots (19 km/h; 12 mph) on the surface and 73–94 nmi (135–174 km; 84–108 mi) at 4 knots (7.4 km/h; 4.6 mph) when submerged. 

The U-boat’s test depth was 220 m (720 ft) but she could go as deep as 230–250 m (750–820 ft) without having her hull crushed.

U-36‘s armament consisted of five 53.3 cm (21 in) torpedo tubes (four located in the bow and one in the stern). 

She could have up to 11 torpedoes on board or 22 TMA or 33 TMB mines. U-36 was also equipped with a 8.8 cm SK C/35 naval gun and had 220 rounds for it stowed on board. Her anti-aircraft defenses consisted of one 2 cm (0.79 in) anti-aircraft gun