Type UC I submarine

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Type UC I submarine, UC-5
Class overview
Builders	AG Weser, Bremen; Vulkan Hamburg;
Operators	Imperial German Navy  Royal Netherlands Navy  Austro-Hungarian Navy  Regia Marina
Succeeded by	UC II
Built	1915
In commission	1915–1918
Planned	15
Completed	15
Lost	14
Scrapped	1
Preserved	0
General characteristics
Type	coastal minelaying submarine
Displacement	168 t (165 long tons) surfaced 183 t (180 long tons) submerged
Length	33.99 m (111 ft 6 in) o/a 29.62–29.81 m (97 ft 2 in – 97 ft 10 in) pressure hull
Beam	3.15 m (10 ft 4 in)
Height	6.30 m (20 ft 8 in)
Draught	3.04–3.06 m (10 ft 0 in – 10 ft 0 in)
Propulsion	1 shaft 6-cylinder diesel engines, 80–90 PS (59–66 kW; 79–89 bhp) Siemens-Schuckert electric motor, 175 PS (129 kW; 173 shp)
Speed	6.20–6.49 knots (11.48–12.02 km/h; 7.13–7.47 mph) surfaced 5.22–5.67 knots (9.67–10.50 km/h; 6.01–6.52 mph) submerged
Range	780–910 nmi (1,440–1,690 km; 900–1,050 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced 50 nmi (93 km; 58 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	50 m (160 ft)
Complement	14 men
Armament	6 × 1 metre (39 in) internal tubes

The Type UC I coastal submarines were a class of small minelaying U-boats built in Germany during the early part of World War I. They were the first operational minelaying submarines in the world (although the Russian submarine Krab was laid down earlier). A total of fifteen boats were built. The class is sometimes also referred to as the UC-1 class after SM UC-1, the class leader. The Italian X-class submarine was a reverse-engineered and modified type of the UC-1-class.