Type U 13 submarine

Type U 13 was a class of U-boats built during World War I by the Kaiserliche Marine.

Class overview
Builders	Kaiserliche Werft Danzig
Operators	Imperial German Navy
Preceded by	Type U 9
Succeeded by	U-16
Completed	3
Lost	3
General characteristics
Type	Submarine
Displacement	516 t (508 long tons) surfaced 644 t (634 long tons) submerged
Length	57.88 m (189 ft 11 in)
Beam	6 m (19 ft 8 in)
Draught	3.44 m (11 ft 3 in)
Propulsion	2 shafts 2 × Körting 6-cylinder and 2 × Körting 8-cylinder two stroke paraffin motors with 900 PS (660 kW; 890 shp) 2 × SSW electric motors with 1,040 PS (760 kW; 1,030 shp)
Speed	14.8 knots (27.4 km/h; 17.0 mph) surfaced 10.7 knots (19.8 km/h; 12.3 mph) submerged
Range	2,000 nmi (3,700 km; 2,300 mi) at 14 kn surfaced 90 nmi (170 km; 100 mi) at 5 kn submerged
Test depth	50 m (160 ft)
Complement	4 officers, 25 men
Armament	4 × 45 cm (17.7 in) torpedo tubes (2 each bow and stern) with 6 torpedoes

Design

Type U 13s had an overall length of 57.88 m (189 ft 11 in) The boats' beam was 6.00 m (19 ft 8 in), the draught was 3.44 m (11 ft 3 in). The boats displaced 516 tonnes (508 long tons) when surfaced and 644 t (634 long tons) when submerged.^[1]

Type U 13s were fitted with two Körting 6-cylinder and two 8-cylinder two-stroke paraffin engines with a total of 1,200 metric horsepower (883 kW; 1,184 bhp) for use on the surface and two SSW double-acting electric motors with a total of 760 kW (1,033 PS; 1,019 shp) for underwater use. These engines powered two shafts, which gave the boats a top surface speed of 14.8 knots (27.4 km/h; 17.0 mph), and 10.7 knots (19.8 km/h; 12.3 mph) when submerged. Cruising range was 4,000 nautical miles (7,400 km; 4,600 mi) at 9 knots (17 km/h; 10 mph) on the surface and 90 nautical miles (170 km; 100 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged.^[1] Diving depth was 50 m (164 ft 1 in).

The U-boats were armed with four 45 cm (18 in) torpedo tubes, two fitted in the bow and two in the stern, and carried six torpedoes. The boats' complement was 4 officers and 25 enlisted.^[1]

Ships

Name	Fate[1]
U-13	Sunk on 12 August 1914 in the North Sea.
U-14	Sunk on 5 June 1915 in the North Sea.
U-15	Sunk on 9 August 1914 in the North Sea.