| Class overview | |
|---|---|
| Builders: | AG Weser, Bremen Blohm & Voss, Hamburg |
| Operators: | Kaiserliche Marine French Navy |
| Preceded by: | UB I |
| Succeeded by: | UB III |
| Built: | 1915–1916 |
| In commission: | 1915–1931 |
| Completed: | 30 |
| General characteristics | |
| Displacement: | 236 long tons (240 t) surfaced 292 long tons (297 t) submerged (UB30 group 279/305 tons) |
| Length: | 36.1 m (118 ft) o/a |
| Beam: | 4.4 m (14 ft) |
| Draught: | 3.7 m (12 ft) |
| Propulsion: | 2 shafts Körting, Daimler or Benz diesel engines, 270–284 hp (201–212 kW) Siemens-Schuckert electric motor, 280 hp (209 kW) |
| Speed: | 9 knots (17 km/h; 10 mph) surfaced 5.8 knots (10.7 km/h; 6.7 mph) submerged |
| Range: | 6,650 mi (10,700 km) at 5 kn (9.3 km/h; 5.8 mph) surfaced 45 mi (72 km) at 5 kn (9.3 km/h; 5.8 mph) submerged |
| Test depth: | 50 m (160 ft) |
| Complement: | 22 men |
| Armament: | • 2 × 50 cm bow torpedo tubes (2 external stern tubes fitted in some boats) • 1 × 50 mm or 88 mm deck gun |
The UB II type submarine was a class of U-boat built during World War I by the Kaiserliche Marine. They were enlarged from the preceding type UB I and were more effective vessels. The boats were a single hull design with a 50 metre maximum diving depth and a 30-45 second diving time. In 1915 and 1916, 30 were built at two different shipyards[1].
There were 30 Type UB II submarines commissioned into the Kaiserliche Marine.
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