Type B1 submarine
I-26
|
|
| Class overview | |
|---|---|
| Name: | B1 class |
| Operators: |
 Imperial Japanese Navy |
| Preceded by: | Type J3 submarine |
| Succeeded by: | Type B2 submarine |
| Completed: | 18 |
| Lost: | 17 |
| Scrapped: | 1 |
| General characteristics | |
| Class and type: | Cruiser submarine |
| Displacement: |
|
| Length: | 108.7 m (356 ft 8 in) overall |
| Beam: | 9.3 m (30 ft 6 in) |
| Draft: | 5.1 m (16 ft 9 in) |
| Installed power: |
|
| Propulsion: |
|
| Speed: |
|
| Range: |
|
| Test depth: | 100 m (330 ft) |
| Crew: | 94 |
| Armament: |
|
| Aircraft carried: | 1 × floatplane |
| Aviation facilities: | 1 × catapult |
The Type B1 submarine (巡潜乙型潜水艦 Junsen Otu-gata sensuikan, "Cruiser submarine type B"?), also called I-15-class submarine (伊一五型潜水艦 I-jū-go-gata sensuikan?) was the first group of boats of the Type B cruiser submarines built for the Imperial Japanese Navy (IJN) during the 1940s. In total 20 were built, starting with I-15, which gave the series their alternative name.
The Type B submarines were derived from the earlier KD6 sub-class of the Kaidai class and were equipped with an aircraft to enhance their scouting ability. They displaced 2,631 tonnes (2,589 long tons) surfaced and 3,713 tonnes (3,654 long tons) submerged. The submarines were 108.7 meters (356 ft 8 in) long, had a beam of 9.3 meters (30 ft 6 in) and a draft of 5.1 meters (16 ft 9 in). They had a diving depth of 100 meters (330 ft).
For surface running, the boats were powered by two 6,200-brake-horsepower (4,623 kW) diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a 1,000-horsepower (746 kW) electric motor. They could reach 23.6 knots (43.7 km/h; 27.2 mph) on the surface and 8 knots (15 km/h; 9.2 mph) underwater. On the surface, the B1s had a range of 14,000 nautical miles (26,000 km; 16,000 mi) at 16 knots (30 km/h; 18 mph); submerged, they had a range of 96 nmi (178 km; 110 mi) at 3 knots (5.6 km/h; 3.5 mph).
...
Wikipedia