A1 type submarine

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Japan Japan
Operators: Imperial Japanese Navy Ensign Imperial Japanese Navy
Preceding class: J3 type submarine
Following class: A2 type submarine
In service: 1941
Out of service: 1944
Ships in Class
Ships in class: I-9, I-10, I-11
General Characteristics
Displacement: 2,919 tons surfaced
4,149 tons submerged
Length: 372.8 ft
Beam: 31.3 ft
Draft: 17.5 ft
Propulsion and power: 2 diesels: 12,400 hp
electric motors: 2,400 hp
Speed: 23.5 knots surfaced
8 knots submerged
Range: 16,000 nautical miles at 16 knots
Test depth: 100 m (330 ft)
Complement: 114 officers and men
Armament: 6 × 533 mm forward torpedo tubes
18 torpedoes
1 × 140 mm 50 calibre gun
Aircraft complement: 1 Yokosuka E14Y seaplane

A1 Type submarines were submarines of the Imperial Japanese Navy during World War II, equipped with an aircraft. The design was an adaptation of the J3 Type design, with the hangar opening forward of the conning tower.

Three boats were built, and equipped with communication facilities allowing them to operate as the command ships for groups of submarines.

Imperial Japanese Navy
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