I-1 in 1930
|Commissioned:||10 March 1926|
|Fate:||wrecked 29 January 1943|
|Class and type:||J1 type submarine|
|Displacement:||2135 tons (surfaced) 2,791 tons(submerged)|
|Length:||320 ft (98 m)|
|Beam:||30 ft (9.1 m)|
|Draught:||16.5 ft (5.0 m)|
twin shaft MAN 10 cylinder 4 stroke diesels giving 6000 bhptwo electric motors of 2600 ehp
|Speed:||18 kn (33 km/h; 21 mph) (surfaced) 8 kn (15 km/h; 9.2 mph) (submerged)|
|Range:||24,400 nmi (45,200 km; 28,100 mi) at 10 kn (19 km/h; 12 mph)|
|Complement:||68 officers and men|
|Notes:||max depth 80 m (260 feet)|
The Japanese submarine I-1 was a J1 type submarine built by Kawasaki, Kobe, for the Imperial Japanese Navy. She was a large cruiser submarine displacing 2,135 tons and was the lead of four boats built in the class.
She was commissioned on 10 March 1926 and served in the Second World War. On 29 January 1943 during Operation Ke, the New Zealand naval trawlers Kiwi and Moa intercepted and wrecked her after a surface battle at Kamimbo Bay, Guadalcanal.
On 29 January 1943 she encountered the New Zealand minesweepers, Kiwi and Moa. Unable to penetrate I-1's hull with their deck guns, the minesweepers rammed and chased her to shallow water, eventually driving her aground on the reef at Kamimbo Bay, Guadalcanal. The wreck partially protrudes from the water.
Critical materials remained on board and the Japanese command tried unsuccessfully to destroy the boat with air and submarine attacks. The U.S. Navy reportedly salvaged code books, charts, manuals, the ship's log, and other secret documents, as well as equipment.
Around 1970, an Australian treasure hunter in search of valuable metals blew up the bow section of the I-1. This caused much damage since live torpedoes were still inside. The bow section of the sub still remains, split open. The front one-third of the submarine is destroyed but the remaining section is still intact. The I-1 lies with her bow in 45 feet (14 m) and her stern in 90 feet (27 m) of water.