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AM Class Submarine
(A Modified)

2,620 tons surfaced
4,762 tons submerged
113.7m x 11.7m x 5.89m
6 × torpedo tubes
with 12 torpedoes
1 x 140mm deck gun
10 x 25mm AA guns
2 x M6A1 Seirans
Click For Enlargement

Ship History
Japanese AM Class Submarine (A Class, modified) was a large seaplane carrier submarine of the Imperial Japanese Navy, with a hangar space for two Aichi M6A1 Serian. Laid down on May 18, 1943 by Kawasaki at Kobe. Launched and comissioned on March 14, 1945.

Wartime History
Plans were made to use I-400, I-401, I-13 and I-14 on a mission to attack the Panama Canal and disable the locks. During June 1945 the decision was made to switch targets and instead attack the US Navy anchorage at Ulithi Atoll. The mission was code-named Hikari (Shining Light), the first phase of Operation Arashi. The plan was for I-13 and I-14 to proceed to Truk during early July 1945. I-14 would transport crated C6N2 Myrt reconnaissance aircraft to relay target information about aircraft carriers and troop transports to I-400 and I-401 that would launch six Aichi M6A1 Serian for a strike planned for August 17, 1945.

On July 6, 1945 I-14 was under repair in Ominato and attacked by US Navy carrier aircraft. She submerged and remained underwater until the end of the raid. Then, I-14 is loaded two crated C6N2 Myrt aircraft. On July 14 departs Ominato for Truk. Enroute, the I-14's sound operator picks up screw noises of a lone merchant. Cdr Shimizu considers an attack, but abandons the idea so not to endanger the mission.

During the voyage, the I-14 is detected by enemy surface craft and tracked by several destroyers. She is forced to remain underwater for 35 hours, expending their batteries and compressed air, forcing the submarine to raise its snorkel to recharge the batteries. On August 4, arrives at Truk and unloads the crated Myrts. On August 15, after Japan surrenders and the submarine is ordered to return to Japan via Hong Kong on the surface, departing Truk on August 18.

Sited by US Navy carrier aircraft from Task Force 38 (TF-38), the I-14 surrenders to destroyers USS Murry DD-576 and USS Dashiell DD-659 on August 27, 1945 roughly 227 miles northeast of Tokyo. Afterwards, the submarine proceeds to Pearl Harbor for evaluation by the US Navy.

Sinking History
On May 28, 1946 hit by a torpedo fired by USS Bugara SS-331 to tests a new torpedo Mark 10-3 exploder, sinking off Barber's Point into deep water. Over the course of several days. a total of four captured submarines were sunk including I-201, I-400, and I-401.

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Last Updated
February 4, 2018


21 13 N
158 08 W

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