Built by Karasukojima Naval Armory as the 37th Type A Midget Submarine completed. Delivered to the Imperial Japanese Navy (IJN).
On November 13, 1942 Japanese submarine I-20 embarks this midget submarine and departs Truk bound for Guadalcanal.
That same day returns to Truk because the midget submarine suffered a malfunction.
On November 19, 1942 at 3:00am Japanese submarine I-20 launches HA-37 roughly six miles off Cape Esperence on Guadalcanal. Aboard is commander Lt(jg) Miyoshi Yoshiaki with crew member PO1C Umeda Kiyoshi.
A few minutes later, HA-37's steering system develops a serious oil leak but continues on the surface but fails to sight any targets. At 6:55am, scuttled off Cape Esperence on Guadalcanal.
Fates of the Crew
Miyoshi and Umeda escape ashore and join Japanese forces on Guadalcanal.
Possibly, this submarine might be Type A Midget Submarine (Cape Esperence 1945). On January 4, 1945 USCGC Ironwood (WLB-297) began salvaging this submarine from a depth of 30' off Cape Esperence on Guadalcanal.
Divers, working from a small boat, use a hose and crowbars to clear a space under the bow and stern of the submarine. On January 9, 1945 a chain sling is rigged around the bow for salvage. The identity of this 1945 salvaged midget submarine is unknown but possibly HA-8, HA-22 or HA-37.
Combined Fleet - Midget Submarines in the Solomon Islands 1942
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January 10, 2018