Japanese submarine Ha-105

The Ha-101-class submarines were designed as small, cheap transport submarines to resupply isolated island garrisons. They displaced {{Convert|429|LT|t|0|disp=flip|sp=us}} surfaced and {{Convert|493|LT|t|0|disp=flip|sp=us}} submerged. The submarines were {{convert|44.5|m|ftin|sp=us}} long, had a beam of {{convert|6.1|m|ftin|sp=us}} and a draft of {{convert|4.04|m|ftin|sp=us}}. They were designed to carry {{Convert|60|t|LT|0|sp=us}} of cargo.Carpenter & Dorr, p. 140

For surface running, the boats were powered by a single {{convert|400|bhp|lk=in|0|adj=on}} diesel engine that drove one propeller shaft. When submerged the propeller was driven by a {{convert|140|hp|0|adj=on}} electric motor. They could reach {{convert|10|kn|lk=in}} on the surface and {{convert|5|kn}} underwater.Chesneau, p. 204 On the surface, the Ha-101s had a range of {{convert|3000|nmi|lk=in}} at {{convert|10|kn}}; submerged, they had a range of {{convert|46|nmi|abbr=on}} at {{convert|2.3|kn}}. The boats were armed a single mount for a Type 96 25 mm AT/AA Gun anti-aircraft gun.Bagnasco, p. 195

Ha-105 was laid down on 29 June 1944 by Mitsubishi at Kobe, Japan, as Small Supply Submarine No. 4605.{{cite web |url= http://www.combinedfleet.com/HA-105.htm |title=IJN Submarine HA-105: Tabular Record of Movement |first1=Bob |last1=Hackett |first2=Sander |last2=Kingsepp |work=combinedfleet.com |year=2015|access-date=8 October 2020}} She was launched on 31 October 1944 and was named Ha-105 that day. She was completed and commissioned on 19 February 1945.

Upon commissioning, Ha-105 was attached to the Kure Naval District and assigned to Submarine Squadron 11 for workups. On 17 April 1945, she was reassigned to Submarine Division 16 for supply operations. On 25 May 1945, however, she was reassigned again, to Submarine Unit No. 1, and she departed Kure, Japan, that day to operate south of Honshu on radar picket duty prior to a major kamikaze attack against Allied ships off Japan. She returned to Kure in mid-June 1945.

Ha-105 got underway from Kure on 4 July 1945 for her first and only supply run, bound for Amami Ōshima in the Amami Islands between Kyushu and Okinawa. Arriving there on 10 July 1945, she unloaded her cargo and quickly departed on her return voyage. She reached Kure in mid-July 1945 and began a conversion that would allow her to carry aviation gasoline.

Hostilities between Japan and the Allies ended on 15 August 1945, and on 2 September 1945, Ha-105 surrendered to the Allies at Kure. On 2 November 1945, she was reassigned to Japanese Submarine Division Two under United States Navy command along with her sister ships {{ship|Japanese submarine|Ha-103||2}}, {{ship|Japanese submarine|Ha-106||2}}, {{ship|Japanese submarine|Ha-107||2}}, {{ship|Japanese submarine|Ha-108||2}}, {{ship|Japanese submarine|Ha-109||2}}, and {{ship|Japanese submarine|Ha-111||2}}. In November 1945, the U.S. Navy ordered all Japanese submarines at Kure, including Ha-105, to move to Sasebo, Japan.

The Japanese struck Ha-105 from the Navy list on 30 November 1945. She was among a number of Japanese submarines the U.S. Navy scuttled off the Goto Islands near Sasebo in Operation Road's End on 1 April 1946, sinking at {{coord|32|37|N|129|17|E|name=Ha-105}}.

{{Reflist|30em}}

• {{cite book|last=Bagnasco |first=Erminio |title=Submarines of World War Two |year=1977 |publisher=Naval Institute Press |location=Annapolis, Maryland |isbn=0-87021-962-6}}
• {{cite book|last1=Carpenter|first1=Dorr B.|last2=Polmar|first2=Norman|title=Submarines of the Imperial Japanese Navy 1904–1945|year=1986|publisher=Conway Maritime Press|location=London|isbn=0-85177-396-6|name-list-style=amp}}
• {{cite book|title=Conway's All the World's Fighting Ships 1922–1946|editor1-last=Chesneau|editor1-first=Roger|publisher=Conway Maritime Press|location=Greenwich, UK|year=1980|isbn=0-85177-146-7}}
• {{cite web|url=http://www.combinedfleet.com/HA-105.htm|title=IJN Submarine HA-105: Tabular Record of Movement|last1=Hackett|first1=Bob|last2=Kingsepp|first2=Sander|year=2015|work=SENSUIKAN! Stories and Battle Histories of the IJN's Submarines|publisher=Combinedfleet.com|access-date=8 October 2020}}
• {{cite web|url=http://www.combinedfleet.com/type_sys.htm|title=Sen Yu Sho|last=Hackett|first=Bob |author2=Sander Kingsepp |year=2015|work=Sensuikan!|publisher=Combinedfleet.com|access-date=7 October 2020}}
• {{cite web |url=https://rekigun.net/ |title=Rekishi Gunzō}}, History of Pacific War Extra, "Perfect guide, The submarines of the Imperial Japanese Forces", Gakken (Japan), March 2005, {{ISBN|4-05-603890-2}}
• Ships of the World special issue Vol.37, History of Japanese Submarines, {{cite web |url=https://www.ships-net.co.jp/ |title=Kaijinsha}}, (Japan), August 1993
• The Maru Special, Japanese Naval Vessels No.43 Japanese Submarines III, Ushio Shobō (Japan), September 1980, Book code 68343-43
• The Maru Special, Japanese Naval Vessels No.132 Japanese Submarines I "Revised edition", Ushio Shobō (Japan), February 1988, Book code 68344-36
• Senshi Sōsho Vol.88, Naval armaments and war preparation (2), "And after the outbreak of war", Asagumo Simbun (Japan), October 1975

{{Ha-101-class submarines}}

{{1946 shipwrecks}}

{{DEFAULTSORT:Ha-105}}

Category:Ha-101-class submarines

Category:Ships built by Mitsubishi Heavy Industries

Category:1944 ships

Category:World War II submarines of Japan

Category:Maritime incidents in 1946

Category:Scuttled vessels

Category:Shipwrecks in the Pacific Ocean

Category:Shipwrecks of Japan