LTCMTS
Posts: 300
Joined: 1/6/2003 From: Newnan, GA Status: offline
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OK, we went through this before. The IJN had only four subs, the KRS (Kirai-Sen) class, I-121 through I-124, copies of the German U 122 minelaying sub of WWI. They laid Type 88 mines (copies of German mines) from mine specific tubes at the stern. This is stated so in Bagnasco, Conway's, Jentschua, Jung & Mickel. Boyd and Yoshida in "The Japanese Submarine Force and World War II" states that other than minelaying ops by the KRS class earl;y in the war. The only other minelaying mission was by I-6 off Brisbane on 13 Mar 43 using German acoustic mines laid through her torpedo tubes. Finally, according to Campbell, the IJN tried to develop a sub minelaying capability, but the Type 1 self-propelled anti-harbor mine, two of which were launched from the marker bouy locker of I-class subs, blew up the test sub. They produced 600 copies of the USN Mk.10 Mod.1 moored contact mine by early 1945, and a limited number of German magnetic and acoustic mines by mid-1945 which suffered from severe reliability problems. Thus, the game is wrong in giving this ability universally to all subs. Not to mention that British and Dutch subs (other than the specifically designed minelayers) were limited by the small number of TT laid M Mk.II magnetic mines produced and the limitation to the "T" and "S" class subs.
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