Education
Imperial Japanese Naval Academy.
佐久間 勉
Imperial Japanese Naval Academy.
One of his classmates was the future Navy Minister and Prime Minister of Japan Mitsumasa Yonai. He was assigned to the cruiser Azuma shortly before the start of the Russo-Japanese War. He subsequently served with the 15th Torpedo Boat Flotilla, and was on board the cruiser Kasagi during the Battle of Tsushima on May 26, 1905.
After completing the torpedo warfare school, Sakuma served on the submarine tender Karasaki and was later a squad leader on the Japanese cruiser Tsushima.
He started to get involved in the submarine service in 1906, first taking the command of the Number.4 submarine, and eventually the Japan-built Holland-type Number.6 in 1908. On April 15, 1910, while engaged in a practice dive in the Inland Sea off of the coast of Yamaguchi Prefecture, the submarine suffered a malfunction resulting in the loss of the ship and crew.
Two days later the submarine was recovered by Japanese authorities, and Sakuma"s journal was found, with a detailed analysis of what may have caused the accident, ending with an apology to Emperor Meiji for the loss of the submarine and 14 crew members before the ship"s air ran out. The journal was posted in later press reports, and Sakuma became a posthumous national hero and an example for courage and steadfastness within the Imperial Japanese Navy.