Japanese sailor’s diary for the year 1930. The writer was stationed on board the Japanese Armored Heavy Cruiser Asama at Yokosuka Harbor. The Asama was launched on March 22, 1898 and saw action in the Russo-Japanese War as part of the 2nd Squadron of the 2nd Fleet at the Battle of Chemulpo Bay, in which it sank the Russian ships Varyag and Korietz and the Battle of Tsushima. At the time of the writing of this diary, the Asama was being fitted with new Kampon water-tube boilers for use as a coastal defense vessel. It would ultimately end up as scrap under the American Occupation in 1947. The diary has entries regarding the repairing of the Asama as well as news events such as a Trans-Pacific flight by an American pilot and news of the November 14, 1930 ultra-nationalist plot to assassinate Prime Minister Osachi Hamaguchi as a result of his failure at the London Naval Conference earlier that year. Hamaguchi survived the attack but later died of sustained wounds. This would be the first in a series of assassinations of Japan’s political leaders as the nationalists took power.