factories, a machine-shop to convert the mark 93 torpedoes to kaitens, an exercise yard, a ceremony square, administrative buildings, and the harbour. From the machine-shop, a narrow-gauge railway enters a tunnel blasted through 400 metres of rock to the kaiten launch pier, where training began tonight. I jankenned with Takashi Higuchi, a classmate from Nara, for the privilege of the first kaiten run co-piloted with Sub-Lt Kuroki. His stone beat my scissors! Never mind, my turn will come tomorrow.
4th August
Sultry, humid, hot weather. Tragedy has struck so soon. Last night, Sub-Lt Kuroki and Lt Higuchi failed to return from their run around the northern body of Otsushima. Frogmen spent the night searching for their kaiten. It was finally found shortly after dawn, a mere 300 metres from the launch pier, embedded in the sea-floor silt, 16 hours after launching. Although kaitens have two escape hatches, these may only be opened above water. Underwater, the water pressure clamps them closed. A kaiten contains enough air for about 10 hours – with two pilots, this time was halved. They ensured their sacrifices were not in vain by writing 2000 kana of technical data and observations, pertaining to the fatal malfunction. When their paper was used up, they scratched words on the cockpit wall with a screwdriver. We just returned from their cremation ceremony. Ens Nishina has sworn to carry the ashes of Kuroki aboard his kaiten when he meets his glory. The atmosphere on the base is one of mourning, obviously, but tempered with a determination that the lives of our brothers shall not be lost in vain. My own heart was burdened with guilt. I begged a private audience with Commandant Ujina and told him about how I felt a special responsibility to Higuchi’s soul. Cmdt Ujina promised to consider my request that I be included in the first sortie of kaiten attacks.
9th August
Weather extremely hot. Forgive the long silence, Takara. Training has swung into full gear, and finding even ten minutes to sit down with my journal during the day has been impossible. At night, I am asleep as my head touches my pillow. I have wonderful news. During the morning roll-call, the names for the first wave of kaiten attacks were announced and ‘Tsukiyama’ was among them! Kikusui is our unit emblem. This is the floating chrysanthemum crest of Masashige Kusunoki, champion of Emperor Godaigo. Kusunoki’s 700 warriors withstood an onslaught of 35,000 Ashikaga traitors at the Battle of Minatogawa, and only after sustaining 11 terrible wounds did he commit seppuku with his brother, Masasue. The symbolism is obvious. We are the 700. Our devotion to our beloved emperor is ultimate.
Four fleet subs will each transport 4 kaitens. I-47, captained by the Lt-Cdr Zenji Orita, will carry Ens Nishina, Sato, Watanabe, and Lt Fukuda. I-36 will carry Lt Yoshimoto and Ens Toyozumi, Imanishi and Kudo. Aboard I-37 will be Lt Kamibeppu and Murakami, and Ens Utsunomiya and Kondo. I-333, captained by Cpt Yokota, will transport Lts Abe and Goto, and Ens Kusakabe and Tsukiyama Subaru. After the announcement we were reallocated dorms, so members of the same sortie can sleep in the same room. I-333 is on the second floor, at the end, overlooking the rice terraces. At night the croaking of frogs drowns out the foundries. I remember our room in Nagasaki.
12th August
Weather cool and calm. Sea as smooth as Nakajima river where we sailed our model yachts. Today I will write about our training. After breakfast we divide into Chrysanthemums and Drys. Because there are only 6 kaitens available for training, we are given priority practice privileges. At 0830 we proceed through the tunnel to the kaiten pier. After boarding, a crane lowers us into the sea. Usually we sail two to a cockpit. Of course, we have no room, but this doubling up helps to save fuel, and ‘a drop of petrol is as precious as a drop of blood’. Our instructor knocks on the hull, and we knock back to show we are ready to embark. First we run through a series of descents. Then we solve a navigation problem, using a stopwatch and gyrocompass. We locate a target ship, and simulate a hit by passing under the bow. One must be careful not to clip the upper hatch on the keel – two kaiten pilots died in Base P this way. We also dread being stuck in silt, like Sub-Lt Kuroki and Lt Higuchi. If this misfortune occurs, one is supposed to blast compressed