Built by Mitsubishi built between 1931-1939. Delivered to the Imperial Japanese Army (IJA) as Type 89B Otsu Yi-Go serial number unknown. Assigned to the 4th South Sea Garrison Unit formed at Wakayama on June 26, 1943.
This tank was transported from Japan via Truk to Rabaul then loaded aboard the Bunsan Maru as one of four tanks unloaded at Tarlena on northwest Bougainville in September 1943. After the American landing at Torokina on November 1, 1943 this tank was carefully concealed. In July 1944, the tanks were assigned to the 38th Independent Mixed Brigade.
This tank remained at Watego Plantation (unsure of spelling) 'in situ' until the early 1980s. Purchased by the Kieta Lions Club from land owner Oscar Bond for a pig and a ceremony to release its spirit. The land owner did not want to sell the gun barrel, and kept it.
During the middle 1980s, transported to the Kieta Memorial Park by Bob Strong aboard a Rabaul stevedores low loader and transported to Kieta and installed on two concrete pads at the Kieta Memorial Park. When unveiled, painted tan with a Japanese flag on the sides of the hull. The exterior has little structural damage and minimal
shrapnel damage. The track protectors appear to
have been removed, leaving both
metal tracks exposed. The main gun is missing and replaced with a faux gun barrel. Inside, the engine is removed.
Senshi Sosho Vol. 58, Page 164-165
Thanks to Steven Turner and Akira “Taki” Takizawa for additional information
After The Battle Issue 147 "The Japanese Tanks of Bougainville" by Justin Taylan
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May 30, 2019