28 July 1945:

Philippine Sea, 300 miles N of Palau. At0530, I-58 is forced down by a radar-equipped airplane. After 1400 Hashimoto sights a large tanker, escorted by a single destroyer. At 1431, kaiten No. 2, piloted by FPO1C Komori Kazuyuki is launched against the tanker, followed Lt(jg) Ban Shuji's No. 1, targeting the destroyer, at 1443.

I-58's target is the 6,214-ton armed cargo ship WILD HUNTER (ex-EXPOUNDER), en route to Manila. At 1620 (local) WILD HUNTER's lookouts sight a periscope at 10-25N, 131-45E. Twenty-eight minutes later another periscope is spotted. The cargo ship engages the attacker with his 3-inch gun, maneuvering radically to present a smaller target. After several shots the periscope disappears.

Aboard I-58, two explosions are heard at 1520 and 1530, but a rain squall prevents Hashimoto to verify the results of his attack. After surfacing his radar detects no targets in the vicinity. He later reports both ships as sunk. I-58 heads SE, to the intersection of the Leyte-Guam and Palau-Okinawa routes.

http://www.combinedfleet.com/I-58.htm