Maru-yu No. 1 and No. 3 encountered mechanical failures as soon as they set sail, and had to be towed back to obtain spare parts. Maru-yu No.2 pressed on to within 60km of her destination... Ormoc Bay. However, 4 American destroyers caught up with her.

I can't submerge!! But Maru-yu is part of the Imperial Army!!

I will choose to die on the surface! This place will do!!

Maru-yu fights with a modified 37mm tank cannon. The American destroyers close to 45m beside Maru-yu and let loose with 40mm autocannons. Maru-yu No. 2 explodes and sinks.