Commencing fire at "any and all planes which passed within a reasonable distance of the nest" "Zane" began preparations at 0803 for getting underway, as belting and ammunition supply parties turned to. At 0830, "Zane" spotted a "strange submarine" 200 yards astern of , anchored in nearby berth K-23. "Zane's" position in the nest, however, rendered her incapable of opening fire with her after 4-inch gun: her aim was fouled by "Perry" (DMS-17), moored outboard. However, soon made the whole problem academic at 0840, when she charged down upon the Japanese type "A" midget submarine and destroyed her by ramming and with depth charges.