Analysis of information sources in references of the Wikipedia article "灰背魚號潛艇" in Chinese language version.
U.S. Navy officials only found out the cause of Grayback’s sinking after the war, when translated Japanese wartime records noted a Nakajima B5N “Kate” bomber attacked a surfaced enemy submarine with a 500-pound bomb. The stricken submarine was then bombarded with depth charges.
|title=为空 (帮助)|title=为空 (帮助)U.S. Navy officials only found out the cause of Grayback’s sinking after the war, when translated Japanese wartime records noted a Nakajima B5N “Kate” bomber attacked a surfaced enemy submarine with a 500-pound bomb. The stricken submarine was then bombarded with depth charges.