The Tenth And Last Mission
Let us look at the facts, shall we? The Grayback left Pearl Harbor on a combat patrol on January 28th, 1944. This was its tenth mission, but it turned out to be its last one as well. The sub sent word back to base on February 24th. Its report said that it had sunk Japanese freighters called Taikei Maru and Toshin Maru. On top of that, it reported that it hit two more. This was not yet the last time they heard from it.
The Tenth And Last Mission
The Following Day
The sub had a new report the following day, saying that the craft seriously damaged a Japanese troop carrier called Asama Maru. It also sunk Nanpo Maru. After all these attacks, the Grayback only had two torpedoes left. This is why it went to Midway Atoll to resupply. Sadly, the craft did not make it there.
The Following Day