[mookiemookie]

I'm in the middle of "Neither Sharks Nor Wolves" by Timothy Mulligan and it points to the U-570 incident as the consequences of the shortened training schedule of u-boat crews. Losses were beginning to mount and the u-boat arm needed warm bodies. As far as U-570, the book said they were only together for two months before being pushed out on their first patrol.

Mulligan goes on to propose that Prien may have been lost at sea due to the inexperience of his crew. In order to make up for the shortfall of experienced men, veteran crews were being broken up and transferred to new boats. When Prien was sunk, he had none of the officers and only 7 of the original crew of seamen from the Scapa raid.