[TorpX]

Originally Posted by arrow

I would like to ask if it is an error or is it normal - After my third and very successful patrol early in the war (TMO+Small Patch, February 1942) in a Porpoise where I sunk 27 000 tons (all were enemy ships, all objectives fulfilled) I came back to Subaraya port. My Hull was damaged to 86% and instead big promotions I was given only the option to end my career or to be given a new command. ...

I can't comment on how TMO decides to reward/punish you as Captain, but here are a couple real-life things to consider:

A boat with 86% damage could only be considered a total write-off; it would never be sent on patrol again, and, imo, at that level, could not even be used as a training boat.

In the first months of the war, the USN sub commands had few new boats to hand out. They had to use what they had. Later, when numbers of new fleetboats were arriving, all the S-class were withdrawn from active service, but that could not be done in the crisis period.

I wouldn't consider any new command to be a "punishment". If you were judged to be a poor skipper, your next command would be a supply ship, or even a desk.