[Niedowidek]

Even with perfect crew rotation crewmen get tired faster when moving on surface in bad weather. Several times I had a problem that one watch was too tired to keep going and the previous watch wasn't rested yet. Then I had to dive just to let people rest. And this means using your batteries and/or slowing you down which has impact on time of arrival to patrol zone, available battery charge etc.

Also if you have contact with enemy after long period of bad weather and your crew is more tired, i.e. less effective, it may seriously affect result of engagement.

I would like to preserve this uncertainty whether my crew will perform well or not so well (because of tiredness). Having perfect crew, with maximum abilities to hear contacts with hydrophone, reloading torpedoes all the time and such is not so fun for me. But manual crew rotation is not much fun either.