Yeah that's a valid point. Key to making my approach to fatigue work is that I always start the war in a type VII, which is large enough to accomodate 2 separate watches, each of which is large enough to fill every on-duty slot onboard, while the other rests. Indeed, each watch also has a handfull of spare crew, whom I use as the kernel of each watch's repair gang. When on-duty, these guys lurk in whichever of the engine rooms is unused at that point in time. The Type II simply isn't big enough to use this approach, making the No Fatigue model the sensible choice. As for the Type IX, I've never got far enough into a career to use one - what with my habit of reinstalling each time a cool new mod came out
- but I assume it would be big enough to use my Type VII method. If not, then it would be No Fatigue all the way