Also, the issue that some have already hinted at before -
27 crew on the boat (+captain). No wardroom (it is indeed simply missing). Forward compartment, which should house the largest portion of the boat's crew, is never used as crew quarters and only has 3 men in it.
I really wish we could have the boat filled up. Given that performance inside the boat is better than outside it and that there's plenty of small (not immersion-killing or even bothersome for me) clipping/"jumping" issues with the crew as it is, I would really petition for this to be fixed, perhaps optionally. Pull the bunks down except at battle stations, add the missing wardroom, put men in both. Sprinkle a couple more guys here and there. Add at least another man to watch. Voila, a full complement