Welcome Joe BoB!
For your question, It depends on what the station is doing, is what I noticed. As in, if it is one of the torpedo loading stations, more crewmen (from what I have studied when I have long, arduous patrols) means faster reloading. The fatigue system is extremely picky. I suggest getting GWX 3.0 gold when you can, and installing SH3 commander. In commander, you can set the fatigue system to either 2X slower fatigue or no fatigue at all.
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