I really hope the crews aren't altered from what's shown in "Ships_init.c". I'm using crew size as one of the factors in the promotion reward ships, and I'm trying to arrange that each time you are promoted you get a ship which is in some way better than the previous one. If you have a ship with a lower crew (e.g. a corvette with 30 guns of 12lb and a nominal crew of 288) and receive a ship with a larger crew (e.g. a Rossiya frigate with 36 guns of 12lb and a crew of 378), except that the smaller ship gets its crew boosted (e.g. maybe that corvette ends up with a crew of 400), then the new ship is hardly if any better, possibly worse (similar or smaller crew than the corvette, not many more guns, bigger therefore probably less agile).