Crew ratings
 

I cannot seem to find what the crew stats actually mean, what stat is important for what station, ect. What dose it all mean?

in the office you can select new crew members by skill,specialization and so on.on the right of each crewmember you see the amount of skill he has in the chosen option.

once on board you shouls balance each station so some are good in the main job(specialization),commanding that team and some have skills(revieled when klicking a crewmember)who can be used for possible damagecontrol and/or possible replacecement of crewmembers in other stations.

in each station and 8hour-shift preset the ranks from high to low(easy to find out who is the best for the job)and also station-related skilled people the most left at each station.

about your question:
specializations
torpedo>torpedoroom
command>bridge
engines>machine-room
watch>deck watch
sensors>conning tower
guns>deckgun and AA

skills can be related also on the station,so a guy with electric skill is of use in the conning tower and bridge.
repair-man can be used everywhere and so on
The dammage control team should best be balanced to react on damage in every station(men whit different skills!)

For the rest be sure they do not hide too much booze in their cabin....

I've noticed that high GUNS affects Torpedo efficiency, mechanical affects Command efficiency and watch affects sensors efficiency.