Before you start to lvl your crew in medium lvls think about what sailors you have and what base.
AXIS
You know if you go for BB you need 14 sailors (check do you have 11 accurasy/11reload gunners? Is the minimum)
2nd check do you have more than 5 engineers? because 5 are the minimum. Are they base 12?
3rd do you have 3 repairers base 12?
4th BO pot 15?
5th aaw gunners? base 11reload/11aaw (minimum)
6th do you have 1 scout (check if he is base 11 the minimum)
ALLIES
You know if you go for BB you need 14 sailors (check do you have 11 accurasy/11reload gunners? Is the minimum)
2nd check do you have more than 5 engineers? Are they base 12?
3rd do you have 5 repairers or 4 repaires+1restorer base 12?
4th BO pot 15?
5th do you have 1 scout (check if he is base 11 the minimum)
and the most important is. Do you have Euros or $$? If not return to pacman and get your real life back.
2nd OPTION
Neuts for a perfect BB5 crew and how to class them
UK:
1 x Pot 15 => BO
2 x 11 / 11++ => ACC. Gunner
7 x 11 Rep / 12 Eng => Engineer
3 x 11 Rest / 12 Rep => Repairer
1 x 12 Aircraft => Scout
US(with AAW):
1 x Pot 15 => BO
2 x 11 / 11++ => ACC. Gunner
2 x 11 / 11++ => Rel. Gunner (AAW)
5 x 11 Rep / 12 Eng => Engineer
2 x 11 Rest / 12 Rep => Repairer
1 x 12 Aircraft => Scout
US(without AAW):
1 x Pot 15 => BO
2 x 11/11++ = ACC Gunner
6 x 11 Rep / 12 Eng => Engineer
3x 11 Rest / 12 Rep => Repairer
1 x 12 Aircraft => Scout
IJN:
1 x Pot 15 => BO
2 x 11/11++ => Gunner
2 x 11/11++ => AA Gunner(IJN Armament untill lvl 62-70, then DP Gunner)
5 x 11 Rep / 12 Eng => Engineer
2 x 11 Rest / 11 Rep => Repairer
1 x 12 Aircraft => Scout
RM:
1 x Pot 15 => BO
2 x 11 / 11++ => Rel. Gunner
8 x 11 Rep / 12 Eng => Engineer
2 x 11 Rest / 12 Rep => Repairer
1 x 12 Aircraft => Scout
SN:
1 x Pot 15 => BO
2 x 11 / 11++ => Rel. Gunner
8 x 11 Rep / 12 Eng => Engineer
2 x 11 Rest / 12 Rep => Repairer
1 x 12 Aircraft => Scout
KM
1 x Pot 15 => BO
2 x 11/11++ => Gunner
2 x 11/11++ => AA Gunner
5 x 11 Rep / 12 Eng => Engineer
2 x 11 Rest / 11 Rep => Repairer
1 x 12 Aircraft => Scout
AXIS
You know if you go for BB you need 14 sailors (check do you have 11 accurasy/11reload gunners? Is the minimum)
2nd check do you have more than 5 engineers? because 5 are the minimum. Are they base 12?
3rd do you have 3 repairers base 12?
4th BO pot 15?
5th aaw gunners? base 11reload/11aaw (minimum)
6th do you have 1 scout (check if he is base 11 the minimum)
ALLIES
You know if you go for BB you need 14 sailors (check do you have 11 accurasy/11reload gunners? Is the minimum)
2nd check do you have more than 5 engineers? Are they base 12?
3rd do you have 5 repairers or 4 repaires+1restorer base 12?
4th BO pot 15?
5th do you have 1 scout (check if he is base 11 the minimum)
and the most important is. Do you have Euros or $$? If not return to pacman and get your real life back.
2nd OPTION
Neuts for a perfect BB5 crew and how to class them
UK:
1 x Pot 15 => BO
2 x 11 / 11++ => ACC. Gunner
7 x 11 Rep / 12 Eng => Engineer
3 x 11 Rest / 12 Rep => Repairer
1 x 12 Aircraft => Scout
US(with AAW):
1 x Pot 15 => BO
2 x 11 / 11++ => ACC. Gunner
2 x 11 / 11++ => Rel. Gunner (AAW)
5 x 11 Rep / 12 Eng => Engineer
2 x 11 Rest / 12 Rep => Repairer
1 x 12 Aircraft => Scout
US(without AAW):
1 x Pot 15 => BO
2 x 11/11++ = ACC Gunner
6 x 11 Rep / 12 Eng => Engineer
3x 11 Rest / 12 Rep => Repairer
1 x 12 Aircraft => Scout
IJN:
1 x Pot 15 => BO
2 x 11/11++ => Gunner
2 x 11/11++ => AA Gunner(IJN Armament untill lvl 62-70, then DP Gunner)
5 x 11 Rep / 12 Eng => Engineer
2 x 11 Rest / 11 Rep => Repairer
1 x 12 Aircraft => Scout
RM:
1 x Pot 15 => BO
2 x 11 / 11++ => Rel. Gunner
8 x 11 Rep / 12 Eng => Engineer
2 x 11 Rest / 12 Rep => Repairer
1 x 12 Aircraft => Scout
SN:
1 x Pot 15 => BO
2 x 11 / 11++ => Rel. Gunner
8 x 11 Rep / 12 Eng => Engineer
2 x 11 Rest / 12 Rep => Repairer
1 x 12 Aircraft => Scout
KM
1 x Pot 15 => BO
2 x 11/11++ => Gunner
2 x 11/11++ => AA Gunner
5 x 11 Rep / 12 Eng => Engineer
2 x 11 Rest / 11 Rep => Repairer
1 x 12 Aircraft => Scout