well one is that i didn't know that uk was soo sucky at sub
two so that my uk crew can gain exp on my us ships
three i wanna try other nations
four i wanna have fun

*****

1) UK subs are really just tanks, take higher level supports and some planning when you
raise the crew but the UK national Rep/Res bonuses help to get the UK subs SD/Rep rate up.
They do not have the firepower of the IJN ones nor the proxy of KM though.
2) Crew will gain exp on any nations ships. However mixed nation gunners will not work,
mixed nation BOs, Scouts, etc will not.
3) I did every nation but SN, and stopped MN around 70+. This game gets a bit dull
playing only one nation especially as you start aquireing each of the BB6s.
4) What fun to you is up to you. For me it got to just FL and HA, not new nations.

well one is that i didn't know that uk was soo sucky at sub
two so that my uk crew can gain exp on my us ships
three i wanna try other nations
four i wanna have fun

Maybe someone could elaborate on why he should choose those other nations
instead of UK for sub? I cant answer that question, as I only played a sub 2 times
(IJN). I havent touched it since.

ofcos i would still want my us ships . . Its that i wanna try other
nations . . But i already appointed my crew to UK . . Any way can
my UK crew gain exp on my us ships?

Dont go UK for sub, try KM IJN or MN first. If you go UK, BB is their strong suit.

By switching do you mean stop playing your US ships and start playing UK ships ? You
can play other nations just to get a feel of their play style and break the tedious grind.
Almost everybody playing NF have more than 1 nation IMO. I myself have got all the
nations except SN. If you really wana try sub, then go KM or IJN. Good Luck.