barracuda is right
nebraska = iowa and yamato server
kaiser = nelson and bismark server
and i don't know whats the older name of each server cause just started here almost 1 year, but i do remember i got older account, i think it was from new york server -.- or i forgot,
and if you can't find your ship in both server, try to send ticket to reactivate your account due to your long inactivity, rest assured that if you got prem ships or other prem stuff it will be safe...