Changes

** Amount of SS(V) = 0

** Amount of SS(V) = 0

*** If amount of SS(V) ≥ 1, then amount of AS ≥ 1

*** If amount of SS(V) ≥ 1, then amount of AS ≥ 1

** Amount of historical Rei-go ship ≥ 2?/3?/4/6 ('''Casual / Easy / Medium / Hard''')

** Amount of historical Rei-go ship ≥ 1/3?/4/6 ('''Casual / Easy / Medium / Hard''')

** Amount of DD ≥ 3/4?/4/6 ('''Casual / Easy / Medium / Hard''')

** Amount of DD ≥ 3/4?/4/6 ('''Casual / Easy / Medium / Hard''')

** If Yamato-class ships ≥ 1, then fleet contains at least 2CL ?DD *

** If Yamato-class ships ≥ 1, then fleet contains at least 2CL ?DD *