| Japanese|| 改<ref>In some situations, "Kai" ("remodel", ''改'') is called "Kai Ichi" ("remodel one", ''改一''). This is notably the cases for some [[SS#Trivia|submarine types]].</ref>|| 改ニ|| 改三|| 改四
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| Japanese (romaji)|| Kai|| Kai Ni|| Kai San|| Kai Yon
| Japanese (romaji)|| Kai|| Kai Ni|| Kai San|| Kai Yon