naval
https://gyazo.com/f13f903345d12bb72d08d457defe920f
source: Anime/Manga Discussion Thread - Off-Topic - World of Tanks official forum - Page 529
adjective
of, in, or relating to a navy or navies:
〖名詞の前で〗海軍の(→ military); 軍艦の; 海軍を有する
e.g. a naval officer
e.g. naval operations.
ORIGIN
late Middle English: from Latin navalis, from navis ‘ship’.