Dictionary/海戦かいせんKaisen海戦 (Kaisen) is a Japanese noun meaning “naval battle”.Meaningsnounnaval battleKanji in 海戦海sea戦warRelated words戦うto make war (on)海sea戦war作戦tactics戦争war海外foreign海豚dolphin (or other small toothed whales, incl. porpoises, belugas, etc.)海老prawn北海道Hokkaido (island, prefectural-level administrative unit)戦地front (in battle)挑戦challenge戦場battlefield