Save Type Surname Usage Japanese Scripts 海部(Japanese Kanji) Pronounced Pron. /kai.ɸɯᵝ/ [key·simplify] Meaning & History Combination of the kanji 海 (kai, "sea, ocean") and 部 (bu, "division, section"). A famous bearer of this surname is Japanese Prime Minister Toshiki Kaifu (海部 俊樹; b. 1931).