三さん等とう海かい佐さじ字FuriganaAudioMeanings1nounlieutenant-commander (JMSDF)military›Specific rank in the Japan Maritime Self-Defense Force, equivalent to a lieutenant-commander in many navies.彼かれは昨さく年ねん、三さん等とう海かい佐さに昇しょう進しんした。Break this sentence down in the analyzerHe was promoted to lieutenant-commander last year.三さん等とう海かい佐さとして護ご衛えい艦かんの副ふく長ちょうを務つとめる。Break this sentence down in the analyzerAs a lieutenant-commander, he serves as the executive officer of a destroyer.