三さん等とう航こう海かい士しMeaningsNoun1. third mate; third officerKanji used三three等equal航navigation海sea士professionalComposed of三さん等とうthird classNoun航こう海かい(sea) voyage; navigation; sailing; passage; cruiseNoun士しpractitioner; specialist; professional; person (esp. one licensed in a certain profession); -er; -or; -ian; -ist; man (esp. one who is well-respected)Suffix