Vocab InfoUnclassified Noun航海士(こうかいし)mate, navigation officerDetailsExamples航海士mate, navigation officerDetailsExamplesDictionary DefinitionNoun1. mate, navigation officerAll Forms航海士 【こうかいし】DetailsAudioPlayFrequencyAnime Top 22,300ExamplesThere are no sentences available for this contentHold tight, context sentences are coming soon!Self-Study SentencesStudy your own way!Add sentences and study them alongside Bunpro sentences.Try Bunpro