nauarchus, i, m. (less correctly nav-), = ναύαρχος,
the master of a vessel , Cic. Verr. 2, 5, 24, § 60; Tac. A. 15, 51; Inscr. Orell. 3615; 3624; Veg. Mil. 5, 2.
nauarchus ī, m , ναύαρχος, a ship-master, captain: sepultura nauarchi. ...
An Elementary Latin Dictionary