Bireme
An ancient galley with two banks of oars is called a bireme.
slave ship
Bireme
A vessel with two tiers of oars was/is a bireme.
A bireme is an ancient galley with two banks of oars, one above the other.
Trireme
ancient type of ship driven by oars
ancient type of ship driven by oars
galley
An ancient vessel with two banks of oars was called a bireme.
An ancient ship with two banks of oars is called a "bireme".
Trireme. The joys of The Sun crossword.