Ancient Two-Banked Warship With Two Decks of Oars
Puzzle 12 of Sailing Hard Pack
Question is: Ancient Two-Banked Warship With Two Decks of Oars
and the answer is: BIREME
Word Meaning:
BIREME — (historical, nautical) An ancient galley having two banks of oars, one above the other.
Definitions from Wiktionary.