Interesting engraving showing a somewhat-outdated galley, which was the predominant type of naval warship used on the Mediterranean until the 16th century.
Use of the galley was extended into the early 18th century in certain naval theaters where they could outmaneuver larger fleets in coastal contexts. However, they had previously seen their hey-day on the Mediterranean, having been around since Roman times. They were replaced by sailing vessels which could carry larger complements of guns in open waters.
The image shows two men per oar on each side of the ship. Various constructions are shown and annotated. Two different anchor structures are depicted.
The engraving appeared in Diderot's monumental Encyclopedie. The engraving is based on an earlier depiction by Nicholas Bellin, the primary cartographer for the French Navy.