These are the nautical terms I found and their definitions have been taken from dictionary.com:
- Fathom: a unit of length equal to six feet (1.8 meters): used chiefly in nautical measurements.
- Shroud: any of a number of taut ropes or wires converging from both sides on the head of a lower or upper mast of the outer end of a bowsprit to steady it against lateral sway: a part of the standing rigging.
- Water-sprite: a spirit of the water. A superstitious belief in the spirits that inhabit the waters.
- Ribs: any of the curved framing members in a ship's hull that rise upward and outward from the keel; frame.