| Definition | Term |
| The central structural basis of the hull. | |
| Unit of speed equal to one nautical mile per hour. | |
| A unit of length, normally equal to three nautical miles. | |
| The vessel's angle of lean or tilt to one side. | |
| To secure a vessel to a buoy or a pier. | |
| The left side of the vessel looking forward | |
| The system of masts & lines on sailing vessels. | |
| The captain of a ship and Gilligan's friend. | |
| A sudden, violent wind often accompanied by rain. | |
| The right side of the vessel when looking forward. | |
| The rear part of a ship. | |
| A vessel's motion rotating about the vertical axis e.g. from side to side. | |