| Term | Definition |
|---|---|
| deck | Horizontal or cambered and sloping surfaces on a ship, like floors in a building. |
| deckhouse | A low building or superstructure, such as a cabin, constructed on the top deck of a ship. |
| main deck | The principal deck of a ship. In ships with multiple decks, the deck beneath the spar deck. |
| spar deck | The upper deck running a ship's full length. In a sailing vessel, the upper deck from which sails, rigging and spars are controlled. |
| weather deck | The uppermost deck of a ship; any deck that does not have overhead protection from the weather. |