| Aboard | On the ship. Opposite of ashore. |
| Abreast | When two vessels are side-by-side; along side |
| Aft | Toward the back of the boat |
| Amidships | In or toward the middle of the ship. |
| Ashore | On shore. Opposite of aboard. |
| Astern | In back of the boat, opposite of ahead. |
| At Anchor | When the ship is anchored offshore |
| Balcony | A private seating area on the outside of your stateroom |
| Beam | The beam of a ship is its width at the widest point, or at the mid-point of its length. |
| Bearing | The direction of an object from one's own vessel |
| Berth | Dock, pier or quay (key); or, the bed or beds within the guests' staterooms |
| Board | To come onto a ship. |
| Bow | The front of the ship. |
| Bridge | An upper deck where a ship is steered and the captain stands |
| Brig | A compartment that serves as a jail aboard the ship. |
| Bulkhead | An interior wall in a vessel. |
| Cabin | Passenger room on a ship. |
| Chair Hog | Leave their belongings on deck loungers and walk away. |
| CHOGS | Short for chair hogs |
| Course | Ship's desired direction of movement. |
| Debark | Disembark: go ashore; "The passengers disembarked at Port Canaveral" |
| Debarkation | Disembark: go ashore; "The passengers disembarked at Port Canaveral" |
| Deck | Floor of the ship. |
| Deck Lounger | Deck chair available for you as a passenger. (Unless a chair hog came by before you) |
| Departure | When your ship leaves a port. |
| Disembark | Go ashore; "The passengers disembarked at Port Canaveral" |
| Docs | This is the information (tickets etc..) you get from the cruiseline after booking your cruise. |
| Draft | The vertical distance between the waterline and the bottom of the hull |
| Draught | The depth of water needed to float a ship. |
| Embark | The process of boarding a ship |
| Embarkation | The process of boarding a ship |
| Galley | Kitchen. |
| Gross Tonnage | Is a measure of the total internal volume of the ship |
| Guarantee Cabin | This is a booking for a stateroom within a certain category, without knoving the stateroom number at the time of booking. |
| Hawseholes | Either of the holes in a ship's bow through which a hawser or anchor cable is passed |
| Hull | A hull is the body of a ship |
| Inside Cabin | A cabin without windows and waterview |
| Keel | A large beam along the underside of a ship's hull from bow to stern |
| Knot | Knot is a unit of speed, equal to one nautical mile per hour. |
| Leeward | Away from the direction from which the wind is blowing. Opposite of windward |
| MaƮtre d' | Head waiter |
| Muster Drill | The purpose of a muster drill is to prepare passengers for safe evacuation in the event an emergency occurs while on board the ship |
| Nautical Mile | A linear measurement of distance equivalent to one minute of latitude or approximately 1.15 miles |
| Ocean View Cabin | Cabin with windows/porthole and waterview |
| Onboard Credit | Money deposited by the cruiseline to your onboard account. |
| Outside Cabin | Cabin with window(s)/porthole(s). Can have balcony as well. |
| Pilot | A person qualified to guide ships through difficult waters going into or out of a harbor |
| Port | Port is the nautical term that refers to the left side of a ship, as perceived by a person on board the ship and facing towards the bow |
| Port of Call | Any port where a ship stops except its home port |
| Porterage | Baggage-handling service |
| Porthole | A porthole is a small, generally circular, window used on the hull of ships to admit light and/or air |
| Purser | Officer on a ship responsible for accounts, papers and services relating to passenger |
| Roll | Sway from side to side; "The ship rolled on the heavy seas" |
| Stabilizer | Fins mounted beneath the waterline to prevent rolling of a ship |
| Starboard | Right side of a vessel as perceived by a person on board the ship and facing the bow |
| Stateroom | Cabin |
| Stern | Aft part of a ship |
| Suite | Usually a larger size stateroom |
| Tender | A boat used for transportation between a ship and shore |
| Wake | Turbulence in the water behind a ship |
| Waterline | The line formed by the surface of the water on the hull of a ship when she is afloat |
| Windward | Toward the direction from which the wind is coming.. Opposite of leeward |
I'll be happy to add suggestions to the list. Enjoy!