Here are some Cruise Glossary Terms:

Bridge: The command control center and navigation center of a ship

Bulkhead: wall separating cabins or compartments on a ship

Amidships: In or toward the middle of the ship; the longitudinal center portion of the ship.

Astern: Abaft, or beyond the ship's stern

Beam: Width of the ship at the widest point

Bearing: Compass direction, usually expressed in degrees, from the ship to a particular destination or objective

Berth: Dock, pier or quay ;or, the bed or beds within the passengers' cabins

Bilge: Lowermost spaces of the ship's inner structure

Cabin: compartment or room on a cruise ship

Cabin Steward: The cabin stewards are the people who clean your cabin.

Cleat: Horizontal wedge-shaped device to which cables are made fast

Companionway: Interior stairway

Davit: A device for raising and lowering the ship's lifeboats

Debark: The act of leaving a cruiseship (similar to disembark)

Dock: A pier used by a Cruiseship to secure itself to the port.

Draft: Measurement in feet from waterline to lowest point of ship's keel

Ebb Tide: Flow of water

Even keel: The ship in a true vertical position with respect to its vertical axis

Fathom: Measurement of distance equal to six feet

Forward: Toward the fore or bow of the ship

Free port: A port or plate free of customs duty
and most customs regulations.

Galley: The ship's kitchen

Gross Registered Tonnage: Gross Register Tonnage represents the total internal volume of a vessel, with some exemptions for non-productive spaces such as crew quarters; 1 gross register ton is equal to a volume of 100 cubic feet (2.83 m³). This calculation is complex; a hold can, for instance, be assessed for grain (accounting for all the air space in the hold) or for bales (exempting the spaces between structural frames). GRT (gross registered tons) is now an obsolete term. Gross register tonnage was replaced by gross tonnage in 1994, under the Tonnage Measurement convention of 1969.

Helm: Commonly the ship's steering wheel, but more correctly the entire steering apparatus consisting of the wheel and rudder and their connecting cables or hydraulic systems

Hotel Manager: A hotel manager is a person who handles the everyday function and management of a hotel on a ship and duties also include housekeeping, restaurants, bars, and other services.

Hull: A hull is the body of a cruise ship. It is a central concept in floating vessels as it provides the buoyancy that keeps the vessel from sinking.    

Keel: A structural keel is a large beam which the hull of a ship is built around

Leeward: Leeward is the direction downwind from the point of reference. The side of the ship towards the leeward is its lee side. If the vessel is heeling under the pressure of the wind, this will be the "lower side".

Maître D': The maître d' (short for maître d'hôtel, literally "master of the hall") in a suitably staffed restaurant is the person in charge of assigning customers to tables in the establishment, and dividing the dining area into areas of responsibility for the various servers on duty. He or she may also be the person who receives and records advance reservations for dining, as well as dealing with any customer complaints and making sure all servers are completing their tasks in an efficient manner. In some localities or traditions the post is also known as the headwaiter or captain.

Prow: the fore part of a ship, the stem and its surrounding parts, hence used like keel, by metonymy, of the ship itself. It is often depicted in movies with carved figurehead in the form of a mermaid or other similar figure. Prow is often confused with the bow of the ship. In old naval parlance, the prow applied to the battery of guns placed in the fore gun-deck.In maritime terminology, "prow" also describes a small version of accommodation ladder used for boarding and disembarking a vessel.

Purser: On modern-day passenger ships, the purser has evolved into a multi-person office that handles general administration, fees and charges, currency exchange, and any other money-related needs of the passengers and crew. The Chief Purser often holds a rank equivalent to that of the Chief Officer (and wears the same three rank rings).

Shore excursion: Land tours on a cruise itinerary when visiting a port.

Sommelier: or wine steward, is a trained and knowledgeable wine professional, commonly working in fine restaurants or cruise ships, who specializes in all facets of wine service. The role is more specialised and informed than that of a wine waiter.

Starboard: Starboard is the nautical term that refers to the right side of a vessel as perceived by a person on board the ship and facing the bow (front). Note that starboard refers to a particular and unchanging side of a ship, and thus is not a synonym for "right", a direction which is completely observer-dependent; for example, an observer on board who is facing the stern would perceive starboard to be on his left, not his right. The starboard side of a vessel is indicated with a green navigation light at night.

Stern: The stern is the rear or aft part of a ship or boat.