Ship words: cruise terminology guide
The nautical terms and cruise industry vocabulary of the daily ship program and public-address system, translated into plain English.
Finding your way
Bow and stern
The front (bow) and the back (stern) of the ship. Signs on board commonly direct you forward (toward the bow) or aft (toward the stern).
Port and starboard
The left (port) and right (starboard) sides of the vessel when facing forward toward the bow. An easy way to remember: "port" and "left" both have four letters.
Midship
The central section of the ship between the bow and stern. This is the ship's fulcrum and experiences the least movement in heavy seas.
Deck
A floor or level of the ship. Decks are numbered sequentially from bottom to top, with higher numbers representing upper outdoor pool and sun decks.
Lido deck
The resort deck of the cruise ship, usually hosting the outdoor swimming pools, hot tubs, casual buffet marketplace, soft-serve ice cream, and poolside bars.
Gangway
The ramp or enclosed bridge connecting the ship's passenger portal to the pier terminal. Your stateroom card is scanned here every time you leave or re-board the vessel.
Bridge
The navigational command center located high forward on the ship, where the captain and maritime officers steer the vessel and monitor radar.
Your reservation
Stateroom or cabin
Your private bedroom and bathroom aboard the ship. The terms are interchangeable in modern cruising.
Berth
Either a bed inside a stateroom (e.g., "a four-berth cabin" sleeping four guests), or the physical pier where the ship ties up in port.
Guarantee stateroom (GTY)
A discounted fare where you choose the category (e.g., Balcony Guarantee) and the cruise line assigns your exact stateroom number closer to departure. See how to choose a stateroom.
Single supplement
The additional charge assessed when a solo traveler books a stateroom designed and priced for double occupancy.
Closed-loop cruise
A cruise itinerary that embarks and disembarks from the exact same United States port (e.g., Miami to Bahamas and back to Miami). U.S. citizens on closed-loop sailings enjoy flexible document rules under the Western Hemisphere Travel Initiative (WHTI).
Boarding and disembarking
Embarkation and debarkation
Embarkation is the process of checking in at the terminal and boarding the vessel on Day 1. Debarkation (or disembarkation) is exiting the ship at the end of the cruise.
Muster drill (e-muster)
The mandatory maritime safety briefing required by international law before sailing. Guests watch a short safety video on their phone or cabin TV and report to their assigned muster station to have their keycard scanned.
All aboard
The mandatory cutoff time by which all passengers must be back on board the ship before departure. It is typically 30 to 45 minutes prior to scheduled sailing.
Tender
A small vessel or water taxi used to transport passengers between the anchored cruise ship and shore in ports where harbor waters are too shallow for docking (such as Cabo San Lucas or Grand Cayman).
Port agent
The cruise line's local onshore representative in each port of call. Their direct phone number is printed on the daily ship program; they are the contact to call if an emergency arises ashore.
At sea
Sea day
A full day spent sailing at sea with no scheduled port calls, dedicated to enjoying shipboard entertainment, dining, and pool decks.
Knot
A maritime unit of speed equal to one nautical mile per hour (approximately 1.15 statute miles per hour or 1.85 kilometers per hour). Cruise ships typically cruise at 18 to 22 knots.
Nautical mile
The standard unit of distance on water, based on the circumference of the earth and equal to one minute of latitude (1,852 meters or approximately 6,076 feet).
Stabilizers
Computer-controlled hydrodynamic underwater wings that extend horizontally from the hull beneath the waterline, counteracting rolling swells and reducing vessel movement by up to 90%.
Swell
Smooth, undulating ocean waves generated by distant weather systems. Swell, rather than local surface wind, is the primary source of vessel movement.
Wake
The churning trail of white water and rolling foam left behind the stern as the ship cuts through the sea.
On board
Guest Services
The 24-hour reception desk on board, assisting with stateroom keys, billing statements, lost items, and general questions.
Sail & Sign / SeaPass card / Medallion
The magnetic plastic keycard or wearable smart medallion that acts as your stateroom door key, on-board charge card, and boarding identification at the gangway. Ocean cruise ships operate on a 100% cashless payment system.
Daily program
The comprehensive daily schedule of meals, theater shows, live bands, deck activities, and port operating hours delivered to your stateroom or published on the cruise line's smartphone app.
Gratuities (Crew Incentive Fees)
Daily tips pooled and distributed to stateroom stewards, dining room waiters, buffet staff, and galley teams, typically billed as a fixed daily charge per guest ($16 to $20/day).
Galley
The professional commercial kitchen on board where meals for thousands of passengers are prepared by master chefs.