The Small Ship Cruise Glossary: Every Term, in Plain English

Small-ship and expedition brochures are full of jargon. This glossary explains the terms you will actually meet, in plain English, grouped by where they come up. Use it as a quick reference while you plan, or read it through once before your first voyage so nothing on the booking page catches you out.

Ship Types and Categories

Small ship. A vessel carrying roughly 900 guests or fewer. The label is about access and intimacy, not luxury alone.

Expedition ship. A small ship built for remote travel, with Zodiacs, a naturalist team, and often an ice-strengthened hull. See our Antarctica expedition cruise guide for how these work.

Yacht. A very small luxury ship, often under 100 guests, with a relaxed, club-like feel.

River ship (or longship). A long, shallow vessel built for inland waterways. It is capped in size by the locks and bridges it must pass.

Ice class (Polar Class). A rating, PC2 to PC7, for how much sea ice a ship can safely work. A lower number means a tougher ship. PC6 covers most summer polar voyages, while PC2 reaches the deep pack ice.

Cabin and Accommodation Terms

Stateroom. The standard word for a cabin.

Suite. A larger cabin, usually with a separate sitting area and the best service tier.

French balcony. A floor-to-ceiling window with a railing but no step-out deck. Standard on most European river ships.

Veranda. A true step-out private balcony.

Cabin category. The price tier of a cabin, set by size, deck, and view. Name the exact category when you book, not just "a room."

Guarantee cabin. A booking where you are promised a category or better, but the line picks the exact cabin later. It can save money and lose choice.

Single supplement. The extra a solo traveler pays to use a cabin priced for two. A few ships offer true single cabins with no supplement.

Dining and Onboard Experience

Open seating. You dine when and with whom you like, with no fixed table or time.

Specialty dining. A separate restaurant, sometimes with a cover charge, beyond the main dining room.

All-inclusive. A fare that bundles extras into the price. The exact list varies by line, so always check whether drinks, excursions, gratuities, and flights are in or out.

Butler service. A dedicated attendant for suite guests, standard on the luxury lines.

Itinerary and Routing

Embarkation and disembarkation. The days you board and leave the ship.

Sea day. A full day at sea with no port call. Common on ocean itineraries, rare on rivers.

Tender. A small boat that ferries guests ashore when the ship cannot dock. River ships almost never tender, because they tie up in the town itself.

Shore excursion. An organised tour ashore. On expedition ships the equivalent is a Zodiac landing or cruise.

Repositioning cruise. A one-way sailing as a ship moves between regions, often longer and better value.

Gateway city. The airport city where your voyage starts or ends, such as Ushuaia for Antarctica or Quito for the Galapagos.

Booking and Pricing Terms

Per-person, double occupancy. The standard way fares are quoted: the price for one person in a cabin shared by two.

Lead-in fare (or from-fare). The lowest advertised price, for the smallest cabin on the least popular date. Most cabins cost more.

Port charges and gratuities. Fees that may sit outside the headline fare. Ask whether they are included before you compare two voyages.

Wave season. The January-to-March stretch when lines run their best promotions.

Expedition-Specific Vocabulary

Zodiac. A rigid inflatable boat used to land guests and cruise among ice and wildlife. Our Antarctica Zodiac landings guide covers a day aboard one.

Wet landing and dry landing. A wet landing steps you off the bow into shallow water, so rubber boots are required. A dry landing puts you straight onto rock or a dock.

Naturalist. A trained guide who interprets wildlife and landscape, and who leads your landing group.

IAATO. The International Association of Antarctica Tour Operators, whose rules cap landings at 100 guests at a time and bar ships over 500 passengers from landing at all.

Drake Passage. The 500-mile stretch of open water between South America and Antarctica. Fly-the-Drake charters a flight across it so you skip the crossing.

ROV. A remotely operated underwater camera that extends wildlife viewing below the surface.

River-Cruise-Specific Vocabulary

Lock. A water elevator that raises or lowers a ship between river levels. Watching one work is part of the experience.

Low water and high water. River levels that, in extreme years, can force a ship swap or an itinerary change. A good operator manages this for you.

Ship swap. When low water blocks a stretch, guests move by coach to a sister ship on the navigable side, then continue.

Sun deck. The open top deck of a river ship, with the best castle-watching seats. See our river cruising versus ocean cruising comparison for the wider picture.

Operator and Industry Terms

Cruise line and operator. Used interchangeably, both meaning the company that runs the ship. We prefer "operator" in comparisons.

Charter. When one company books a whole ship from another, then runs it under its own programme.

Travel advisor (or agency). A specialist who books your voyage. We add cabin advice and a person who answers the phone. For an example expedition voyage, the Antarctic Wonders roundtrip from Ushuaia shows the kind of trip these terms describe, and the Best of the Danube shows the river equivalent.

Why Book Your Small Ship Cruise with Us

We are a small specialist agency, and we translate this vocabulary into the right ship for you every day. We add the cabin guidance, the itinerary read, and the person who picks up the phone before and during your trip.

Booking through us, you can also join the Small Ship Travel Loyalty Program, a four-tier program that pays members 2 to 5 percent back per booking, plus perks like cabin upgrades and concierge access. The credit builds across every cruise line we book.

Related Reading

• What Is an Expedition Cruise? The Complete Beginner's Guide: the format explained from scratch.
• River Cruising vs Ocean Cruising: the two main formats side by side.
• How to Choose the Right Cabin on a Small Ship: the cabin terms put to work.
• Antarctica Zodiac Landings Guide: the expedition vocabulary in action.