Categories: The cabin classes divide the ship into four different classes with different specifications, but we go even more fine-grained than this. The average cruise ship features about 25 cabin categories. Each cabin category contains different sub-categories to precisely differentiate room types.

Cruise ship "categories" refer to the specific type and location of a stateroom, and they determine the price you pay for your voyage. In 2026, most ships use a hierarchical lettering or numbering system within four main buckets: Inside (no window), Oceanview (porthole or window), Balcony (private outdoor space), and Suite (extra square footage and perks). Within these buckets, categories are further refined by location; a "category 4A" might be an inside cabin on a lower deck, while "4J" might be the same size but on a higher deck or in a more desirable mid-ship location. Generally, cabins located "mid-ship" and on higher decks are in higher categories (and thus more expensive) because they offer the smoothest ride and quicker access to amenities. Furthermore, some categories include "obstructed views" (where a lifeboat might be in the way) or "guarantee" status, where you pay a lower rate in exchange for the cruise line picking your specific room number later. Understanding these categories is key to balancing your budget against your preference for views and proximity to the ship's action.