Adults only at sea
A handful of lines carry no children at all, which changes a ship more than any single amenity: no water park, no kids club, no school-holiday pricing, and a bar that stays quiet at four in the afternoon. These are the ships in the catalog that sail adults only.
Viking
Virgin Voyages
What this measure does not tell you
This is a line policy rather than a ship feature, so it moves as a fleet and not one ship at a time. Ships whose policy we have not confirmed are left out rather than assumed.
These lists rank the ships in our catalog, not every ship afloat. Ships whose figures we have not read off an operator document are left out rather than estimated.