Three Cruise lines this month announced revisions to their smoking policies

•  Carnival Cruise Lines: As of June 15, smoking in public areas is permitted only in dance clubs and designated areas of casinos and open decks on all its 23 ships. It is also allowed in jazz clubs on 13 of its vessels. Starting Dec. 1, the line will ban smoking fleetwide in all staterooms, though smoking still will be permitted on private balconies except for spa staterooms, which will continue to remain entirely smoke-free.

•  Princess: Starting with all cruises departing on or after Jan. 15, Princess Cruises will no longer allow smoking in staterooms or on balconies. Passengers will still be able to smoke in designated areas, including Churchill’s Cigar Lounge and portions of the disco, casino and open decks.

•  Holland America: Smoking in staterooms will be prohibited on sailings on or after Jan. 15, but will be permitted on stateroom verandas. Smoking is also banned in designated indoor public areas, but allowed in certain other designated venues, including open decks.