: Smoking is not permitted anywhere inside any of the ships. Smoking is only permitted on the Sun Deck.
American Cruise Lines
: Smoking is not allowed, period.
American Queen Steamboat Company
: Smoking is permitted only in designated outside areas aboard the American Queen
. All interiors of the vessel including all cabins, staterooms, dining rooms and lounges are strictly non-smoking.
: In Europe and in South America, all ships have non-smoking interiors. Smoking is only permitted on the Sky Deck. On vessels in China smoking is limited to certain areas of the ship. On the Mekong river smoking is permitted on the Mekong Deck by the Galley.
: Smoking not allowed in any interior areas. Only allowed in designated outside area.
Grand Circle Cruise Line:
No general smoking policy is listed on their website. It depends on the ship although smoking in cabins seems to be banned fleet-wide.
Tauck River Cruises
: No general smoking policy is listed on their website but smoking appears to be banned inside their vessels and only allowed on designated areas of the sun decks.
: Uniworld has a very detailed, destination-specific smoking policy that is too cumbersome to summarize. Go to the link and enter 'smoking' in the search box.
Viking River Cruises
: All Viking ship interiors, staterooms and verandas are nonsmoking. Each ship has an outdoor smoking area, generally on the sun deck.