The ban on P&O Cruises’ Oceana, Ventura and adult-only Artemis will confine smokers to their cabin balconies and designated outside areas.
P&O Cruises managing director Nigel Esdale said: “Since Britain went smoke free in July 2007 the British public has become accustomed to being in a smoke free environment with 76 per cent of the general public supporting the ban.
“We hope that becoming smoke free will give all our passengers, especially children, a cleaner and more pleasant environment in which at enjoy their holiday on board.”