Click below to view a deck plan Deck 1 Deck 2 Lobby Mezzanine Promenade Deck 6 Deck 7 Deck 8 Deck 9 Lido Deck 11 Spa, WaterWorks & Sports Spa Serenity Carnival Horizon Stateroom Key Category Cabin Name 1AInside4AInside4BInside4CInside4DInside4EInside4FInside4GInside4HInside4IInside4JInside4SInside4TInside6AOceanview6BOceanview6LOceanview6MOceanview6SOceanview6TOceanview7CBalcony8ABalcony8BBalcony8CBalcony8DBalcony8EBalcony8FBalcony8GBalcony8PBalcony8SBalcony8TBalcony9BBalconyFAInsideFEOceanviewFJOceanviewFMBalconyFOBalconyFSSuiteGSSuiteHAInsideHEOceanviewHIBalconyHLBalconyHMBalconyHSSuiteJSSuiteOSSuitePTInsideSSSuiteSTSuite Deck 1 Deck 2 Lobby Mezzanine Promenade Deck 6 Deck 7 Deck 8 Deck 9 Lido Deck 11 Spa, WaterWorks & Sports Spa Serenity OCG Class Mainstream Carnival Horizon Year Built2018Year Last Refurbished-Capacity3,960 passengersTonnage133,500RegistryPanama