On 29 September 2026, around 7:00 a.m., a burst water line caused hot, steaming water to flood a carpeted passenger corridor aboard Royal Caribbean’s Harmony of the Seas during the fourth day of its five-night Western Caribbean cruise.
The flooding affected only two staterooms near the corridor and was captured on video by a passenger who posted it on Facebook. The water was hot enough to produce visible steam, though no injuries or burns were reported.
Crew members contained the damage and completed cleanup and initial repairs within approximately two hours, removing carpet and deploying industrial drying fans in affected
cabins. Passengers in the flooded rooms were relocated during restoration, which prevented any delays to the ship’s itinerary.
Harmony of the Seas departed Port Canaveral, Florida, on 26 September 2026, called at Perfect Day at CocoCay on 27 September, and was approaching Cozumel, Mexico, when the incident occurred. The cruise was scheduled to return to Port Canaveral on 1 October 2026.
Weighing 226,963 gross tons, Harmony of the Seas is the world’s largest cruise ship since entering service in 2016. The vessel features 16 passenger decks, a guest capacity of 5,697, and complex plumbing systems including freshwater, greywater, and heating/cooling
lines.
Other Royal Caribbean ships faced similar water line failures in 2026: Allure of the Seas in July and Quantum of the Seas in August experienced flooding due to burst pipes. Industry-wide, maintaining large cruise ships’ plumbing under marine environmental stresses remains a significant operational challenge.
Royal Caribbean has not issued a public statement on the flooding. Cruise Hive quoted an unnamed passenger: “There’s a busted line on Harmony of the Seas. This isn’t a common occurrence, and the crew is handling it really well.” Another guest reported, “Less than two hours after the flooding on Harmony of the Seas,
the carpet has already been pulled up in the affected room.”
Burst pipes and flooding incidents have been documented across multiple cruise lines, including Royal Caribbean, Princess Cruises, MSC Cruises, and P&O Cruises during 2025-2026. Ships operate extensive pipe networks under varying pressures, facing wear from salt air and vibrations. Despite rigorous maintenance programs, isolated failures require prompt crew action to minimize passenger impact and itinerary disruption.
