Oasis class · Royal Caribbean · In service since 2016
Harmony of the Seas
Harmony of the Seas is an Oasis class cruise ship operated by Royal Caribbean, in service since 2016. At about 226,963 gross tons, it carries roughly 2,200–6,687 guests and ranks #7 by size in the 30-ship Royal Caribbean fleet we cover.
- 226,963 gross tons
- 2,200–6,687 guests
- 1,188 ft long
Photo: Michiel1972, CC BY-SA 4.0, via Wikimedia Commons
Ship facts
- Cruise line
- Royal Caribbean International
- Ship class
- Oasis class
- Entered service
- 2016 (10 years ago)
- Gross tonnage
- 226,963
- Guests
- 2,200–6,687
- Length
- 1,188 ft (362.1 m)
- Beam (width)
- 156 ft (47.4 m)
- Speed
- 22 knots
- Builder
- Chantiers de l'Atlantique
- Flag
- The Bahamas
- IMO number
- 9682875
About Harmony of the Seas
Harmony of the Seas, the third Oasis-class ship, entered service in 2016 and debuted the Ultimate Abyss, the dry slide that plunges from the top deck toward the Boardwalk. It also brought a trio of Perfect Storm waterslides and the Bionic Bar, where robotic arms mix your cocktails. Like its sisters, Harmony splits its space into neighborhoods, so Central Park’s trees and quiet cafés sit a few decks above the lively Royal Promenade. Wonderland, the whimsical specialty restaurant, sits alongside more familiar choices like Chops Grille. It’s a strong pick for families and groups who want big-ship variety on a Caribbean week.
Best for: Active families and friend groups who want slides, shows and lots of dining choice on a classic Oasis-class ship.
Harmony of the Seas highlights
- The Ultimate Abyss, the dry slide that made its debut on this ship
- Perfect Storm waterslides: Typhoon, Cyclone and Supercell
- Bionic Bar with robotic bartenders
- Wonderland, an imaginative specialty restaurant
- AquaTheater diving and acrobatic shows
How Harmony of the Seas compares in size
- Icon of the Seas248,663
- Star of the Seas248,663
- Legend of the Seas248,663
- Utopia of the Seas236,473
- Wonder of the Seas235,600
- Symphony of the Seas228,081
- Harmony of the Seas226,963
- Oasis of the Seas226,838
- Allure of the Seas225,282
- Odyssey of the Seas169,379
- Spectrum of the Seas169,379
- Ovation of the Seas168,666
- Anthem of the Seas158,350
- Quantum of the Seas158,350
- Independence of the Seas155,889
- Freedom of the Seas154,407
- Liberty of the Seas154,407
- Navigator of the Seas139,999
- Mariner of the Seas139,863
- Voyager of the Seas138,194
- Explorer of the Seas138,194
- Adventure of the Seas137,276
- Radiance of the Seas90,090
- Brilliance of the Seas90,090
- Serenade of the Seas90,090
- Jewel of the Seas90,090
- Enchantment of the Seas82,910
- Rhapsody of the Seas78,878
- Vision of the Seas78,717
- Grandeur of the Seas73,817
Gross tonnage measures a ship's enclosed volume, not its weight. Source: Wikidata.
Oasis class sister ships
Sailing with Royal Caribbean
Royal Caribbean is the big-ship, high-activity line: surf simulators, water slides, ice rinks and Broadway shows on some of the largest cruise ships ever built. It suits families, groups and active couples who want a floating resort and a private-island beach day, and it’s less suited to anyone who wants quiet, small ships or an all-inclusive fare.
Read our full Royal Caribbean guide: dining, drinks, tipping and who it suits →
Harmony of the Seas FAQs
How big is Harmony of the Seas?
Harmony of the Seas measures about 226,963 gross tons and is about 1,188 feet (362 m) long. That makes it #7 of 30 Royal Caribbean ships we cover by tonnage, and #7 among all 255 ocean cruise ships in our guide.
How many passengers does Harmony of the Seas carry?
About 2,200–6,687 guests, according to Wikidata's record for the ship. Cruise lines usually quote capacity at two guests per cabin; with third and fourth berths filled, the maximum is higher.
When was Harmony of the Seas built?
Harmony of the Seas entered service in 2016 and was built by Chantiers de l'Atlantique.
What class of ship is Harmony of the Seas?
Harmony of the Seas belongs to Royal Caribbean's Oasis class, alongside Utopia of the Seas, Wonder of the Seas, Symphony of the Seas, Allure of the Seas, Oasis of the Seas. Ships in the same class share a layout and most signature features.
Is Harmony of the Seas good for families?
Kids are a core audience. Adventure Ocean runs supervised, age-grouped programs for children 3 to 12 (with group babysitting late in the evening for a fee), and teen clubs give 12- to 17-year-olds their own lounge and activities. Facilities vary by ship, so check what Harmony of the Seas offers for your kids' ages.
Updated November 2026 by the BookMyDreamCruise editorial team. How we research and fact-check.
Sources: Wikidata, Wikipedia, Royal Caribbean official site.