Royal Caribbean · Oasis Class
Harmony of the Seas
Harmony of the Seas launched in 2016 at 226,963 GT as the third Oasis-class ship. It was the first ship to feature the Ultimate Abyss slide and carries 5,479 guests at double occupancy across 16 guest-accessible decks.
Ship specs
- Cruise line: Royal Caribbean
- Ship class: Oasis
- Year launched: 2016
- Gross tonnage: 226,963 GT
- Length: 1,188 ft
- Passengers (double occupancy): 5,479
- Passengers (max): 6,687
About Harmony of the Seas
Harmony of the Seas launched in 2016 at 226,963 GT as the third Oasis-class ship. It was the first ship to feature the Ultimate Abyss slide and carries 5,479 guests at double occupancy across 16 guest-accessible decks.
Best for: This ship works well for multigenerational family groups, thanks to dozens of connecting staterooms and a strong mix of activities for all ages.
Key features and highlights
- ▸ The Ultimate Abyss is the tallest slide at sea, plunging 10 stories from the pool deck.
- ▸ The Bionic Bar features robotic arms that mix and serve cocktails, preparing up to 1,000 drinks per day from 30 spirits and 21 mixers.
- ▸ Two FlowRider surf simulators and a full zip line across the Boardwalk keep thrill-seekers busy.
- ▸ Studio B serves as both an ice-skating rink and a venue for full ice shows.
- ▸ Central Park is an open-air neighborhood with live plants, fine dining, and a jazz club.
What to know before you book
Cabin tips
Harmony has an unusually large selection of connecting staterooms, making it ideal for families or groups. If you want a quiet retreat, book a Central Park balcony mid-ship. Virtual Balcony interior rooms (172 sq ft) use HD screens to simulate an ocean view and offer solid value.
Dining
About 20 dining venues include the upscale 150 Central Park, Giovanni's Table for Italian, Samba Grill Brazilian Steakhouse (added during amplification), and the complimentary Park Cafe for a quick Kummelweck roast beef sandwich.
Entertainment
Nightly shows run in the 1,400-seat Royal Theater, the AquaTheater hosts diving and acrobatic performances, and the Bionic Bar's robot bartenders are worth visiting for the spectacle alone. A jazz club, karaoke bar, and comedy club round out the nightlife.
Cabin sizes by category
Interior
| Subcategory | Cabin size | Balcony | Max guests |
|---|---|---|---|
| Standard Interior, Promenade View, Boardwalk View, Park View, Family Interior | 172-260 sq ft | Not published | Not published |
Oceanview
| Subcategory | Cabin size | Balcony | Max guests |
|---|---|---|---|
| Standard Oceanview, Ultra Spacious Oceanview | 179-271 sq ft | Not published | Not published |
Balcony
| Subcategory | Cabin size | Balcony | Max guests |
|---|---|---|---|
| Spacious Balcony, Boardwalk Balcony, Park Balcony, Family Balcony | 182-271 sq ft | 50-82 sq ft | Not published |
Suite
| Subcategory | Cabin size | Balcony | Max guests |
|---|---|---|---|
| Junior Suite, Grand Suite, Panoramic Suite, Star Loft Suite, Owner's Suite, AquaTheater Suite, Four-Bedroom Family Suite, Royal Loft Suite | 287-1524 sq ft | up to 843 sq ft | Not published |
Cabin sizes are sourced from deck plan databases and may vary by specific stateroom number. Always confirm with the cruise line before booking.
Frequently asked questions
How big is the Harmony of the Seas?
Harmony of the Seas is approximately 226,963 gross tons, 1,188 feet long, and carries approximately 5,479 passengers at double occupancy (up to 6,687 at full capacity).
What are the cabin sizes on Harmony of the Seas?
Harmony of the Seas offers 4 cabin subcategories across 4 main types. Interior: 172-260 sq ft. Oceanview: 179-271 sq ft. Balcony: 182-271 sq ft. Suite: 287-1524 sq ft.
What class is the Harmony of the Seas?
Harmony of the Seas is a Oasis class ship operated by Royal Caribbean. It launched in 2016.
More on Royal Caribbean
Other Royal Caribbean ships
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Sources & verification
- ship-specs: https://www.royalcaribbean.com/cruise-ships/harmony-of-the-seas
- cabin-dimensions: https://www.cruisedeckplans.com/DP/ships/Harmony-of-the-Seas/staterooms
Verified 2026-04-18. Ship specs and cabin sizes can change with refurbishments and reconfiguration. Confirm with the cruise line before booking.