Royal Caribbean
Harmony of the Seas
- Cruises
- 39
- From
- $309
Ship comparison
Harmony of the Seas vs MSC World America
MSC Cruises
MSC World America
- Cruises
- 13
- From
- $468
The verdict
Which should you choose?
Harmony of the Seas is a mega Royal Caribbean ship carrying 5,479 passengers, in service since 2016. MSC World America is a mega MSC Cruises ship carrying 5,240 passengers, in service since 2025.
Choose Harmony of the Seas if you want better-rated entertainment, better-rated dining or better-rated staterooms: it outscores MSC World America for entertainment (10.0 vs 8.0), dining (7.5 vs 6.0) and staterooms (7.5 vs 6.0) in Cruiseable’s Bliss scores.
Choose MSC World America if you want more adventure and nature, a newer ship or more culture: it outscores Harmony of the Seas for adventure & nature (5.0 vs 2.0) and cultural (5.0 vs 4.0) in Cruiseable’s Bliss scores and its maiden voyage was in 2025 (vs 2016).
Side by side
Specifications
marks the better figure where more, or less, is plainly better.
| Harmony of the Seas | MSC World America | |
|---|---|---|
| Cruise line | Royal Caribbean | MSC Cruises |
| Ship size | Mega | Mega |
| Maiden voyagenewer highlighted | 2016 | 2025 (better) |
| Gross tonnage | 227,000 | 215,863 |
| Passengers | 5,479 | 5,240 |
| Crew | 2,100 | 2,138 |
| Passengers per crew memberfewer is better | 2.6 | 2.5 (better) |
| Space per passengergross tons per passenger; more is roomier | 41.4 (better) | 41.2 |
| Decks | 18 | 20 |
| Length | 1,188 ft | 1,093 ft |
| Beam | 215 ft | 154 ft |
| Speed | 25 mph | 26 mph |
| Cruiseable ratingout of 10 | 9 / 10 (better) | 8 / 10 |
| Cruises on sale | 39 | 13 |
| Upcoming sailings | 86 | 206 |
| Cruise lengths | 2 to 9 nights | 6 to 15 nights |
| Fares fromlower highlighted | $309 (better) | $468 |
Bliss scores
How they rate, out of 10
Cruiseable rates ships out of 10 on ten parts of a cruise holiday. Harmony of the Seas leads on 7 of the ten, MSC World America on 2, with 1 level.
- Active
- Adventure & nature
- Cultural
- Dining
- Entertainment
- Family friendly
- Party
- Romantic
- Spa & fitness
- Staterooms
Royal Caribbean
Harmony of the Seas
The 5,479-passenger Harmony of the Seas is currently the world's third biggest cruise ship behind Wonder of the Seas and Symphony of the Seas (with the largest, Icon of the Seas, coming in 2024).
Highlights
- The Ultimate Abyss is the tallest waterslide at sea with a 100-foot drop.
- Fun choices for active cruisers, including 2 FlowRiders, a zipline, ice rink and bumper cars.
- Lots to keep the kiddies entertained, including Splashaway Bay with its sea creature water cannons and winding slides.
- Multiple upscale dining options
Sailing now
39 cruises on sale, from $309.
About Harmony of the Seas Plan my cruise on Harmony of the Seas
MSC Cruises
MSC World America
MSC World America became a notable addition to the MSC Cruises fleet in April 2025 with voyages from Miami to the Caribbean. This ship is the Swiss-based cruise line's second World Class ship, marking a milestone as the first in the class dedicated specifically to the U.S. market.
Sailing now
13 cruises on sale, from $468.
Questions
Harmony of the Seas or MSC World America?
Which is bigger, Harmony of the Seas or MSC World America?
Harmony of the Seas is bigger at 227,000 gross tons, against 215,863 gross tons for MSC World America. Harmony of the Seas carries 5,479 passengers and MSC World America carries 5,240.
Which ship is newer, Harmony of the Seas or MSC World America?
MSC World America is newer, with a maiden voyage in 2025 against 2016 for Harmony of the Seas.
Which has more space per passenger?
Harmony of the Seas, with 41.4 gross tons per passenger against 41.2 on MSC World America. The higher the figure, the more ship there is for each guest.
Which has more crew per passenger?
MSC World America, with one crew member for every 2.5 passengers against one for every 2.6 on Harmony of the Seas.
Which is better for families?
Harmony of the Seas scores higher for family friendliness in Cruiseable’s Bliss scores: 10.0 out of 10, against 9.0 for MSC World America.
Still deciding?
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