Side-by-side cruise ship comparison · Updated January 2026
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across 5 categories
Size
Based on gross tonnage and length
Capacity
Based on passengers and crew
Modernity
Based on year built
Service
Based on passenger-to-crew ratio (lower is better)
Spaciousness
Based on gross tonnage per passenger (higher is better)
Harmony of the Seas
MSC World America
Gross Tonnage
Harmony of the Seas
226,963 GT
MSC World America
215,863 GT
Length
Harmony of the Seas
362 m
MSC World America
333 m
Beam
Harmony of the Seas
66 m
MSC World America
47 m
Passengers
Harmony of the Seas
6,687
MSC World America
6,762
Crew
Harmony of the Seas
2,100
MSC World America
2,138
Decks
Harmony of the Seas
—
MSC World America
—
Year Built
Harmony of the Seas
2,016
MSC World America
2,025
Space Ratio
Harmony of the Seas
33.9 GT/pax
MSC World America
31.9 GT/pax
Passenger:Crew Ratio
Harmony of the Seas
3.18 :1
MSC World America
3.16 :1
| Specification | Harmony of the Seas | MSC World America |
|---|---|---|
| Overview | ||
| Cruise Line | Royal Caribbean International | MSC Cruises |
| Class | Oasis Class | World Class |
| Status | active | active |
| Year Built | 2,016 | 2,025Winner |
| Dimensions | ||
| Gross Tonnage | 226,963 GTWinner | 215,863 GT |
| Length | 362 mWinner | 333 m |
| Beam | 66 mWinner | |
| Capacity | ||
| Passengers | 6,687 | 6,762Winner |
| Crew | 2,100 | 2,138Winner |
| Key Ratios | ||
| Space Ratio | 33.9 GT/paxWinner | 31.9 GT/pax |
| Passenger:Crew Ratio | 3.18:1 | 3.16:1Winner |
| Build | ||
| Builder | STX France | Chantiers de l'Atlantique |
| Flag | Bahamas | Malta |
| IMO Number | 9682875 | 9871645 |
Harmony of the Seas is the larger vessel at 226,963 GT — 5% more than MSC World America's 215,863 GT. Built in 2025, MSC World America is 9 years newer — an advantage for travellers seeking modern amenities and design.
| Category | Winner |
|---|---|
| Size | Harmony of the Seas |
| Capacity | MSC World America |
| Modernity | MSC World America |
| Service | MSC World America |
| Spaciousness | Harmony of the Seas |
Bottom line: MSC World America wins more categories (3 vs 2), making it the stronger all-round choice based on current data.
Harmony of the Seas
Large 6,687-guest capacity offers competitive pricing
6,687 passengers means tons of activities
Built in 2016 with modern facilities — great for a first cruise
Comfortable atmosphere for two
MSC World America
Large 6,762-guest capacity offers competitive pricing
6,762 passengers means tons of activities
Built in 2025 with modern facilities — great for a first cruise
Comfortable atmosphere for two
Free cancellation on most rooms
Bundle & save on your cruise trip
Medical, trip cancellation & luggage cover
We may earn a commission from partner bookings at no extra cost to you.
47 m |
| Draft | 9.3 m | 9.4 mWinner |
| Decks | — | — |
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