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
Symphony of the Seas
Gross Tonnage
Harmony of the Seas
226,963 GT
Symphony of the Seas
228,081 GT
Length
Harmony of the Seas
362 m
Symphony of the Seas
362 m
Beam
Harmony of the Seas
66 m
Symphony of the Seas
66 m
Passengers
Harmony of the Seas
6,687
Symphony of the Seas
6,680
Crew
Harmony of the Seas
2,100
Symphony of the Seas
2,200
Decks
Harmony of the Seas
—
Symphony of the Seas
18
Year Built
Harmony of the Seas
2,016
Symphony of the Seas
2,018
Space Ratio
Harmony of the Seas
33.9 GT/pax
Symphony of the Seas
34.1 GT/pax
Passenger:Crew Ratio
Harmony of the Seas
3.18 :1
Symphony of the Seas
3.04 :1
| Specification | Harmony of the Seas | Symphony of the Seas |
|---|---|---|
| Overview | ||
| Cruise Line | Royal Caribbean International | Royal Caribbean International |
| Class | Oasis Class | Oasis Class |
| Status | active | active |
| Year Built | 2,016 | 2,018Winner |
| Dimensions | ||
| Gross Tonnage | 226,963 GT | 228,081 GTWinner |
| Length | 362 m | 362 m |
| Beam | 66 m | 66 m |
| Draft | 9.3 m | 9.3 m |
| Decks | — | |
| Capacity | ||
| Passengers | 6,687Winner | 6,680 |
| Crew | 2,100 | 2,200Winner |
| Key Ratios | ||
| Space Ratio | 33.9 GT/pax | 34.1 GT/paxWinner |
| Passenger:Crew Ratio | 3.18:1 | 3.04:1Winner |
| Build | ||
| Builder | STX France | STX France |
| Flag | Bahamas | Bahamas |
| IMO Number | 9682875 | 9744001 |
Built in 2018, Symphony of the Seas is 2 years newer — an advantage for travellers seeking modern amenities and design. Symphony of the Seas edges ahead in service with a passenger-to-crew ratio of 3.0:1, meaning more crew per guest.
| Category | Winner |
|---|---|
| Size | Symphony of the Seas |
| Capacity | Symphony of the Seas |
| Modernity | Symphony of the Seas |
| Service | Symphony of the Seas |
| Spaciousness | Symphony of the Seas |
Bottom line: Symphony of the Seas wins more categories (5 vs 0), 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
Symphony of the Seas
6,680 passengers means tons of activities
Large 6,680-guest capacity offers competitive pricing
Built in 2018 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
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