Side-by-side cruise ship comparison · Updated January 2026
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)
Adventure of the Seas
Mariner of the Seas
Gross Tonnage
Adventure of the Seas
137,276 GT
Mariner of the Seas
139,863 GT
Length
Adventure of the Seas
311 m
Mariner of the Seas
311 m
Beam
Adventure of the Seas
48 m
Mariner of the Seas
48 m
Passengers
Adventure of the Seas
3,114
Mariner of the Seas
3,807
Crew
Adventure of the Seas
1,185
Mariner of the Seas
1,185
Decks
Adventure of the Seas
—
Mariner of the Seas
—
Year Built
Adventure of the Seas
2,001
Mariner of the Seas
2,003
Space Ratio
Adventure of the Seas
44.1 GT/pax
Mariner of the Seas
36.7 GT/pax
Passenger:Crew Ratio
Adventure of the Seas
2.63 :1
Mariner of the Seas
3.21 :1
| Specification | Adventure of the Seas | Mariner of the Seas |
|---|---|---|
| Overview | ||
| Cruise Line | Royal Caribbean International | Royal Caribbean International |
| Class | Voyager Class | Voyager Class |
| Status | active | active |
| Year Built | 2,001 | 2,003Winner |
| Dimensions | ||
| Gross Tonnage | 137,276 GT | 139,863 GTWinner |
| Length | 311 m | 311 m |
| Beam | 48 m | 48 m |
| Draft | 9.2 m | 9.3 mWinner |
| Capacity | ||
| Passengers | 3,114 | 3,807Winner |
| Crew | 1,185 | 1,185 |
| Key Ratios | ||
| Space Ratio | 44.1 GT/paxWinner | 36.7 GT/pax |
| Passenger:Crew Ratio | 2.63:1Winner | 3.21:1 |
| Build | ||
| Builder | Kvaerner Masa-Yards | Kvaerner Masa-Yards |
| Flag | Bahamas | Bahamas |
| IMO Number | 9168705 | 9227510 |
Adventure of the Seas offers more personal space with a space ratio of 44.1 GT per passenger versus 36.7. Built in 2003, Mariner of the Seas is 2 years newer — an advantage for travellers seeking modern amenities and design. Adventure of the Seas edges ahead in service with a passenger-to-crew ratio of 2.6:1, meaning more crew per guest.
| Category | Winner |
|---|---|
| Size | Mariner of the Seas |
| Capacity | Mariner of the Seas |
| Modernity | Mariner of the Seas |
| Service | Adventure of the Seas |
| Spaciousness | Adventure of the Seas |
Bottom line: Mariner of the Seas wins more categories (3 vs 2), making it the stronger all-round choice based on current data.
Adventure of the Seas
Well-suited for cruise newcomers
Large 3,114-guest capacity offers competitive pricing
3,114 passengers means tons of activities
44 GT/pax means plenty of quiet space
Mariner of the Seas
Large 3,807-guest capacity offers competitive pricing
Well-suited for cruise newcomers
3,807 passengers means tons of activities
Comfortable atmosphere for two
Free cancellation on most rooms
Bundle & save on your cruise trip
Medical, trip cancellation & luggage cover
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| Decks | — | — |
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