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)
Seven Seas Explorer
Seven Seas Mariner
Gross Tonnage
Seven Seas Explorer
55,254 GT
Seven Seas Mariner
48,075 GT
Length
Seven Seas Explorer
224 m
Seven Seas Mariner
216 m
Beam
Seven Seas Explorer
32 m
Seven Seas Mariner
29 m
Passengers
Seven Seas Explorer
750
Seven Seas Mariner
700
Crew
Seven Seas Explorer
542
Seven Seas Mariner
445
Decks
Seven Seas Explorer
—
Seven Seas Mariner
—
Year Built
Seven Seas Explorer
2,016
Seven Seas Mariner
2,001
Space Ratio
Seven Seas Explorer
73.7 GT/pax
Seven Seas Mariner
68.7 GT/pax
Passenger:Crew Ratio
Seven Seas Explorer
1.38 :1
Seven Seas Mariner
1.57 :1
| Specification | Seven Seas Explorer | Seven Seas Mariner |
|---|---|---|
| Overview | ||
| Cruise Line | Regent Seven Seas Cruises | Regent Seven Seas Cruises |
| Class | Explorer Class | Mariner Class |
| Status | active | active |
| Year Built | 2,016Winner | 2,001 |
| Dimensions | ||
| Gross Tonnage | 55,254 GTWinner | 48,075 GT |
| Length | 224 mWinner | 216 m |
| Beam | 32 mWinner | |
| Capacity | ||
| Passengers | 750Winner | 700 |
| Crew | 542Winner | 445 |
| Key Ratios | ||
| Space Ratio | 73.7 GT/paxWinner | 68.7 GT/pax |
| Passenger:Crew Ratio | 1.38:1Winner | 1.57:1 |
| Build | ||
| Builder | Fincantieri | Chantiers de l'Atlantique |
| Flag | Bahamas | Bahamas |
| IMO Number | 9703150 | 9210139 |
Seven Seas Explorer is the larger vessel at 55,254 GT — 15% more than Seven Seas Mariner's 48,075 GT. Built in 2016, Seven Seas Explorer is 15 years newer — an advantage for travellers seeking modern amenities and design. Seven Seas Explorer edges ahead in service with a passenger-to-crew ratio of 1.4:1, meaning more crew per guest.
| Category | Winner |
|---|---|
| Size | Seven Seas Explorer |
| Capacity | Seven Seas Explorer |
| Modernity | Seven Seas Explorer |
| Service | Seven Seas Explorer |
| Spaciousness | Seven Seas Explorer |
Bottom line: Seven Seas Explorer wins more categories (5 vs 0), making it the stronger all-round choice based on current data.
Seven Seas Explorer
74 GT/pax means plenty of quiet space
1.4:1 passenger-crew ratio means exceptional service
Built in 2016 with modern facilities — great for a first cruise
Good range of onboard options
Seven Seas Mariner
69 GT/pax means plenty of quiet space
1.6:1 passenger-crew ratio means exceptional service
Well-suited for cruise newcomers
Good range of onboard options
Free cancellation on most rooms
Bundle & save on your cruise trip
Medical, trip cancellation & luggage cover
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29 m |
| Draft | 7.2 mWinner | 7 m |
| Decks | — | — |
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