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)
Greg Mortimer
Sylvia Earle
Gross Tonnage
Greg Mortimer
8,000 GT
Sylvia Earle
8,000 GT
Length
Greg Mortimer
104 m
Sylvia Earle
104 m
Beam
Greg Mortimer
18 m
Sylvia Earle
18 m
Passengers
Greg Mortimer
132
Sylvia Earle
132
Crew
Greg Mortimer
85
Sylvia Earle
85
Decks
Greg Mortimer
—
Sylvia Earle
—
Year Built
Greg Mortimer
2,019
Sylvia Earle
2,022
Space Ratio
Greg Mortimer
60.6 GT/pax
Sylvia Earle
60.6 GT/pax
Passenger:Crew Ratio
Greg Mortimer
1.55 :1
Sylvia Earle
1.55 :1
| Specification | Greg Mortimer | Sylvia Earle |
|---|---|---|
| Overview | ||
| Cruise Line | Aurora Expeditions | Aurora Expeditions |
| Class | Expedition | Expedition |
| Status | active | active |
| Year Built | 2,019 | 2,022Winner |
| Dimensions | ||
| Gross Tonnage | 8,000 GT | 8,000 GT |
| Length | 104 m | 104 m |
| Beam | 18 m | 18 m |
| Draft | — | 4.4 m |
| Decks | — | — |
| Capacity | ||
| Passengers | 132 | 132 |
| Crew | 85 | 85 |
| Key Ratios | ||
| Space Ratio | 60.6 GT/pax | 60.6 GT/pax |
| Passenger:Crew Ratio | 1.55:1 | 1.55:1 |
| Build | ||
| Builder | SunStone Ships | SunStone Ships |
| Flag | Bahamas | Bahamas |
| IMO Number | 9820490 | 9867868 |
Greg Mortimer
61 GT/pax means plenty of quiet space
1.6:1 passenger-crew ratio means exceptional service
Built in 2019 with modern facilities — great for a first cruise
Good range of onboard options
Sylvia Earle
61 GT/pax means plenty of quiet space
1.6:1 passenger-crew ratio means exceptional service
Built in 2022 with modern facilities — great for a first cruise
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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