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)
Silver Endeavour
Ultramarine
Gross Tonnage
Silver Endeavour
23,500 GT
Ultramarine
13,000 GT
Length
Silver Endeavour
164 m
Ultramarine
128 m
Beam
Silver Endeavour
23 m
Ultramarine
20 m
Passengers
Silver Endeavour
200
Ultramarine
199
Crew
Silver Endeavour
208
Ultramarine
140
Decks
Silver Endeavour
—
Ultramarine
—
Year Built
Silver Endeavour
2,021
Ultramarine
2,021
Space Ratio
Silver Endeavour
117.5 GT/pax
Ultramarine
65.3 GT/pax
Passenger:Crew Ratio
Silver Endeavour
0.96 :1
Ultramarine
1.42 :1
| Specification | Silver Endeavour | Ultramarine |
|---|---|---|
| Overview | ||
| Cruise Line | Silversea Cruises | Quark Expeditions |
| Class | Expedition | Expedition |
| Status | active | active |
| Year Built | 2,021 | 2,021 |
| Dimensions | ||
| Gross Tonnage | 23,500 GTWinner | 13,000 GT |
| Length | 164 mWinner | 128 m |
| Beam | 23 mWinner | |
| Capacity | ||
| Passengers | 200Winner | 199 |
| Crew | 208Winner | 140 |
| Key Ratios | ||
| Space Ratio | 117.5 GT/paxWinner | 65.3 GT/pax |
| Passenger:Crew Ratio | 0.96:1Winner | 1.42:1 |
| Build | ||
| Builder | MV Werften | Brodosplit |
| Flag | Bahamas | Bahamas |
| IMO Number | 9851644 | 9898840 |
Silver Endeavour
118 GT/pax means plenty of quiet space
1.0:1 passenger-crew ratio means exceptional service
Built in 2021 with modern facilities — great for a first cruise
Good range of onboard options
Ultramarine
65 GT/pax means plenty of quiet space
1.4:1 passenger-crew ratio means exceptional service
Built in 2021 with modern facilities — great for a first cruise
Good range of onboard options
Free cancellation on most rooms
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Medical, trip cancellation & luggage cover
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20 m |
| Draft | 6.1 m | — |
| Decks | — | — |
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