Side-by-side cruise ship comparison · Updated February 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)
National Geographic Sea Lion
Wilderness Discoverer
Gross Tonnage
National Geographic Sea Lion
100 GT
Wilderness Discoverer
99 GT
Length
National Geographic Sea Lion
46 m
Wilderness Discoverer
53 m
Beam
National Geographic Sea Lion
10 m
Wilderness Discoverer
11 m
Passengers
National Geographic Sea Lion
62
Wilderness Discoverer
76
Crew
National Geographic Sea Lion
25
Wilderness Discoverer
28
Decks
National Geographic Sea Lion
—
Wilderness Discoverer
—
Year Built
National Geographic Sea Lion
1,982
Wilderness Discoverer
1,992
Space Ratio
National Geographic Sea Lion
1.6 GT/pax
Wilderness Discoverer
1.3 GT/pax
Passenger:Crew Ratio
National Geographic Sea Lion
2.48 :1
Wilderness Discoverer
2.71 :1
| Specification | National Geographic Sea Lion | Wilderness Discoverer |
|---|---|---|
| Overview | ||
| Cruise Line | Lindblad Expeditions | UnCruise Adventures |
| Class | Expedition | Expedition |
| Status | active | active |
| Year Built | 1,982 | 1,992Winner |
| Dimensions | ||
| Gross Tonnage | 100 GTWinner | 99 GT |
| Length | 46 m | 53 mWinner |
| Beam | 10 m | 11 mWinner |
| Capacity | ||
| Passengers | 62 | 76Winner |
| Crew | 25 | 28Winner |
| Key Ratios | ||
| Space Ratio | 1.6 GT/paxWinner | 1.3 GT/pax |
| Passenger:Crew Ratio | 2.48:1Winner | 2.71:1 |
| Build | ||
| Builder | Whidbey Island | Blount Marine |
| Flag | United States | United States |
| IMO Number | 8314718 | 8884166 |
National Geographic Sea Lion
Good value for money
Comfortable atmosphere for two
Premium onboard experience
Well-suited for cruise newcomers
Wilderness Discoverer
Good value for money
Comfortable atmosphere for two
Premium onboard experience
Well-suited for cruise newcomers
Free cancellation on most rooms
Bundle & save on your cruise trip
Medical, trip cancellation & luggage cover
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| Draft | — | — |
| Decks | — | — |
