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 Bird
Spirit of Enderby
Gross Tonnage
National Geographic Sea Bird
100 GT
Spirit of Enderby
1,764 GT
Length
National Geographic Sea Bird
46 m
Spirit of Enderby
72 m
Beam
National Geographic Sea Bird
10 m
Spirit of Enderby
13 m
Passengers
National Geographic Sea Bird
62
Spirit of Enderby
50
Crew
National Geographic Sea Bird
25
Spirit of Enderby
34
Decks
National Geographic Sea Bird
—
Spirit of Enderby
—
Year Built
National Geographic Sea Bird
1,982
Spirit of Enderby
1,984
Space Ratio
National Geographic Sea Bird
1.6 GT/pax
Spirit of Enderby
35.3 GT/pax
Passenger:Crew Ratio
National Geographic Sea Bird
2.48 :1
Spirit of Enderby
1.47 :1
| Specification | National Geographic Sea Bird | Spirit of Enderby |
|---|---|---|
| Overview | ||
| Cruise Line | Lindblad Expeditions | Heritage Expeditions |
| Class | Expedition | Expedition |
| Status | active | active |
| Year Built | 1,982 | 1,984Winner |
| Dimensions | ||
| Gross Tonnage | 100 GT | 1,764 GTWinner |
| Length | 46 m | 72 mWinner |
| Beam | 10 m | 13 mWinner |
| Capacity | ||
| Passengers | 62Winner | 50 |
| Crew | 25 | 34Winner |
| Key Ratios | ||
| Space Ratio | 1.6 GT/pax | 35.3 GT/paxWinner |
| Passenger:Crew Ratio | 2.48:1 | 1.47:1Winner |
| Build | ||
| Builder | Whidbey Island | Hollming |
| Flag | United States | Russia |
| IMO Number | 8314706 | 8803856 |
National Geographic Sea Bird
Good value for money
Comfortable atmosphere for two
Premium onboard experience
Well-suited for cruise newcomers
Spirit of Enderby
Comfortable atmosphere for two
1.5:1 passenger-crew ratio means exceptional service
Good value for money
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 | — | — |
