Side-by-side cruise ship comparison · Updated February 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)
Costa Serena
Marella Explorer
Gross Tonnage
Costa Serena
114,500 GT
Marella Explorer
77,499 GT
Length
Costa Serena
290 m
Marella Explorer
264 m
Beam
Costa Serena
35.5 m
Marella Explorer
32 m
Passengers
Costa Serena
3,780
Marella Explorer
1,924
Crew
Costa Serena
1,100
Marella Explorer
909
Decks
Costa Serena
14
Marella Explorer
—
Year Built
Costa Serena
2,007
Marella Explorer
1,996
Space Ratio
Costa Serena
30.3 GT/pax
Marella Explorer
40.3 GT/pax
Passenger:Crew Ratio
Costa Serena
3.44 :1
Marella Explorer
2.12 :1
| Specification | Costa Serena | Marella Explorer |
|---|---|---|
| Overview | ||
| Cruise Line | Costa Cruises | Marella Cruises |
| Class | Concordia Class | Galaxy Class |
| Status | active | active |
| Year Built | 2,007Winner | 1,996 |
| Dimensions | ||
| Gross Tonnage | 114,500 GTWinner | 77,499 GT |
| Length | 290 mWinner | 264 m |
| Beam | 35.5 mWinner | |
| Capacity | ||
| Passengers | 3,780Winner | 1,924 |
| Crew | 1,100Winner | 909 |
| Key Ratios | ||
| Space Ratio | 30.3 GT/pax | 40.3 GT/paxWinner |
| Passenger:Crew Ratio | 3.44:1 | 2.12:1Winner |
| Build | ||
| Builder | Fincantieri | Meyer Werft |
| Flag | Italy | Malta |
| IMO Number | Tf1ba6e887 | 9125515 |
Costa Serena is the significantly larger vessel at 114,500 GT — 48% more than Marella Explorer's 77,499 GT. Marella Explorer offers more personal space with a space ratio of 40.3 GT per passenger versus 30.3. Built in 2007, Costa Serena is 11 years newer — an advantage for travellers seeking modern amenities and design.
| Category | Winner |
|---|---|
| Size | Costa Serena |
| Capacity | Costa Serena |
| Modernity | Costa Serena |
| Service | Marella Explorer |
| Spaciousness | Marella Explorer |
Bottom line: Costa Serena wins more categories (3 vs 2), making it the stronger all-round choice based on current data.
Costa Serena
Well-suited for cruise newcomers
Large 3,780-guest capacity offers competitive pricing
3,780 passengers means tons of activities
Comfortable atmosphere for two
Marella Explorer
40 GT/pax means plenty of quiet space
Well-suited for cruise newcomers
Premium onboard experience
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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32 m |
| Draft | 8.3 mWinner | 7.5 m |
| Decks | 14 | — |
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