Spots going fastCosta Serena vs Rotterdam
Side-by-side cruise ship comparison · Updated April 2026
Costa Serena is the larger vessel at 114,500 GT — 15% more than Rotterdam's 99,836 GT. Rotterdam offers more personal space with a space ratio of 37.4 GT per passenger versus 30.3. Built in 2021, Rotterdam is 14 years newer — an advantage for travellers seeking modern amenities and design.
Score: 3 – 4
Quick Compare
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Category
Costa Serena
Rotterdam
Size
114,500 GT
99,836 GT
Passengers
3,780
2,668
Year Built
2007
2021
Crew Ratio
1:3.4
1:2.6
Space Ratio
30.3
37.4
Decks
14
—
Length
290m
299m
From Price
$260.3/pp
$1,409/pp
Comparison Verdict
Costa Serena is the larger vessel at 114,500 GT — 15% more than Rotterdam's 99,836 GT. Rotterdam offers more personal space with a space ratio of 37.4 GT per passenger versus 30.3. Built in 2021, Rotterdam is 14 years newer — an advantage for travellers seeking modern amenities and design.
| Category | Winner |
|---|---|
| Size | Costa Serena |
| Capacity | Costa Serena |
| Modernity | Rotterdam |
| Service | Rotterdam |
| Spaciousness | Rotterdam |
| Decks | Tie |
| Length | Rotterdam |
| Fleet Power | Costa Serena |
Bottom line: Rotterdam leads 4–3 across our categories — strongest in Modernity. Choose Rotterdam for overall superiority; pick Costa Serena if Size matter more to you.
Which Ship Is Right for You?
Choose Costa Serena if...
- Size matters to you (114,500 GT)
- More onboard variety (3,780 guests)
- Save $1,148.7/person on sailings
Choose Rotterdam if...
- You want the newer ship (built 2021, 14yr newer)
- Better service ratio (2.6:1 crew ratio)
- More space per guest (37.4 GT/pax)
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Frequently Asked Questions
How is the comparison score calculated?
We compute scores across 8 categories using real spec data — gross tonnage, passenger capacity, crew capacity, year built, length, deck count, space ratio, and fleet power. Each category awards one point to the winning ship.
What is the space ratio and why does it matter?
Space ratio is gross tonnage divided by passenger capacity. A higher number means more space per guest. Luxury lines typically score above 40; mass-market ships often fall in the 30-40 range.
What does the passenger-to-crew ratio mean?
Passengers per crew member. Lower is better — more staff per guest means better service. Luxury lines aim below 2:1; large mainstream ships may be 3-4:1.
Are the prices shown accurate?
Prices are sourced from Cruisebound and reflect real-time availability. They may change based on cabin type, date, and demand. Click through to see the latest fares.
Can I compare more than two ships?
Yes — up to four ships. Use the search tool on the compare hub page to add additional ships.
How current is the ship data?
Specifications come from our database of 380+ vessels, revalidated every 5 minutes via ISR. The "Updated" timestamp shows when records were last modified.
