Leaves in 8 daysSirena vs Seabourn Quest
Side-by-side cruise ship comparison · Updated January 2026
Seabourn Quest is the larger vessel at 32,346 GT — 7% more than Sirena's 30,277 GT. Seabourn Quest offers more personal space with a space ratio of 70.6 GT per passenger versus 44.3. Built in 2011, Seabourn Quest is 12 years newer — an advantage for travellers seeking modern amenities and design.
Score: 2 – 5
Quick Compare
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Category
Sirena
Seabourn Quest
Size
30,277 GT
32,346 GT
Passengers
684
458
Year Built
1999
2011
Crew Ratio
1:1.7
1:1.4
Space Ratio
44.3
70.6
Decks
—
—
Length
181m
198m
From Price
$5,299/pp
$6,198/pp
Comparison Verdict
Seabourn Quest is the larger vessel at 32,346 GT — 7% more than Sirena's 30,277 GT. Seabourn Quest offers more personal space with a space ratio of 70.6 GT per passenger versus 44.3. Built in 2011, Seabourn Quest is 12 years newer — an advantage for travellers seeking modern amenities and design.
| Category | Winner |
|---|---|
| Size | Seabourn Quest |
| Capacity | Sirena |
| Modernity | Seabourn Quest |
| Service | Seabourn Quest |
| Spaciousness | Seabourn Quest |
| Decks | Tie |
| Length | Seabourn Quest |
| Fleet Power | Sirena |
Bottom line: Seabourn Quest leads 5–2 across our categories — strongest in Size. Choose Seabourn Quest for overall superiority; pick Sirena if Capacity matter more to you.
Which Ship Is Right for You?
Choose Seabourn Quest if...
- You want the newer ship (built 2011, 12yr newer)
- Size matters to you (32,346 GT)
- Better service ratio (1.4:1 crew ratio)
- More space per guest (70.6 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.
