Spots going fastSilver Shadow vs Sirena
Side-by-side cruise ship comparison · Updated April 2026
Sirena is the larger vessel at 30,277 GT — 7% more than Silver Shadow's 28,258 GT. Silver Shadow offers more personal space with a space ratio of 72.8 GT per passenger versus 44.3. Silver Shadow edges ahead in service with a passenger-to-crew ratio of 1.3:1, meaning more crew per guest.
Score: 5 – 2
Quick Compare
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Category
Silver Shadow
Sirena
Size
28,258 GT
30,277 GT
Passengers
388
684
Year Built
2000
1999
Crew Ratio
1:1.3
1:1.7
Space Ratio
72.8
44.3
Decks
—
—
Length
186m
181m
From Price
$4,800/pp
—
Comparison Verdict
Sirena is the larger vessel at 30,277 GT — 7% more than Silver Shadow's 28,258 GT. Silver Shadow offers more personal space with a space ratio of 72.8 GT per passenger versus 44.3. Silver Shadow edges ahead in service with a passenger-to-crew ratio of 1.3:1, meaning more crew per guest.
| Category | Winner |
|---|---|
| Size | Silver Shadow |
| Capacity | Sirena |
| Modernity | Silver Shadow |
| Service | Silver Shadow |
| Spaciousness | Silver Shadow |
| Decks | Tie |
| Length | Silver Shadow |
| Fleet Power | Sirena |
Bottom line: Silver Shadow leads 5–2 across our categories — strongest in Size. Choose Silver Shadow for overall superiority; pick Sirena if its strengths matter more to you.
Which Ship Is Right for You?
Choose Silver Shadow if...
- You want the newer ship (built 2000, 1yr newer)
- Better service ratio (1.3:1 crew ratio)
- More space per guest (72.8 GT/pax)
You've compared the ships. Now see what they cost.
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Sailing Prices
| Silver Shadow | Sirena | |
|---|---|---|
| Cheapest | $4,800 pp | — |
| Departing | Jul 31 | — |
| Duration | 6 nights | — |
| View Deal |
Prices from Cruisebound. We may earn a commission at no extra cost to you.
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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.
