Spots going fastSeven Seas Explorer vs Seven Seas Mariner
Side-by-side cruise ship comparison · Updated January 2026
Seven Seas Explorer is the larger vessel at 55,254 GT — 15% more than Seven Seas Mariner's 48,075 GT. Built in 2016, Seven Seas Explorer is 15 years newer — an advantage for travellers seeking modern amenities and design. Seven Seas Explorer edges ahead in service with a passenger-to-crew ratio of 1.4:1, meaning more crew per guest.
Score: 7 – 0
Quick Compare
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Category
Seven Seas Explorer
Seven Seas Mariner
Size
55,254 GT
48,075 GT
Passengers
750
700
Year Built
2016
2001
Crew Ratio
1:1.4
1:1.6
Space Ratio
73.7
68.7
Decks
—
—
Length
224m
216m
From Price
$9,149/pp
$14,199/pp
Comparison Verdict
Seven Seas Explorer is the larger vessel at 55,254 GT — 15% more than Seven Seas Mariner's 48,075 GT. Built in 2016, Seven Seas Explorer is 15 years newer — an advantage for travellers seeking modern amenities and design. Seven Seas Explorer edges ahead in service with a passenger-to-crew ratio of 1.4:1, meaning more crew per guest.
| Category | Winner |
|---|---|
| Size | Seven Seas Explorer |
| Capacity | Seven Seas Explorer |
| Modernity | Seven Seas Explorer |
| Service | Seven Seas Explorer |
| Spaciousness | Seven Seas Explorer |
| Decks | Tie |
| Length | Seven Seas Explorer |
| Fleet Power | Seven Seas Explorer |
Bottom line: Seven Seas Explorer leads 7–0 across our categories — strongest in Size. Choose Seven Seas Explorer for overall superiority; pick Seven Seas Mariner if its strengths matter more to you.
Which Ship Is Right for You?
Choose Seven Seas Explorer if...
- You want the newer ship (built 2016, 15yr newer)
- Size matters to you (55,254 GT)
- More onboard variety (750 guests)
- Better service ratio (1.4:1 crew ratio)
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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.
