Spots going fast5 Night Western Caribbean Cruise
Royal Caribbean • Mariner of the Seas
Sep 14, 2026 · 5 nights
Caribbean
$329/person$66/night
View Deal →Mariner of the Seas vs Norwegian Epic
Side-by-side cruise ship comparison · Updated April 2026
Norwegian Epic is the larger vessel at 155,873 GT, 11% more than Mariner of the Seas's 139,863 GT. Built in 2010, Norwegian Epic is 7 years newer, an advantage for travellers seeking modern amenities and design. Norwegian Epic edges ahead in service with a passenger-to-crew ratio of 2.3:1, meaning more crew per guest.
Score: 0 – 7
Quick Compare
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Category
Mariner of the Seas
Norwegian Epic
Size
139,863 GT
155,873 GT
Passengers
3,807
4,100
Year Built
2003
2010
Crew Ratio
1:3.2
1:2.3
Space Ratio
36.7
38.0
Decks
—
—
Length
311m
329m
From Price
$328.94/pp
$929/pp
Comparison Verdict
Norwegian Epic is the larger vessel at 155,873 GT, 11% more than Mariner of the Seas's 139,863 GT. Built in 2010, Norwegian Epic is 7 years newer, an advantage for travellers seeking modern amenities and design. Norwegian Epic edges ahead in service with a passenger-to-crew ratio of 2.3:1, meaning more crew per guest.
| Category | Winner |
|---|---|
| Size | Norwegian Epic |
| Capacity | Norwegian Epic |
| Modernity | Norwegian Epic |
| Service | Norwegian Epic |
| Spaciousness | Norwegian Epic |
| Decks | Tie |
| Length | Norwegian Epic |
| Fleet Power | Norwegian Epic |
Bottom line: Norwegian Epic leads 7–0 across our categories, strongest in Size. Choose Norwegian Epic for overall superiority; pick Mariner of the Seas if its strengths matter more to you.
Which Ship Is Right for You?
Choose Norwegian Epic if...
- You want the newer ship (built 2010, 7yr newer)
- Size matters to you (155,873 GT)
- More onboard variety (4,100 guests)
- Better service ratio (2.3:1 crew ratio)
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Deep Dive
Upcoming Sailings
Upcoming Sailings on Mariner of the Seas
Spots going fast
Leaves in 8 days5 Night Western Caribbean Cruise
Royal Caribbean • Mariner of the Seas
Sep 19, 2026 · 5 nights
Caribbean
$398/person$80/night
View Deal →
Leaves in 13 days$2,219/person$555/night
View Deal →Upcoming Sailings on Norwegian Epic
Spots going fast$1,109/person$158/night
View Deal →
Leaves in 16 days$1,009/person$144/night
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Leaves in 23 days$929/person$133/night
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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.
