Buttons go to cruise-line sources or this site — none pays us today. Disclosure
Mariner of the Seas
Mariner of the Seas is a Voyager Class ship in the Royal Caribbean fleet that entered service in 2003. According to Royal Caribbean, it measures 139,863 gross tons, carries 3,344 guests (double occupancy) and has 1,200 crew. #20 in Biggest Royal Caribbean ships · ranked by public data.
Mariner of the Seas key facts
- Cruise line
- Royal Caribbean
- Ship class
- Voyager Class
- Status
- In service
- Entered service
- Nov 16, 2003 (maiden voyage)
- Last refurbishment
- Not published
- Gross tonnage
- 139,863
- Guests
- 3,344 (double occupancy)
- Crew
- 1,200
- Guests per crew member
- 2.79 (calculated from the two official figures above)
- Decks
- 15 total, 14 guest decks
- Staterooms
- 1,675
- Length
- 1,020 ft (310 m)
- Beam (width)
- 127 ft
- Shipyard
- Kvaerner Masa-Yards, Turku, Finland
Source: Mariner of the Seas fact sheet (PDF), Royal Caribbean Press Center (document dated 12.22.25), accessed Oct 26, 2026. 7 of 8 core figures are published by Royal Caribbean; the rest show "Not published".
Features listed on the official fact sheet
From the same Royal Caribbean fact sheet. A feature missing here is not listed on the sheet; it may still exist.
Voyager Class sister ships
Compare Mariner of the Seas
Where Mariner of the Seas ranks
- 20 #20 in Biggest Royal Caribbean ships · ranked by public data
- 20 #20 in Newest Royal Caribbean ships · ranked by public data
- 12 #12 in Best Royal Caribbean ships for families · ranked by public data
- 14 #14 in Best Royal Caribbean ships for thrill seekers · ranked by public data
- 18 #18 in Royal Caribbean ships with a FlowRider · ranked by public data
- 10 #10 in Royal Caribbean ships with an ice rink · ranked by public data
- 12 #12 in Royal Caribbean ships with waterslides · ranked by public data
- 12 #12 in Royal Caribbean ships with laser tag · ranked by public data
- 10 #10 in Royal Caribbean ships with an escape room · ranked by public data
- 14 #14 in Royal Caribbean ships with mini golf · ranked by public data
Ships of similar size on other lines
Ships like Mariner of the Seas: similar ships compared →
FAQ
How big is Mariner of the Seas?
Mariner of the Seas measures 139,863 gross tons and is 1,020 ft (310 m) long, according to Royal Caribbean (checked Oct 26, 2026).
How many passengers does Mariner of the Seas hold?
Royal Caribbean lists 3,344 guests (double occupancy). It sails with 1,200 crew.
How old is Mariner of the Seas?
Mariner of the Seas's maiden voyage was on Nov 16, 2003, according to Royal Caribbean.
How many decks does Mariner of the Seas have?
15 decks in total, of which 14 are guest decks, per Royal Caribbean's fact sheet.
What are Mariner of the Seas's sister ships?
Other Voyager Class ships: Adventure of the Seas, Explorer of the Seas, Navigator of the Seas, Voyager of the Seas.
How many crew does Mariner of the Seas have?
Royal Caribbean lists 1,200 crew alongside 3,344 guests (double occupancy), or 2.79 guests per crew member.
Where was Mariner of the Seas built?
Mariner of the Seas was built at Kvaerner Masa-Yards, Turku, Finland, according to Royal Caribbean.
Sources
- Mariner of the Seas fact sheet (PDF), Royal Caribbean Press Center, Royal Caribbean Group. Accessed Oct 26, 2026. Used for: ship class, maiden voyage, gross tonnage, guests, crew, decks total, guest decks, staterooms, length ft, length m, beam ft, shipyard.
The Ship Sheet: the monthly cruise ship email
One email a month: new ships, changed figures and new comparisons. No spam.
We only use figures published by the cruise line. Spotted something out of date? Send a correction.