Mariner of the Seas - December 18, 2025
The December 18, 2025 cruise on the Mariner of the Seas departs from Galveston, Texas. On this 4 Night Western Caribbean (Galveston Roundtrip) sailing, the ship will visit a total of 2 different cruise port destinations, including its departure port. The Mariner of the Seas sets sail on Thursday, Dec 18th and returns on Monday, Dec 22nd.
December 18, 2025
Dec 18th - Dec 22nd
Mariner of the Seas
Royal Caribbean Cruise Line
4 Night Western Caribbean
from Galveston, Texas
Cruise Price - Historic & Current
The graph below tracks historic price of the Mariner of the Seas cruise ship departing December 18, 2025. The most recent price for this sailing starts at $409 ($103 per night) for an Inside Cabin. Compared to the average price of $380 ($96 per night), this represents a recent increase of 7%.
Use the buttons below to toggle between cabin types.
Mariner of the Seas
MARINER OF THE SEAS SIZE
The Mariner of the Seas has a construction date of 2003 and a total size of 138,279 gross tons. The ship measures 1,020 feet (311 meters) in length. Mariner of the Seas is included in Royal Caribbean’s Voyager Class. At full capacity, the Mariner of the Seas holds 4,299 passengers. That includes 3,114 cruise vacationers and 1,185 staff members. The Mariner of the Seas total number of staterooms is 1,674.
Mariner of the Seas Size & Stats
- Gross Tonnage:138,279 GT
- Length:1,020 ft (311 m)
- Beam:127 ft (39 m)
- Draft:29 ft (9 m)
- Max Speed:27 mph (23 kn)
- Year Built:2003
- Years Served:2003-Present
- Capacity:3,114
- Crew Members:1,185
- Total on Board:4,299
- Total Staterooms:1,674
- Flagged Country:Bahamas
- Ship Cost:500 Million
- Status:active
To see how this compares, click through to see Mariner of the Seas age and stats vs all Royal Caribbean ships. There you’ll find graphs showing length, capacity, tonnage and more for this ship vs all in the fleet.
To check out the ship from top to bottom, click here for Mariner of the Seas Deck Plans.
Itinerary
Mariner of the Seas - December 18, 2025 - 4 Nights
| Day | Date | Port |
|---|---|---|
| 1 | Dec 17th | Galveston, Texas |
| 2 | Dec 18th | At Sea |
| 3 | Dec 20th | Cozumel, Mexico |
| 4 | Dec 20th | At Sea |
| 5 | Dec 22nd | Galveston, Texas |
Cruise Itinerary
The Mariner of the Seas sails on December 18, 2025 for a 4 Night Western Caribbean (Galveston Roundtrip). The ship will depart the port of Galveston, Texas at 3:00 PM and will return to the port of Galveston, Texas on Dec 22nd at 6:00 AM. During the 5-day journey, the Mariner of the Seas will visit 1 additional port and will spend 2 days at sea.
Galveston, Texas offers everything from entertainment to shopping, to over 32 miles of Gulf Coast beaches. Galveston's festivals, special events and attractions are enjoyable for islanders and tourists alike. Arts and entertainment is as much a part of the area's history as its Victorian architecture, and Galveston sparkles at night, from theater, music and dance, to reggae, rock and country.
Take advantage of the many on board activites during your day at sea. You'll have more than enough to fill your day!
Sitting just off the gorgeous Yucatan coast, Cozumel revels in its mythic white-sand beaches and world-class coral reefs. Yet Cozumel is also the last stronghold of the Mayas, who settled the island in 300 A.D. Residents still speak Maya, and sometimes wear traditional Mayan clothing. Nearby stand the great pyramids and temples of their ancestors.
Take advantage of the many on board activites during your day at sea. You'll have more than enough to fill your day!
Galveston, Texas offers everything from entertainment to shopping, to over 32 miles of Gulf Coast beaches. Galveston's festivals, special events and attractions are enjoyable for islanders and tourists alike. Arts and entertainment is as much a part of the area's history as its Victorian architecture, and Galveston sparkles at night, from theater, music and dance, to reggae, rock and country.