Explorer of the Seas is the second in a series of five "Voyager-class" cruise ships for Royal Caribbean Cruises Ltd. The delivery of Explorer of the Seas took place on 2000 at STX Finland Turku shipyard.
The total length of the ship is 311.1 metres (1020 ft), the breadth is 38.6 meters (126 ft) at waterline level (49.1 metres / 161 ft breadth at the bridge wings) and the height is 72.3 metres (237 ft) from keel to the top of the funnel. With a gross tonnage of approx. 140,000, a passenger capacity of 3,800 passengers and a crew capacity of 1,200 persons, totaling some 5,000 people onboard, the Voyager-class cruise ships are among the biggest cruise ships in the world.
The cruise ship features a four deck high horizontal promenade, the Royal Promenade, a design featured for the first time on this Voyager-class cruise ship series. The length of the promenade is some 120 metres, and it has in each end an 11 deck high atrium, the Centrums. The Royal Promenade also features inside staterooms with a view. Almost 10 percent of the staterooms have bay windows overlooking the Royal Promenade.
The big theatre seats 1,320 guests and there are numerous restaurants onboard. The main restaurant is three decks high, and seats a total of 1,900 in five distinct areas. In addition, there is an ice skating rink onboard, Studio B, seating 900 passengers, a rock climbing wall and a wedding chapel highest up.