The Explorer of the Seas is a "mega-ship," one of the "Voyager-class" ships, with a gross tonnage of 138,000, and passenger capacity of 3,114. For more information on this ship, click here.
This ship is unique in that in addition to a passenger cruise vessel, it is a research ship, housing both an oceanographic and meteorological lab aboard the ship. To learn more about the labs, click here.