In gross tonnage, how much larger is the cruise ship “Wonder of the Seas” compared to the RMS “Titanic”?

Royal Caribbean's “Wonder of the Seas” is among the largest cruise ships in the world, the fifth Oasis Class cruise ship to be launched and, in 2022, is the largest cruise ship in the world.

The RMS “Titanic” is probably the world’s best-known ocean liner because of its dramatic loss in April 1912.

The comparison of ships by size tricky because of the irregularity of their shape and the variety of criteria that could be used for the comparison. The criterion that is most commonly used is the gross tonnage (GT) of the ship. GT, like the predecessor criterion used up to 1969, gross registered tonnage (GRT), is not, as one might suppose, a measure of weight, but of volume. GT is a function of the volume of all of a ship's enclosed spaces (from keel to funnel) measured to the outside of the hull framing. GT and GRT differ slightly because of the way the spaces in the ship are counted, but the numerical value for a ship's GT is always smaller than the numerical values of GRT.

The GT of “Wonder of the Seas” is 236,857. The GRT of “Titanic” was 46,328. A simple calculation shows that “Wonder of the Seas” must be about five times the size of the “Titanic.”