List of world's longest ships

The world's longest ships are listed according to their overall length (LOA), which is the maximum length of the vessel measured between the extreme points in fore and aft. In addition, the ships' deadweight tonnage (DWT) and gross tonnage (GT) are presented as they are often used to describe the size of a vessel.

The list includes the current record-holders, either as individual ships or ship classes, of each major ship type as well as longer vessels that have been scrapped.

The list does not include other floating structures, generally not self-propelled, such as mobile offshore drilling units (example, the 1,200,000 DWT Hibernia Gravity Base Structure) or mobile floating liquefied natural gas units (example, the 488 m (1,601 ft) long Prelude FLNG).

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