List of oldest surviving ships
This is a list of the oldest ships in the world which have survived to this day with exceptions to certain categories. The ships on this list which include warships, yachts, tall ships, and vessels recovered during archaeological excavations all date to 1918 or prior. Vessels listed are sorted by date of launching as most accurately known. Many of the ships in the "Build location" column were built for use in other countries by the United Kingdom, which in the mid to late 1800s was a dominant worldwide ship builder. A majority of ships on  this list are found in museums, and include examples that are the last of their kind left in the world. List criteria. While this list includes the "oldest surviving" ships, many have since been restored, and/or reconstructed. Ships that have been exposed to the elements gradually deteriorate over time, thus no ship can be considered truly original due to part replacements during a ship's life. This leads to a known paradox called the "Ship of Theseus", making the definition of "original" unclear. An example is the : the original sank in 1820 and was raised and reconstructed three times. These  extensive reconstructions left little of the original ship remaining (nonstructural items). Another separate issue is incomplete ships due to weathering conditions caused by their status as a former shipwreck, or by sheer neglect. One example is the ship "Mary Rose", whose raised and preserved remains consist of only a partial hull. Those that remain underwater and intact are lumped into a separate category that focuses on shipwrecks, such as those found in the Black Sea. Many surviving old ships may also appear on other Wikipedia lists such as lightvessels. Many old lightvessels survive worldwide to this day, unlike ocean liners  of which there are very few pre-World War II examples. Oldest surviving by category. The following is a list of ships arranged by category. These include ships that are the oldest in the world by type and by function, they do not include ships known only for being the last of their kind. The cutoff date as with the list are ships constructed before 1919.