Which country has the oldest navy?
Short answerThe Royal Navy is a leading contender, but the result depends on how country, navy, continuity, and founding date are defined.
NotesClaims to the oldest navy depend on how both a country and a navy are defined. The founding date used in the comparison also changes the result. The Royal Navy is offered as a leading contender for long continuity, while other navies can make competing claims. Those definitions would have to be agreed before selecting a single oldest service.