The Nautical Archaeology Society (NAS) is a charity registered in England and Wales and in Scotland and is a company limited by guarantee.The charitable aims and object of the company are to further research in Nautical Archaeology and publish the results of such research and to advance education and training in the techniques pertaining to the study of Nautical Archaeology for the benefit of the public.Nautical archaeology is an archaeological sub-discipline more generally known as maritime archaeology, which encompasses the archaeology of shipwrecks, underwater archaeology and archaeology of related features.The society's logo is derived from an ancient engraving depicting nautical activity.