Get involved Education International System Introduction to Foreshore and Underwater Archaeology The NAS curriculum starts with an Introduction to Foreshore and Underwater Archaeology. This is a one day course introducing the student to some of the basic concepts of underwater archaeology - what archaeology is and how it can apply to the underwater environment. Contact your local Training Partner to enquire about upcoming course opportunities. There are lectures on topics such as law and ethics, sites around the world and technology in use today. The core of the course is an introduction to survey methods and plotting. Two hours are then spent in the pool or confined openwater (for the divers) or on the deck (for non-divers). Finally back in the classroom, the measurements are plotted on paper. Survey methods used are datum off set, trilateration and use of a drawing square.