English: The principal tidal datums related to a beach profile. The intersection of the tidal datum with land determines the landward edge of a marine boundary. From NOS Tidal Datums Pub (on Naval Postgraduate School).
http://www.oc.nps.navy.mil/nom/day1/partc.html
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page: The principal tidal datums related to a beach profile. The intersection of the tidal datum with land determines the landward edge of a marine boundary. From NOS Tidal Datums Pub (on Naval Postgraduate School). http://www.oc.nps.navy.mil/nom/day1/par