This is a shortened version of the 1947 "LORAN for Ocean Navigation" filmstrip produced by the Coast Guard as a sales pitch to commercial shipping lines to adopt LORAN (as a both a navigational aid and to assist in distress situations). Updated with a new narration track in place of the distorted period track, the film provides a brief overview of the operational theory behind LORAN.
Length: 2 Minutes, 1 Second
Image Date: 1947, edited 2012
Credit: National Air and Space Museum, Smithsonian Institution