"sofar." YourDictionary, n.d. Web. 15 September 2018. <http://www.yourdictionary.com/sofar>.
sofar. (n.d.). Retrieved September 15th, 2018, from http://www.yourdictionary.com/sofar
A system for determining the position of survivors lost at sea by which an explosion is set off underwater, the time needed for the waves to reach three different locations is calculated, and the position of the explosion is ascertained by triangulation.