The F.S. Loop was a three-masted wooden schooner built in 1907 in Coos Bay, Oregon, by Kruse & Banks Shipbuilding.  She had a colorful career, described by commercial diver E.R. Cross in a 1956 issue of Water World magazine.  "Her 41-year life," he wrote, "had been alternately chapters of accidents and illustrations of misadventure.  Strandings, shifting cargoes of lumber, near capsizings, broken masts, shredded sails from the storms she had bested, and men lost overboard forever to the relentless sea had been her lot.  Yet she had sailed on, living a long and prosperous life compared to the average life of a seagoing vessel." <P>The Loop sank in the Los Angeles harbor in 1945.  Because she was a hazard for other ships, attempts were made to float the Loop and tow her to a deep-water grave.  She was resistant and ultimately sank three times, the final time just outside the harbor's breakwater.  Cross was hired to dynamite her in 1948.