On December 17, 1917, the USS F-1 submarine sank off California, resulting in the loss of 19 crew members during a training accident. Recently, scientists from the Woods Hole Oceanographic Institution captured high-definition images of the wreck, located over 1,300 feet underwater, using advanced imaging technology and vehicles like Alvin and Sentry. The team conducted seven dives, creating detailed maps and 3-D models of the submarine while honoring the lost sailors with a remembrance ceremony aboard the research vessel Atlantis.