A U.S. Navy Plebe crosses a rope on an endurance course. A U.S. Navy Plebe crosses a rope on an endurance course during Sea Trials at the U.S. Naval Academy in Annapolis, Md., on May 12, 2009. Based on the Navy's Battle Stations and the Marine Corps' Crucible, Sea Trials is the capstone training evolution for the Naval Academy freshmen class. The plebes navigate physical and mental challenges, including obstacle courses, long-distance group runs, damage control scenarios, and water training. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 798717-R-PKU00-340.jpg Photo Gallery