Through chilling winds and choppy seas, five-man crews aboard small, gray security boats worked tirelessly for 10 days patrolling the waters around a massive 348-foot petroleum vessel near the coast of Pohang, South Korea. Boat crews from Port Security Unit (PSU) 313 worked night and day to enforce a safety zone around U.S. Naval Ship Vice Adm. K.R. Wheeler and an eight-mile submerged pipeline that extended from the ship to the shores of Dogu Beach. During Combined Joint Logistics Over-the-Shore Exercise (CJLOTS)…