李舜臣
About three weeks after the Battle of Okpo, Yi Sun-sin and Won Gyun sailed with a total of 26 ships (23 under Yi Sun-sin) toward the Bay of Sacheon after receiving an intelligence report of the Japanese presence. Yi Sun-sin had left behind his fishing vessels that made up most of his fleet in favor of his newly-completed turtle ship. At Sacheon, the Japanese ships were anchored in the bay below a promontory where the Japanese had set up a command base.