Korean vessels fired volleys of cannonballs into the Japanese formation. The Korean ships then engaged in a free-for-all battle with the Japanese ships, maintaining enough distance to prevent the Japanese from boarding; Yi Sun-sin permitted melee combats only against severely damaged Japanese ships. During the battle, the Korean navy made use of a metal-cased fire bomb that caused substantial damage to Japanese deck crews, and caused fierce fires on board their ships. According to the Wakizaka ki:"A man called Manabe Samanosuke was a ship's captain that day, and the ship he was on was set on fire. This tormented him, and saying that he could face meeting the other samurai in the army again, committed suicide and died". Yi noted that "countless numbers of Japanese were hit by arrows and fell dead into the water", but also complained that "...about four hundred exhausted Japanese finding no way to escape, deserted their boats and fled ashore". The battle ended in a Korean victory, with Japanese losses of 59 ships – 47 destroyed and 12 captured. Not a single Korean ship was lost during the battle. Several Korean prisoners of war were rescued by the Korean soldiers throughout the fight. Wakisaka Yasuharu escaped due to the speed of his flagship. When the news of the defeat at the Battle of Hansan Island reached Toyotomi Hideyoshi, he ordered that the Japanese invasion forces cease all further naval operations. Battle of Angolpo and Danghangpo Yi Eok-gi with his fleet joined Yi Sun-sin and Won Gyun, and participated in a search for enemy vessels in the Gyeongsang Province waters. On July 13, the admirals received intelligence that a group of Japanese ships including those that escaped from the Battle of Dangpo was anchored in the Bay of Danghangpo. On August 16, 1592, Yi Sun-sin led their fleet to the harbor of Angolpo, where 42 Japanese vessels were docked, in the Battle of Angolpo. After a brief skirmish he ordered a false retreat to the open ocean. The Japanese fleet pursued the Korean fleet, with the flagship taking the lead. However, as the Japanese ships reached the open sea, Admiral Yi ordered the panokseon warships to encircle the Japanese fleet. Surrounded, the Japanese fleet was destroyed. Battle of Busan A naval engagement took place on 1 September 1592 during the first phase of the Japanese invasions of Korea. It was a Korean surprise attack on the