The PLA Navy sank the Kuomintang Navy submarine chaser Jianmen and Zhangjiang in the waters east of Dongshan Island in Fujian. At 5: 00 on August 5th, 1965, the flagship Jianmen of the Second Fleet of the Kuomintang Navy Patrol set sail from Zuoying Port, Taiwan Province, in an attempt to transport bandits to Sujianjiao and Gu Lei Pass in southern Fujian. The South China Sea Fleet of the People's Navy decided to attack with 1 escort brigade and 1 speedboat brigade.

On August 6th, a fierce battle was launched at 1: 50, and Zhangjiang was sunk at 3: 33, and Jianmen was sunk at 12 minutes later. The battle lasted for 3 hours and 43 minutes. Major General Hu Jiaheng, commander of the patrol second fleet, was killed 170 people, and Wang Yunshan, captain of the "Jianmen", was captured by 33 people. China's Ministry of National Defense awarded the title of "War Hero" to Xiande Mai, an engineer with the number of 6 1 1.

Battle results and historical evaluation

The battle lasted 12 hours and 45 minutes, and the battle with the enemy lasted 3 hours and 43 minutes. After the founding of China People's Liberation Army, it won the largest naval annihilation war. Wang Yunshan, the captain of Jianmen, was captured, 33 people were killed and 28 injured.

The participating troops fought bravely, and the Ministry of National Defense issued a decree to reward the participating troops and awarded Xiande Mai the honorary title of combat hero; The navy awarded 6 1 1 escort boat and 1 19 torpedo boat the titles of "hero boat at sea" and "hero speedboat". This battle is a famous "86 naval battle" with the largest number of enemy fighters, the greatest achievement and far-reaching influence in the history of the new China navy. This naval battle gave a great shock to the Kuomintang Party, government and army system that occupied Taiwan Province Province.