Beijing, June 13: Several senior Chinese Naval officers have been dismissed or demoted following a probe that "operational errors" were to blame for the country's worst-ever reported naval disaster last month that claimed the lives of 70 elite submariners The Central Military Commission had sacked the Chinese People's Liberation Army Navy (PLAN) commander, Admiral Shi Yunsheng and the political commissar Yang Huaiqing and appointed Zhang Dingfa and Hu Yanlin in their place.

Two senior Chinese Naval officers have also been demoted following the release here today of the results of an investigation into the May 2 accident on submarine no. 361 of the Navy of the Chinese People's Liberation Army.

Ding Yiping, commander of the North China Sea (Beihai) fleet, and Chen Xianfeng, political commissar of the Beihai fleet, were demoted after the Central Military Commission found them to be responsible for the accident, caused by improper direction of the vessel's operations.

Eight other officers responsible for the accident were either dismissed or demoted.

Seventy sailors on board the submarine died in the accident in the area east of the Neichangshan islands off Shandong province, east China.

The chairman of the Central Military Commission, Jiang Zemin and Chinese president and general secretary of the ruling Communist Party, Hu Jintao had pledged to the nation that those responsible for the incident would be punished.

Bureau Report