As many as 55 Chinese sailors are feared dead after their nuclear submarine became ensnared in a trap apparently set up for British sub-surface vessels, UK’s Daily Mail reported on Tuesday. A secret report reveals that the crew perished due to a catastrophic failure of the submarine’s oxygen systems, leading to poisoning, the British newspaper said. The Chinese PLA Navy submarine ‘093-417,’ including its captain Colonel Xue Yong-Peng, along with 21 other officers, is among the deceased. China officially denies the incident and declined international assistance. According to the UK report, on August 21, an onboard accident occurred during a…