SOLDIER Ong Jia Hui drowned while training off Changi Naval Base - before the very eyes of his four instructors standing less than 10m away.
None of them saw him slip underwater on June 15.
At Second Sgt Ongs inquest on Thursday, the State Coroner blasted the four instructors lack of vigilance and found them responsible for his death through their negligence.
The Ministry of Defence had earlier said no safety regulations had been breached in the 24-year-old soldiers death.
Second Sgt Ong, who had been training with four other Singapore Armed Forces (SAF) regulars, was found lying on the seabed moments after the instructors did a headcount and discovered they were one man short.
His life jacket, which was later found to be defective, was never inflated.
The coroners report stated that as the leaking life vest was not activated, it did not contribute to Second Sgt Ongs drowning.
The SAF regular could not be revived and died in Changi General Hospital.
His SAF instructors - Master Sergeants Julian Tan, 32, and Tan Kang Choon, 33, First Warrant Officer Ho Yin Choy, 43, and Staff Sergeant Alex Chan, 28, now face the possibility of criminal charges. The Straits Times / Asia News Network