Was he wearing a life jacket? And would it have saved him if he had worn one?
Questions still abound as the family of Mr Goh Chuan Kiet held a wake for him at their Ang Mo Kio Avenue 3 flat on Thursday.
The 23-year-old undergraduate had gone missing after a paddleboarding outing in the sea off Changi on Sunday.
After an extensive search lasting more than 48 hours, his shirtless body was eventually found on Tuesday evening, about 500m from Tanah Merah Ferry Terminal.
His body is now at the Health Sciences Authority, the family said.
Newspapers had reported that Mr Goh was not wearing a life jacket at the time of the accident and was not leashed to the board he was on.
Police declined to reveal if the body was found with a life jacket.
But his family is adamant that he was unlikely to not have worn one.
Mr Goh's father, Mr Goh Kwee Lam, 60, a bus technician, told The New Paper that his son was a responsible and careful person, despite being an adrenaline junkie.
Speaking in Mandarin, the elderly Mr Goh said: "He was an officer in the army who performed logistics-support duties for his unit. He knew that safety protocols were important, so of course he would wear a life jacket.