Addressing a press conference on the eve of Navy Day, he noted that a submarine is a "dangerous platform" because it has explosives, fuel and a lot of equipment.
"In this environment, when procedures don't get followed, there is a room for error. And whenever there is a room for error, accidents take place. So, this is a situation like that where (while) carrying out a particular activity, procedures were not being followed," he said.
Dhowan said, "The BOI is in its process of evaluation. What I can share with you is that there are aspects related to procedures which need to be followed when you are handling equipment, ammunition or a submarine."
He said that the navy is a technologically advanced service where you have standard operating and safety procedures laid down for every aspect.
Asked if the accident was due to human error, Dhowan said it was a "very, very serious accident" as an explosion was not normally expected to happen in a submarine.