The blat reportedly occurred on a drilling vessel Sagar Bhushan of Oil and Natural Gas Corporation Limited (ONGC).
According to the ANI news agency, the police and fire brigades are working at the scene, while the fire has been brought under control.
At least 11 people have reportedly been injured, while two people have been reportedly trapped in the ship.
#UPDATE Five dead, three injured after explosion due to fire on-board a ship, that was in dry docks. Fire under control after Naval fire tenders were pressed into service.— ANI (@ANI) 13 февраля 2018 г.