He, however, did not say if the oil in the vessel spilt into the sea.
The tanker, MT Genessa, is anchored 15 nautical miles off Deendayal Port in Kandla.
The fire was reported at around 6 PM today.
The Indian Coast Guard swung into action and evacuated all the 26 crew members, two of whom suffered burn injuries.
"There was a fire in the crew compartment and efforts are underway to douse it," a Coast Guard official said.
He said a Dornier aircraft has been pressed into service to ascertain the extent of the fire.