MUMBAI, Jan 18 (Reuters) - Three Indian Navy personnel were killed in an explosion on a ship at a naval dockyard in Mumbai on Tuesday, the navy said. It gave no reason for the blast but said a board of inquiry would investigate. "The ship"s crew responded immediately and quickly brought the situation under control. No major material damage has been reported," the navy said in a statement. The explosion happened in an internal compartment on board a naval vessel, Ranvir, which had been on operational deployment from the Eastern Naval Command since November and was due to return to base port shortly, the statement said.