Helicopters and divers scoured the waters off India’s financial capital of Mumbai on Thursday in a search for survivors of a freak boat accident that killed at least 13 people a day earlier, three navy personnel among them, officials said.A naval speedboat lost control and collided with a privately owned vessel taking tourists to the nearby Elephanta caves, famed for their rock art. The ferry capsized as a result, but 114 people were rescued.Of the 114 rescued, 97 were stable, four in critical condition and 13 dead, the municipal corporation said on messaging app WhatsApp.Navy and coast guard vessels joined in to search the harbour for at least two people still believed to be missing, an adult and a child, said a naval officer, who sought anonymity as he was not authorised to speak to the media. The officer said the accident happened during the trial of a new type of engine for the speedboat. “It appears that the engine got stuck at maximum throttle but we will know better once the inquiry is completed,” the officer said.A naval spokesperson did not immediately respond, when asked for comment on the remarks.Television channels showed a speedboat with at least five on board crashing into the passenger vessel.Water started gushing into the privately-owned Neelkamal as soon as it was rammed, witnesses said.Prime Minister Narendra Modi offered condolences to the bereaved, offering relief payments of Rs200,000 ($2,400) to the next of kin, and Rs50,000 ($600) for each of the injured.“The boat mishap in Mumbai is saddening,” he added in a post on X.