OceanGate said it has halted all exploration and business operations, just a few weeks after five people were killed in a company-owned submersible on an expedition to see the wreck of the Titanic. A banner on the company’s website announcing the news offered no further details. Read More: The Titan Sub and the Dangers of Unregulated Deep-Sea Tourism Last month, a multinational search effort took place after OceanGate’s Titan submersible went missing near the Titanic’s resting place in the North Atlantic Ocean.