2023 Titan submersible incident
On 18 June 2023, Titan, a submersible, went missing in international waters in the North Atlantic Ocean off the coast of Newfoundland, Canada.  The submersible had five people on board. It was on a tourist expedition to view the wreck of RMS Titanic. Communication was lost 1 hour and 45 minutes into its dive to the wreck site. The police were told when it did not come back at the right time later that day.