Authorities in the United States and Canada are racing against the clock to locate a lost submarine that went missing during an expedition in the North Atlantic Ocean.
The search for the missing sailboat is already on its fifth day, and experts claim that oxygen supplies for the ill-fated watercraft have run out.
According to international media, all attempts are being made to transport all necessary apparatus, with activities being led by maritime experts and engineering consultants.
It has been learned that a Canadian plane and large ships are searching for the vessel and have detected thumping sounds from unknown sources.
Pakistani businessman Shahzada Dawood and his 19-year-old son Suleman Dawood, Stockton Rush, British millionaire adventurer Hamish Harding, and French diver Paul-Henri Nargeolet are among those inside the submarine.
The watercraft set out from its mother ship on Sunday morning to cruise to the remains of the legendary Titanic liner, but it lost contact after one hour.