Images of the vessel show those onboard would have limited space to stand or sit.
The company has taken people on tours of the Titanic site since 2021, and guests have paid $250,000 to travel to the wreckage.
As of Tuesday morning, three of them had been identified: Hamish Harding, a British businessman and explorer, and the Pakistani businessman Shahzada Dawood and his son, Suleman.
Where is the Titanic wreck, exactly?
Once the biggest steamship in the world, the Titanic hit an iceberg four days into its first voyage, in April 1912, and sank to the bottom of the Atlantic.
Persons:
OceanGate, Hamish Harding, Shahzada Dawood, Suleman, Harding, Dawood
Organizations:
Blue Origin, Engro Corporation
Locations:
British