Titan
Photos show what appear to be several pieces of the submersible being lifted from the ship, including the nose cone with its distinctive circular window.
The agency has convened a Marine Board of Investigation, its highest-level probe.
Dawood, who lost son Suleman and husband Shahzada Dawood in the disaster, said she was supposed to take that fatal voyage.
Christine Dawood was on board the host ship when the submersible carrying Suleman and Shahzada Dawood to the Titanic lost communications.
WHAT'S HAPPENING
Talk to someone who went on previous trips on the Titan submersible and they’re likely to mention a technology glitch.
That authorities found the missing Titan on Thursday was too much of a coincidence for the Tennessee senator.
Jay Bloom said he turned down repeat invites to participate in Sunday's dive with his son, who expressed concerns about the vessel's safety.
Suleman Dawood, 19, "wasn't very up for" the expedition, according to aunt Azmeh Dawood.
The announcement follows the search team finding debris near the Titanic wreckage that appeared to be from the Titan vessel.
Mike Reiss, who completed four dives with Titan operator OceanGate, said he signed "a waiver that mentions death three times on the first page."