The video documentation of the cargo ship El Faro and the associated debris field has been completed but the vessel’s voyage data recorder was not located.

“Over the years we’ve completed many investigations without the aid of recorders and other investigative tools,” said NTSB Chairman Christopher A. Hart. “While it is disappointing that the voyage data recorder was not located, we are hopeful that we’ll be able to determine the probable cause of this tragedy and the factors that may have contributed to it.”

The 790-foot ship went missing on Oct. 1 during Hurricane Joaquin and was located on Oct. 31 in about 15,000 feet of water in the vicinity of its last known position near Crooked Island, Bahamas.

Click here for the official NTSB announcement and click here for a report by The Maritime Executive.