The NTSB based its newly published reports on a study of debris that was brought up from the seafloor, plus an examination of carbon-fiber samples that were cut off the ends of OceanGate’s hulls.

Engineer Don Kramer told a Coast Guard panel there were wrinkles, porosity and voids in the carbon fiber used for the pressure hull of OceanGate’s Titan submersible. Two different types of ...

Don Kramer, the acting chief of the NTSB's materials laboratory, testified during the U.S. Coast Guard's hearing into the June 2023 implosion of the OceanGate submersible while on a deep-sea dive ...

Engineer Don Kramer told a Coast Guard panel there were wrinkles, porosity and voids in the carbon fiber used for the pressure hull of OceanGate's Titan submersible. Two different types of sensors ...