PORTLAND, Maine — Faulty engineering led to the implosion of an experimental submersible that killed five people on the way to the wreck of the Titanic, the National Transportation Safety Board concluded in a report Wednesday.
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Debris from the Titan submersible, recovered from the ocean floor near the wreck of the Titanic, is unloaded June 28, 2023, from the ship Horizon Arctic at the Canadian Coast Guard pier in St. John's, Newfoundland.
Photos: Debris from implosion of Titanic-bound submersible is returned to land

Debris from the Titan submersible, recovered from the ocean floor near the wreck of the Titanic, is unloaded from the ship Horizon Arctic at the Canadian Coast Guard pier in St. John's, Newfoundland, Wednesday, June 28, 2023. (Paul Daly/The Canadian Press via AP)

Debris from the Titan submersible, recovered from the ocean floor near the wreck of the Titanic, is unloaded from the ship Horizon Arctic at the Canadian Coast Guard pier in St. John's, Newfoundland, Wednesday, June 28, 2023. (Paul Daly/The Canadian Press via AP)

Debris from the Titan submersible, recovered from the ocean floor near the wreck of the Titanic, is unloaded from the ship Horizon Arctic at the Canadian Coast Guard pier in St. John's, Newfoundland, Wednesday, June 28, 2023. (Paul Daly/The Canadian Press via AP)

A U.S. Coast Guard ship arrives in the harbor of St. John's, Newfoundland, on Wednesday, June 28, 2023, following the arrival of the ship Horizon Arctic carrying debris from the Titan submersible. The submersible owned by OceanGate Expeditions imploded on its way to the wreck of the Titanic. (Paul Daly/The Canadian Press via AP)

Debris from the Titan submersible, recovered from the ocean floor near the wreck of the Titanic, is unloaded from the ship Horizon Arctic at the Canadian Coast Guard pier in St. John's, Newfoundland on Wednesday, June 28, 2023. (Paul Daly/The Canadian Press via AP)

Debris from the Titan submersible, recovered from the ocean floor near the wreck of the Titanic, is unloaded from the ship Horizon Arctic at the Canadian Coast Guard pier June 28 in St. John's, Newfoundland.

Debris from the Titan submersible, recovered from the ocean floor near the wreck of the Titanic, is unloaded from the ship Horizon Arctic at the Canadian Coast Guard pier in St. John's, Newfoundland on Wednesday, June 28, 2023. (Paul Daly/The Canadian Press via AP)

Debris from the Titan submersible, recovered from the ocean floor near the wreck of the Titanic, is unloaded from the ship Horizon Arctic at the Canadian Coast Guard pier in St. John's, Newfoundland on Wednesday, June 28, 2023. (Paul Daly/The Canadian Press via AP)

Debris from the Titan submersible, recovered from the ocean floor near the wreck of the Titanic, is unloaded from the ship Horizon Arctic at the Canadian Coast Guard pier in St. John's, Newfoundland on Wednesday, June 28, 2023. (Paul Daly/The Canadian Press via AP)

Debris from the Titan submersible, recovered from the ocean floor near the wreck of the Titanic, is unloaded from the ship Horizon Arctic at the Canadian Coast Guard pier in St. John's, Newfoundland on Wednesday, June 28, 2023. (Paul Daly/The Canadian Press via AP)