• Netflix is releasing a documentary about the OceanGate Titan submersible disaster.
• The sub imploded in 2023 while descending to view the Titanic wreck, killing all five people on board.
• The documentary takes a closer look at the incident and the late OceanGate CEO Stockton Rush.

An upcoming Netflix documentary is set to take a closer look at the Titan submersible's ill-fated journey to the wreck of the Titanic two years ago.

"Titan: The OceanGate Disaster" arrives on Netflix on June 11 and will examine the events leading up to the doomed expedition that killed OceanGate CEO Stockton Rush and four others after the vessel carrying them to view the wreck imploded in June 2023.

The trailer for the documentary shows interviews with several people close to the late exec and who worked for the expedition company.

"There was no way of knowing when Titan was going to fail," Rob McCallum, a former OceanGate advisor, says in the trailer. "But it was a mathematical certainty that it would fail."

The trailer also teases interviews with ex-OceanGate staff members like Tony Nissen, a former engineering director at the firm, Bonnie Carl, a human resources and finance director, and David Lochridge, an operations director who previously said he was fired after raising safety concerns about the sub.

In the trailer, Lochridge says he thought Rush "wanted fame" to "fuel his ego," while Nissen adds that he thought Stockton was "a borderline psychopath."

Elsewhere in the clip, Carl recalls her reaction after she said Rush announced she would be the company's next sub pilot: "Are you nuts? I'm an accountant."

As well as testimonies from key figures, "Titan: The OceanGate Disaster" will also feature "pivotal" audio recordings and footage from OceanGate's early days, per the documentary's synopsis.

Speaking in an interview with Netflix's Tudum, director Mark Monroe said he had been "horrified and mesmerized" by the coverage and social commentary on the sub and that he hoped the documentary could provide answers about how the disaster happened.

"The more I dug into this terrible tragedy, the more intrigued I became about how this could have ever happened in the first place, and who exactly was the man who built and then went down with this ship," he said. "We hope that this film can help provide answers to these very questions."

Earlier this week, the US Coast Guard released footage showing the moment that Rush's wife, Wendy Rush, heard the apparent sound of the Titan submersible imploding.

Wendy can be seen trying to contact the sub from a support vessel when a loud slamming sound can be heard through a monitor.

"What was that bang?" she said.

The submersible lost communication with the support vessel — the Polar Prince — around an hour and 45 minutes into its dive, sparking a dramatic four-day search and rescue effort.

Debris from the Titan was eventually found by a remotely operated vehicle around 500 meters (roughly 1,640 feet) from the bow of the Titanic, which lies around 12,500 feet below the surface.

Alongside Rush, British pilot and adventurer Hamish Harding, Pakistani businessman Shahzada Dawood and his son Suleman, and former French Navy diver Paul-Henri Nargeolet died in the incident.

• New video shows the moment the wife of the late OceanGate CEO heard the apparent sound of the Titan sub imploding.
• "What was that bang?" Wendy Rush said after a slamming noise could be heard through a monitor on the sub's support ship.
• All five passengers on the sub were killed as it descended to view the Titanic wreck in June 2023.

Video footage released by the US Coast Guard shows the moment the wife of the late OceanGate CEO Stockton Rush heard the apparent sound of the Titan submersible imploding.

In the video, Wendy Rush, a director at the ocean tourism company — which has since suspended all operations — can be seen attempting to contact the sub from the Polar Prince support vessel when a loud slamming sound can be heard through her monitor.

"What was that bang?" she said, before receiving a message saying the sub had dropped two weights, seeming to give her the impression the trip was going to plan. Analysts say the message may have been sent shortly before the sub imploded but a delay may have caused it to come through later.

The Titan sub imploded while descending to view the wreckage of the Titanic in the North Atlantic Ocean in June 2023, killing all five people on board.

The Titan lost communication with the Polar Prince around one hour and 45 minutes into its dive, sparking a frantic search effort involving US, Canadian, and French rescuers.

The vessel's wreckage was discovered by a remotely operated vehicle four days after it went missing, around 500 meters (roughly 1,640 feet) from the bow of the Titanic, per the Coast Guard.

OceanGate cofounder Stockton Rush, pilot and adventurer Hamish Harding, businessman Shahzada Dawood and his son Suleman, and former French Navy diver Paul-Henri Nargeolet were the passengers in the vessel.

OceanGate charged up to $250,000 per ticket to see the Titanic, which lies at a depth of around 12,500 feet.

A passenger waiver form for the Titan viewed by Business Insider in 2023 said the sub had successfully completed "as few as 13" out of 90 dives to the depth of the Titanic.

A new Netflix documentary scheduled to be released in June will take a closer look at what caused the tragedy.