New audio has been released from the Titan sub that went missing last summer, claiming the lives of all those on board.
The sub, operated by OceanGate and known as Titan, went missing on June 18 as it ventured to explore the wreckage of the Titanic.
After an hour and 45 minutes, it stopped sending signals back to its mothership, the Polar Prince, but the alarm wasn't raised until hours later.
As per Reuters, the dive of the Titan was delayed due to bad weather, but the expedition got underway at 12:00PM GMT.
When it stopped sending signals, it was reportedly situated just above the wreckage of the Titanic, and this was the last known location of the Titan.
The US Coast Guard wasn't alerted until 9:40PM on Sunday when they received reports that a submersible had failed to reemerge 900 nautical miles east of Cape Cod on the U.S. coast
Following this, a worldwide rescue operation was launched led by the Coast Guard, and despite finding banging sounds being picked up, the search proved unsuccessful, as it was later discovered that the sub had already succumbed to an implosion.
Now, in an upcoming British documentary from Channel 5 titled The Titan Sub Disaster: Minute by Minute, the public is getting its first listen to the eerie audio, described as resembling a person knocking against metal.
Former Navy submarine Captain Ryan Ramsey, featured in the documentary, remarked: "It could be somebody knocking. The symmetry between those knockings is very unusual. It’s rhythmic, it’s like somebody is making that sound, and the fact that it is repeated is really unusual."
Listen to the recording below:
Initial optimism that survivors might be signaling for help was dashed when it became evident that the noise couldn’t have been from the passengers and crew, who died instantly in the sub's catastrophic implosion two hours into its voyage.
While speculation arose that the knocking might be from the Titan's passengers, officials cautioned against jumping to conclusions, suggesting the sounds could have been environmental or from other vessels in the vicinity.
For families of the lost mariners, the sounds initially offered hope amidst the failed OceanGate expedition. However, the Odysseus 6K, the lead submersible of the search team, discovered the Titan's debris about 1,600 feet from the Titanic shipwreck's bow, dashing all hope.
Ten days after the Titan's disappearance on June 18, the Coast Guard announced the discovery of "presumed human remains" in the sub's wreckage.
Investigators believe the implosion occurred just 1 hour and 45 minutes into the dive, as the sub reached depths of around 12,000 feet, succumbing to immense water pressure.
The victims included OceanGate CEO Stockton Rush, French Titanic expert Paul-Henri Nargeolet, British billionaire Hamish Harding, prominent Pakistani businessman Shahzada Dawood, and his son Sulaiman Dawood.
Rush, who piloted the submersible, faced scrutiny for allegedly disregarding safety concerns regarding the vessel and its tourist voyages to the Titanic.
