On the third day of the search for the Titanic tourist submersible that went missing in the Atlantic Ocean, a sound believed to be a rescue request was detected from the submersible안전놀이터.

On the 20th (local time), CNN , citing a US government report, reported that as a result of the search team detecting sound waves that day, banging noises were heard.

According to the media, this noise was heard several times at 30-minute intervals, and it was also heard four hours after the sonar was additionally deployed.

This is believed to be the sound of the missing persons inside the submersible tapping the submersible to send a rescue signal, the media reported.

However, authorities have not yet been able to locate the missing submarine.

With less than 40 hours left before the golden hour, more ships and aircraft are joining the search mission.

Earlier, on the 18th, the tourist submersible ‘Titan’, which was exploring the underwater wreckage of the Titanic, went missing.

According to the US Coast Guard, the submersible lost its signal after about an hour and 45 minutes of submersion. In response, US and Canadian authorities are conducting air and water searches.

The missing submersible was launched by Oceangate Expedition, an American undersea exploration company. Five people were said to be on board, including British billionaire businessman and explorer Hamish Harding.

Experts are paying attention to the possibility that the submersible may have a power failure, flooding, or being caught in an underwater object.