Investigating the fatal Titan submarine disaster

After an implosion on a Titanic dive, investigators search for the truth.

Source: https://www.bbc.co.uk/iplayer/episode/m002ctw7/implosion-the-titanic-sub-disaster?at_mid=QIox1h6tBq&at_campaign=Implosion_The_Titanic_Sub_Disaster&at_medium=display_ad&at_campaign_type=owned&at_audience_id=SS&at_product=iplayer&at_brand=m002ctw7&at_ptr_name=bbc&at_ptr_type=media&at_format=image&at_objective=consumption&at_link_title=Implosion_The_Titanic_Sub_Disaster&at_bbc_team=BBC