Below (2002)

David Twohy merges naval claustrophobia with psychological horror aboard an American submarine patrolling the Atlantic during the Second World War. The audio mix leans into the uncanny resonance of the hull, contrasting the nervous silence of evasion with unnatural knocking sounds echoing outside the pressurised shell. It demonstrates how prolonged confinement in an underwater acoustic vacuum unhinges human perception and magnifies every ambient vibration.