The Hunt for Red October (1990)

Few films place acoustic analysis so squarely in the spotlight. The sequences featuring sonar technician Jonesy interpreting faint waterfall displays and differentiating biological acoustic clutter from caterpillar drives are masterclasses in hydrophone tension. The sound mix contrasts the low, unnatural drone of magnetohydrodynamic propulsion with the piercing clarity of an active single ping, turning sonic detection into an exquisite game of chess.