Jules Verne's Mysterious Island: Nemo's Diver Sabotages Ship Chains

Undersea sabotage technology and human endurance are on display as a near-naked diver clings to the massive anchor chains and rudder post of a sailing vessel at the waterline, using a wrench or cutting tool to disable the ship. The scene captures the tension of covert naval warfare — a precursor to frogman operations — rendered with extraordinary atmospheric cross-hatching that evokes cold, dark seawater and the crushing weight of iron chains above.