USS Petrel Football Helmet
USS Petrel (ASR 14) football helmet in the collection of the U.S. Naval Undersea Museum. U.S. Navy divers repurposed this 1950s-era football helmet for use aboard USS Petrel (ASR 14), a Navy submarine rescue ship, to protect their heads during jostling

Trident Missile Payload Section
, inertially-guided weapons that can hold up to eight nuclear warheads called multiple independently targeted re-entry vehicles (MIRVs). This Trident I payload section is outfitted with four simulated MIRVs. Since 1960, American ballistic missile…

Miller-Dunn Divinhood Style 3 Helmet
Miller-Dunn Divinhood Style 3 diving helmet in the collection of the U.S. Naval Undersea Museum. Navy divers used this open-bottom Miller-Dunn Divinhood Style 3 helmet during World War II to complete ship and equipment repairs in water less than 60 feet deep.…

Kaiten Type 1 (Version 2)
torpedo warheads. Kaiten proved largely unsuccessful as difficult controls and mechanical problems often caused failures before or during attacks; only two American ships were sunk by kaiten. In exchange, the Japanese suffered heavy losses: 80 kaiten…

Control Room Equipment from Nuclear-Powered Submersible NR-1
NR-1 control room equipment in the collection of the U.S. Naval Undersea Museum. From left to right, the control panels shown are sonar, ballast and trim/auxiliary control/ship's status, ship's control display, heading and speed/obstacle avoidance…

Control Room Equipment and Consoles from Nuclear-Powered Submersible NR-1
, ship control display, heading and speed display, camera status display, intercom and communications, and AN/UYK-44 computer. NR-1 was the U.S. Navy’s first and only nuclear-powered submersible, equipped with a miniature reactor that allowed her…