CURV-III

CURV-III was the fourth generation of the United States Navy Cable-controlled Undersea Recovery Vehicle (CURV). CURV was a prototype for remotely operated underwater vehicles and a pioneer for teleoperation. It became famous in 1966 when CURV-I was used to recover a hydrogen bomb from the floor of the Mediterranean Sea. In 1973, CURV-III performed the deepest underwater rescue in history when it rescued two men 1,575 feet (480 m) from the ocean surface who were stranded 76 hours in the submersible Pisces III with just minutes of air remaining. The CURV-III became known in the Great Lakes region in 1976 when it was used to survey the wreck of the SS Edmund Fitzgerald. CURV-21 is the current generation that replaced CURV-III.

CURV was developed by Space and Naval Warfare Systems Center San Diego (SPAWAR) in the early 1960s. It was initially designed to recover test ordnance lost off San Clemente Island at depths as great as 2,000 feet (610 m). CURV was the pioneer for teleoperation. CURV-III is the fourth generation of CURV. After the Space Shuttle Challenger disaster, CURV III was transferred to the Navy's Supervisor of Salvage who directed that it be upgraded from 10,000 feet (3,000 m) operations to 20,000 feet (6,100 m). The CURV-21 is the next generation following CURV-III and was built as its direct replacement.

CURV-III had a functional design capable of operations at 10,000 feet (3,000 m). It had an open metal frame that was 6.5 feet (2.0 m) by 6.5 feet (2.0 m) by 15 feet (4.6 m), weighed approximately 5,400 pounds (2,400 kg), and was slightly buoyant in water. A cable and surface equipment enabled deployment and operation of the vehicle from a surface support ship. The CURV-III carried:

[T]wo Vidicon television cameras, four mercury-vapor headlights, two mercury-vapor spotlights, and a 35-millimeter camera with a 500 frame color film capacity and strobe light ... mounted on two independent pan-and-tilt units, each with 360 degrees of lateral and 180 degrees of vertical movement. The vehicle thus has full viewing and self-inspection capability.

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