Charles Momsen - The Squalus Rescue

The Squalus Rescue

Momsen, already famous for the invention of his Momsen lung, achieved even more fame for directing the rescue and recovery of the 33 crewmen of Squalus, which sank in May 1939 in 243 feet (74 m) of water off the Isles of Shoals, New Hampshire. Working from the submarine rescue ship USS Falcon (ASR-2), Momsen instructed the team of deep-sea divers as they dived to the submarine and attached cables to the rescue chamber. Commander McCann supervised rescue chamber operators as it made four dives to bring the submariners to the surface and a fifth to check the flooded aft section for survivors. The fourth dive was marred by a cable jam, and the chamber had to be hauled to the surface by hand over hand pulling by all on board. All 33 surviving crewmen were rescued.

Momsen led the effort to salvage the Squalus, which took 113 days. She was taken to the drydock at the Portsmouth Navy Yard.

Along with Commander McCann, Momsen received a letter of commendation from President Franklin D. Roosevelt for the successful rescue of the crewmen from the Squalus and the subsequent salvage of the submarine. After her repairs, the Squalus was renamed the USS Sailfish, and the name Squalus was never used by the U.S. Navy again.

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