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History of the Atlantic Cable & Undersea Communications
from the first submarine cable of 1850 to the worldwide fiber optic network

1923 San Pedro - Catalina Island Cable

This single-wire 7-circuit telephone cable was laid in 1923 from San Pedro, California to Avalon, Catalina Island, by CS Dellwood for the US Army. The short run of cable was laid from a drum on deck rather than from a coil in the hold.

CS Dellwood laying the 1923 San Pedro - Catalina cable

The cable was operated for the Army by AT&T. Its manufacturer is not known, but it would have been an American rather than a British company. The cable construction is shown in the diagrams below - note the use of rubber insulation rather than the usual gutta percha. The conductor was one copper wire surrounded by twelve.

Cable core

Shallow water armoring

Deep water armoring

Research Material Needed

The Atlantic Cable website is non-commercial, and its mission is to make available on line as much information as possible.

You can help - if you have cable material, old or new, please contact me. Cable samples, instruments, documents, brochures, souvenir books, photographs, family stories, all are valuable to researchers and historians.

If you have any cable-related items that you could photograph, copy, scan, loan, or sell, please email me: [email protected]

—Bill Burns, publisher and webmaster: