The program explains the developing SOFAR underwater sound system through a naval family story, showing how long-range sound transmission can aid rescue work, locate undersea features and improve navigation and oceanographic research.

This recording comes from American History Radio Collection.

This surviving item is preserved as historical dramatization.

GRH/OTRR synthetic American-history archive containing dramatizations, speeches, news, music, interviews, and documentary recordings.

Listeners can expect mixed format in format.