Accession Number : ADD001506

Title :   Underwater Low Frequency Sonic Communication.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Tyrrell,Warren A

Report Date : 14 May 1974

Pagination or Media Count : 7

Abstract : The patent relates to very low frequency sound wave signaling and communication through sea water over long distances.

Descriptors :   *Underwater communications, *Patents, Very low frequency, Underwater sound, Long range(Distance)

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE