Accession Number : AD0653445

Title :   PORTABLE DEPTH ECHO SOUNDING TESTS-MODIFIED RAYTHEON DE-723B FATHOMETER WITH A NARROW BEAM TRANSDUCER.

Descriptive Note : Informal rept.,

Corporate Author : NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C

Personal Author(s) : Tselepis,George

Report Date : MAY 1967

Pagination or Media Count : 33

Abstract : A series of tests of a portable Raytheon DE-723B fathometer were made in the Anacostia and Potomac Rivers to evaluate over-the-side and through-the-hull transmission at various speeds. The over-the-side transducer mount provided high resolution at speeds up to 10 knots. Transmission through the steel hull of an LCM-6 (Landing Craft Medium) is feasible at speeds up to 3 knots using maximum sensitivity settings. Location of the transducer over-the-side near the pilot house and rigged to minimize vibration is recommended for surveys using LCM-6 craft.

Descriptors :   (*DEPTH FINDING, *DEPTH INDICATORS), (*NAVIGATIONAL AIDS, NAVAL RESEARCH), POTOMAC RIVER, TRANSDUCERS, NARROWBAND, SOUND TRANSMISSION, SHIP HULLS, MARINE ENGINEERING, LANDING CRAFT, PORTABLE EQUIPMENT, VIBRATION, FEASIBILITY STUDIES

Subject Categories : Physical and Dynamic Oceanography
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE