Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

pl23_theb2156.jpg

Prototype portable depth recorder used as part of 808 fathometer system

Image

Download ( 784 KB )

Permalink

https://www.noaa.gov/media/digital-library-photo/pl23theb2156jpg

Description

Prototype portable depth recorder used as part of 808 fathometer system.Bulletin 13 of the Association of Field Engineers, 1939, p. 102

Credit

Association of Commissioned Officers

Collection

Historic Coast & Geodetic Survey

Nautical Charting

Soundings

Acoustic Sound Systems

Keywords

Charting

Soundings

Electronic