Raydist strip chart record used to keep track of individual navigation rates

Raydist strip chart record used to keep track of individual navigation rates. These strip charts required continuous monitoring by a watch-stander. Used to assure navigational accuracy during hydrographic surveying operations. First tests of Raydist on SOSBEE in 1954. Used for over 40 years with various systems

Photo Category: Charting - Navigation - Electronic - HF and MF Systems
Photo Location: Tampa Bay area
Photo Date: August 20, 1954