The STD recorder which provided rapid recording of salinity, temperature, and depth. Caption states that this instrument was used while the ship was underway.

Image ID: fizh0065, NOAA's Historic Fisheries Collection
Location: Hawaii
Photo Date: 1970 circa
Photographer: Jerome S. W. Marr, BCF
Credit: U.S. BCF Biological Laboratory, Honolulu, Hawaii; NOAA Central Library Historical Fisheries Collection

• High Resolution Photo Available