Chief Boatswain Joe Dimartino instructing winch operators during CTD operations.CTD - Conductivity, Temperature, Depth measurements.MT. MITCHELL CTD's used to determine ocean sound velocity structure.Sound velocity information used to correct soundin
4/8/2019 11:48:06 AM
Date: 1991
Credit: Personnel of NOAA Ship MT. MITCHELL 1991
Location: Gulf of Mexico
Subject: Oceanography
Subject: -1970
Subject: Physical