This unbound logbook contains jet net data and flowmeter readings for Vema cruise 24 from February 23 to December 13, 1967. Jet net data is recorded on typed worksheets that record the following information: jet net no., IKMWT no., coordinates, true depth of two, surface temperature and salinity, temperature and salinity at sampling depth, light transparency, ship's speed, sound records, start and finish sample times, sunrise, sunset, moon, and remarks or notes. The format for recording jet net data changes from the date July 23 on. These forms record the following data: ship/cruise, shop sta., sample, no. of sample, date, quantity of containers this sample, type tow, vol. H20 filtered, flowmeter information, displacement vol., start and finish data for (pit log, coordinates, time, depth range, surface temp.), ship speed, temp. for air and surface water, sky conditions, cloud cover, moonlight, BT, hydro sta. no., salinity, depth to bottom, jet net, mesh aperture, TDR, mouth opening, flowmeter type, depth telemeter, rustrak recorder, opening-closing device, comments, and observer name. Some jet net data sheets have stapled to them a time-depth recorders (made by Benthos, Inc), which are approximately 3 inches in diameter. Each of these has a date, time, coordinates, ship name, recorder number, (and a place to record calibration).
Many of SIA's holdings are located off-site, and advance notice is recommended to consult a collection. Please email the SIA Reference Team at osiaref@si.edu.
