This item is part 1 of a 2 part unbound logbook from Conrad cruise 12 from January 1968 to June 1969. Part 1 includes sample data sheets from January 10 to June 25, 1968 and plankton sample log sheets from October 2, 1968 to February 27, 1969. Summary of route: Starting point is off the coast of the southeast U.S. They sail into the Gulf of Mexico then the Caribbean Sea, then North Pacific Ocean. They sail near Hawai'i, then into the South Pacific, into the Coral Sea, northeast to the Philippine Sea, then East China Sea, and back to the Philippine Sea. Locations covered by the plankton log sheet route: North Pacific near Hawai'i, South Pacific, Southern Ocean, South Atlantic. Sample data sheets include the following information: ship-cruise, ship station, sample and number of samples, coordinates, date, local start and finish time, duration, wire angle, TDR no., corrected depth range, type tow, opening-closing, sampler type, ship speed, TSK flowmeter no. and reading, temperature, salinity. Logs also include the following environmental data: surface water temp., air temp., sky conditions, cloud cover, sea conditions, wave height, wind speed, water transparency, BT slide info, BS slide info, Hydro station no. and type, surface salinity sample no., core no., depth to bottom, other sample information, comments (successful tow? If not, why?), observer name. The back (verso) of some these forms records wire angle and hydro station data. Some sheets include time-depth recorders, (made by Benthos, Inc), which are approximately 3 inches in diameter. Plankton sample log sheets record IBM serial number, ship/cruise, sample number, no. of samples, coordinates, upper sampling depth, deeper sampling depth, date, time, duration, device, mesh size, type tow, vol. water filtered, speed, sea state, temperatures, calibration, salinity, wind, wire angle, conditions, depth to bottom, hydro station data, flowmeter reading.
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