230 



Transforming samplers, 7 

 Oceanographic Vessels, Considera- 

 tions of, 123-138 



Acoustic characteristics of, 125 

 Anti-roll devices, 138 

 Auxiliary machinery, 126 

 Control of, 128 

 Main engines, 126 

 Need for, 123 



Oceanographic equipment, 127 

 Oversize rudder, research ves- 

 sel, 125 



Performance and design specifi- 

 cations, 127 

 SUITLAND, 129 

 Type of, 124 

 Winches, 127 

 Orange peel dredge, 50 

 Oscillators, high frequency in 

 chemistry, 186 

 Oscilloscope, 5 



Parrack and Jensen recording 



salinity nneter, 180 



Passive listening -- see Acoustic 



Instrumentation 



Pentolite, 109 



Peterson grab, 42, 195 



Phonograph recorder, 105 



Photographic recorder, 63, 105 



Phytoplankton, sampling of -- see 



Biological Instruments 



Pier-mounted gages, 149 



Pipe dredges, 196 



Pioto-type current meter, 21 



Plankton sampling equipment -- see 



Biological Instruments 



Plankton sorter, mechanical, 46 



Plastic bottles for water sannples, 



98, 167, 189 



Polarographic measurements, 185 



Photography in sea-ice studies, 91 



Photography, underwater, 9, 199 

 Bathygraf, 44 

 in biological studies, 44 

 Benthograph, 44 

 Commercial cameras, 44 

 in ocean floor studies, 29 

 Remotely operated camera, 44 

 Salt-ballasted cameras, 88 

 E.N. Thorndike camera, 205 



Pratje underway sampler, 195 



Precision thermistats, 167 



Psychrometer, 216 



Purse seining, mid-depth, 50 



Radar, 91, 217 



Radiation measurements -- see 



Air-Sea Boundary Processes 



Radiochemical measurements, 



185 



Rayleigh disk, 140 



Reagent dispenser, automatic, 



186 



Recording methods in refraction 



studies, 78 



Recorder 



Magnetic tape, 63, 105 

 Phonograph, 105 

 Photographic, 63, 105 

 Unattended, 18 

 Wave -- see Wave Measure- 

 ments 

 Wire, 105 



Recording inclimometer, 21 



Reflection nneasurements, 72 



Refraction measurements, 79 



Refractometer, 217 



Reversing thermometers, 56 

 Reliability of, 68 



Ross snapper, 42 



Salinity measurements -- see 

 Chemical Measurements and Air- 

 Sea Boundary Processes 

 Salinity- temperature-depth re- 

 corder (STD), 1, 168, 186 

 Salinometer for brackish water, 

 170 



SAN PABLO, 128 

 Seagoing polarographic instru- 

 ment, 167, 168 

 Sea-Ice Problems, 85-100 



Facilities for sea-ice studies, 

 86 



arctic stations, 91 



aircraft, 89 



land and ice vehicles, 91 



submarines, 88 



supporting electronic gear, 



92 



surface vessels, 86 

 Interactions of ice and bound- 

 ing Media, 94 



Physical and chemical prop- 

 erties of sea ice, 93 

 Sediment traps, 208 

 SEDOV, 86 



Seismic methods in sea-ice 

 studies, 90 



Seisnnic reflection, 78 

 Seismic refraction, 72 



