day, for most species . 



Trolling 



Three -ounce red and white nylon jigs were 

 trolled at 9-10 knots between all stations 

 during daylight hours, and hand-lines using 

 cut or live bait were fished on some shallow 

 stations. All fish caught were identified, 

 weighed, and measured, and stomach con- 

 tents were preserved. 



OCEANOGRAPHIC METHODS AND 

 PROCEDURES 



Standard methods employed by the U.S. 

 Navy Hydrographic Office were used aboard 

 the Gill and in processing the data. 



Salinity, temperature, and density pro - 

 files were prepared by Mr . Dean Bumpus of 

 the Woods Hole Oceanographic Institution. 



NARRATIVE ACCOUNT OF CRUISE 1 



The Theodore N . Gill departed from 

 Brunswicic, Georgia on February 10, 1953, 

 and proceeded to the standard station along 

 the track as shown in Figure 4. Hourly bathy- 

 thermograph observations were made while 

 enroute, except when passing through the Gulf 

 Stream and the Antilles Current when BT low- 

 erings were made every half hour . The site 

 was reached on February 12. Nine nansen 

 bottle casts were made to 700 meters, at 

 intervals of about two hours. Half-hourly 

 bathythermograph observations, Secchi disc 

 readings during daylight casts, simultaneous 

 routine meteorological observations, and 

 special plamaon tows for deep scattering layer 

 studies were also made during the occupation 

 of the standard station. Thirty-four hours 

 (interrupted on February 13 by a trip to 

 Nassau, BWI, for winch repairs) were spent 

 on the standard station . 



Upon completion of the standard station 

 the Gill proceeded to and began occupying the 

 series of regular stations of the southern leg 

 on February 16, 1953 . Due to high winds and 



heavy seas, only 16 of the proposed 34 

 regular stations could be made . On several 

 occasions it was necessary for the vessel to 

 proceed to the nearest shelter until the 

 weather moderated. The Gill returned to 

 Brunswick on February 22, 1953. 



After a brief stopover in Brunswick for 

 supplies, the Gill departed on February 26, 

 1953, and proceeded northward to occupy 

 regular stations 35 through 80 and special 

 stations 1 through 4 of the northern leg of the 

 cruise. Adverse weather conditions in the 

 Cape Hatteras area prevented occupation of 

 10 regular and the 4 special stations. The 

 vessel returned to Brunswick on March 10, 

 1953. Cruise track chart is given in Figure 

 4. 



During the cruise, Nansen casts were 

 made on all regular stations occupied. Bot- 

 tom samples were obtained on southern leg 

 stations and a few northern leg stations with 

 the orange peel sampler (sampler lost early 

 on northern leg) . Coring was attempted using 

 Phleger corer, but it proved ineffective on the 

 types of bottom encountered. Water samples 

 were collected for salinity, nitrate, carbohy- 

 drates, inorganic phosphate, total phosphor- 

 ous, and proteins on each station. Oxygen 

 determinations were made aboard vessel for 

 each station. BT's and associated meteoro- 

 logical observations were taken on each 

 station and hourly between stations . Oblique 

 plankton hauls with a half-meter silic net were 

 made on each station. Dip -netting was carried 

 out day and night when conditions permitted. 

 Artificial lures were trolled between stations 

 for capture of larger fish . 



Scientific personnel participating in the 

 cruise were: 



I. Southern Leg 



U.S. Fish and Wildlife Service and 

 Cooperators: 



W .W . Anderson 

 J. W. Geh ringer 



Chief Scientist 

 Biologist 



12 



