used during five inshore surveys. This 27 m vessel was also rigged as a stern 

 trawler. The data obtained with the two large vessels are considered to be 

 interchangeable. 



After arriving on a pre-selected station, a temperature profile was 

 obtained using an expendable bathythermograph system. A surface bucket 

 temperature was taken, and a surface water sample was collected for subsequent 

 salinity measurement. In inshore areas some bottom salinity samples were 

 collected along with samples for dissolved oxygen determinations. Weather, 

 sea state, and position observations were recorded. 



A standard trawl haul began when the predetermined amount of wire was let 

 out and the winch drums were locked. The haulback process began 30 minutes 

 later. The scope of the towing wire varied from 5:1 in the shallow nearshore 

 areas, to 2.5:1 in depths greater than 185 m. The trawl was towed at a speed 

 of 3.5 knots relative to the bottom. The tow direction was generally toward 

 the next station, but this was not always the case, especially in very rough 

 water or in areas where the bottom was steeply graded (under the latter 

 conditions a depth contour was followed). A fathometer trace was also 

 recorded during each tow. 



The catch was dumped onto the checker table and sorted by species. All 

 the fish and invertebrates were then weighed to the nearest 0.1 kilogram, and 

 measured to the nearest centimeter (total length to the end of the center 

 caudal fin ray). Large catches were sub-sampled by weight or volume for 

 reasons of practicality and later expanded to the entire catch. After 

 weighing and measuring had been completed, biological samples were taken 

 including scales, otoliths, or other hard parts for age and growth studies; 

 and stomachs were taken for food habit studies. Tissue samples were taKen for 

 pathology or contaminant studies. Gonadal conditions were noted and ovaries 



