uniformly distributed over the year. Thunderbolt boats, idle during the 

 first four inontho of the year, took nearly two-tbirdo of their shrlmxj in 

 the period from September throuch December. Bllojci, Mississippi, opera- 

 tions were more productive during the sujmner months than at any other 

 time of the year; catches were off considerably during the first four 

 months. Fishing off Brovmsville, Texas, was much more productive during 

 the last three months of the year; the boats accounted for over one-half 

 of their total annual catches during this period. 



Fishing in the more productive year-round fisheries in the Gulf 

 of Campeche and off the coast of Texas is conducted by larger boats. 

 The average annual catch, average catch per day, and average nuiaber of 



fishing days for these vessels in the Harvjell, Knowles, and Associates 

 sample, were greater than for vessels fishing other areas. Table III - 11 

 illustrates the relationship of size of vessel and the three factors 

 aforementioned . 



TABLE III - 11. --SAMPLE OF AVERAGE CATCH BY VESSEL SIZE 

 FOR 1*3 SflRBIP VESSELS OF SOUTH ATLANTIC AND GULF PORTS, 1951+ 



1/ Length of the vessels is reported as overall length, 

 n.a. - not available. 



160 



