CONTENTS 



Page 



Introduction 2 



Source of data 2 



Analytical procedures 2 



Baiting 3 



Day baiting 3 



Night baiting 5 



The fishing trip 6 



Scouting 6 



Fishing 10 



Amount of bait used 11 



Number of men fishing 13 



Fishing duration 14 



Size of fish 17 



Spatial and temporal distributions of sightings and catches . 18 



Cloud cover and wave height 20 



Predominant birds and size of bird flocks 21 



Catch per trip 22 



Supporting activities . 23 



Optimum vessel operation 24 



Acknowledgments 25 



Literature cited 25 



FIGURES 



1. Block diagram of baiting and fishing operation 3 



2. Baiting areas on Oahu 3 



3. Total catch and (in parentheses) catch per set, by statistical areas, of 

 day bait caught in Pearl Harbor, Keehi Lagoon, and Kaneohe Bay by 



seven Hawaiian skipjack tuna fishing vessels, June-August 1967 5 



4. Total catch and (in parentheses) catch per set, by statistical areas, of 

 night bait caught in Kaneohe Bay and Keehi Lagoon by seven Hawaiian 

 skipjack tuna fishing vessels, June-August 1967 6 



5. Percentage frequency of trips tabulated by the number of schools 

 sighted, chummed, and successfully fished per trip by seven Hawaiian 

 skipjack tuna fishing vessels, June-August 1967 9 



6. Frequency of pursuit time and chumming time per school for seven 

 Hawaiian skipjack tuna fishing vessels, June-August 1967 10 



7. Relation between amount of bait used per school and average values 

 of catch per school, number of men fishing per school, fishing dura- 

 tion per school, and size of fish per school, June-August 1967 12 



8. Relation between number of men fishing per school and average values 

 of catch per school, amount of bait used per school, fishing duration 



per school, and size of fish per school, June-August 1967 14 



9. Relation between fishing duration and average values of catch per 

 school, amount of bait used per school, number of men fishing per 

 school, and size of fish per school, June-August 1967 15 



10. Relation between size of fish and average values of catch per school, 

 amount of bait used per school, number of men fishing per school, 

 and fishing duration per school, June-August 1967 15 



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