CONTENTS 



Page 



Introduction 1 



Fishing methods 2 



Effort 4 



Catch rates 4 



Acknowledgments 4 



Literature cited 4 



FIGURES 



1. Shaded portion of North Atlantic is the area of tuna and swordfish explorations covered 



by this inventory 3 



2. Total sannpling effort- -number of longline sets and hooks fished within each 1° latitude 



and longitude square 13 



3. January sampling effort- -number of longline sets and hooks fished within each 1° lati- 



tude and longitude square 13 



4. February sampling effort- -number of longline sets and hooks fished within each 1° 



latitude and longitude square 14 



5. March sampling effort- -number of longline sets and hooks fished within each 1° lati- 



tude and longitude square 14 



6. April sampling effort- -number of longline sets and hooks fished within each 1° lati- 



tude and longitude square 15 



7. May sampling effort- -number of longline sets and hooks fished within each 1° latitude 



and longitude square 15 



8. June sampling effort- -number of longline sets and hooks fished within each 1° latitude 



and longitude square 1" 



9. July sampling effort--number of longline sets and hooks fished within each 1° latitude 



and longitude square 16 



10. August sampling effort- -number of longline sets and hooks fished within each 1° lati- 



tude and longitude square 17 



11. September sampling effort- -number of longline sets and hooks fished within each 1° 



latitude and longitude square 17 



12. October sampling effort- -number of longline sets and hooks fished within each 1° lati- 



tude and longitude square 18 



13. November sampling effort- -number of longline sets and hooks fished within each 1° 



latitude and longitude square 18 



14. December sampling effort- -number of longline sets and hooks fished within each 1° 



latitude and longitude square 19 



15. Number of bluefin tuna caught per 100 hooks (average and maximum) within each 1° 



latitude and longitude square 19 



16. Number of bluefin tuna caught in January per 100 hooks (average and maximum) within 



each 1° latitude and longitude square 



17. Number of bluefin tuna caught in February per 100 hooks (average and maximum) 



within each 1° latitude and longitude square 20 



18. Number of bluefin tuna caught in March per 100 hooks (average and maximum) within 



each 1° latitude and longitude square 21 



19. Number of bluefin tuna caught in April per 100 hooks (average and maximum) within 



each 1° latitude and longitude square 21 



20. Number of bluefin tuna caught in May per 100 hooks (average and maximum) within 



each 1° latitude and longitude square 22 



21. Number of bluefin tuna caught in June per 100 hooks (average and maximum) within 



each 1° latitude and longitude square 22 



22. Number of bluefin tuna caught in July per 100 hooks (average and maximum) within 



each 1° latitude and longitude square 23 



23. Number of bluefin tuna caught in August per 100 hooks (average and maximum) within 



each 1° latitude and longitude square 2 3 



24. Number of bluefin tuna caught in September per 100 hooks (average and maximum) 



within each 1° latitude and longitude square 24 



25. Number of bluefin tuna caught in October per 100 hooks (average and maximum) 



within each 1° latitude and longitude square 24 



26. Number of bluefin tuna caught in November per 100 hooks (average and maximum) 



within each 1° latitude and longitude square 25 



iii 



20 



