LEST OF TABLES 



No. Page 



1. Surface water tenperatures-monthly and annual means 



for 1957 2 



2. Grand Harbour 6 



3. Portland Lightship. 9 



i+. Boston Lightship ...•..•••«. 23 



5. Georges Shoal . ••• 30 



6. Nantucket Lightship ............ 34 



7. Woods Hole kk 



8. Buzzards Lightship • • k6 



9. Kingston • ^0 



10. Ambrose Lightship 55 



11. Bamegat Lightship ..«.•.. 63 



12. Five Fathom Bank lightship 71 



13. Winter Quarter Lightship . 79 



lU. Chesapeake Lightship 87 



15. Diamond Shoals lightship • 95 



16. Frying Pan Shoals Lightship 109 



17. Savannah Lightship ..... II7 



