Latitudes and Longitudes
| Seaport Name | Seaport Code | Country | Latitude | Longitude |
|---|---|---|---|---|
| Duluth | USDLH | United States of America | 46°49'N | 92°09'W |
| Garyville | USGRL | United States of America | 30°03'N | 90°37'W |
| Yorktown | USYOR | United States of America | 37°14'N | 76°30'W |
| Eagle Point | USEAG | United States of America | 39°57'N | 75°10'W |
| Port San Luis | USPSL | United States of America | 35°10'N | 120°45'W |
| Detroit | USDET | United States of America | 42°19'N | 83°05'W |
| Destrehan | USDES | United States of America | 29°56'N | 90°21'W |
| Sewells Point | USSWP | United States of America | 36°57'N | 76°20'W |
| Portland (Usa-Or) | USPDX | United States of America | 45°30'N | 122°40'W |
| Monterey | USMNY | United States of America | 36°36'N | 121°54'W |
| Sandwich | USSWH | United States of America | 41°46'N | 70°29'W |
| Convent | USCNV | United States of America | 30°01'N | 90°50'W |
| Richmond | USRIC | United States of America | 37°32'N | 77°25'W |
| Coos Bay | USCOB | United States of America | 43°22'N | 124°13'W |
| Martinez | USMRZ | United States of America | 38°01'N | 122°08'W |
| Salem | USSLM | United States of America | 42°30'N | 70°53'W |
| Chalmette | USCLM | United States of America | 29°56'N | 90°00'W |
| Piney Point | USPYP | United States of America | 38°08'N | 76°32'W |
| Astoria | USAST | United States of America | 46°11'N | 123°50'W |
| Paysandu | UYPDU | Uruguay | 32°17'S | 58°06'W |