Latitudes and Longitudes
| Seaport Name | Seaport Code | Country | Latitude | Longitude |
|---|---|---|---|---|
| Hound Point | GBHOP | United Kingdom | 56°00'N | 3°22'W |
| Weaste | GBWEA | United Kingdom | 53°28'N | 2°20'W |
| Port Talbot | GBPTB | United Kingdom | 51°35'N | 3°49'W |
| Torquay | GBTOR | United Kingdom | 50°27'N | 3°31'W |
| Lowestoft | GBLOW | United Kingdom | 52°29'N | 1°44'E |
| Greenock | GBGRK | United Kingdom | 55°57'N | 4°46'W |
| Tyne | GBTYN | United Kingdom | 55°01'N | 1°24'W |
| Pembroke Dock | GBPEM | United Kingdom | 51°40'N | 4°56'W |
| Chatham (Uke) | GBCTM | United Kingdom | 51°20'N | 0°33'E |
| Tollesbury | GBTOL | United Kingdom | 51°45'N | 0°50'E |
| Longships | GBLNG | United Kingdom | 50°04'N | 5°45'W |
| Granton | GBGRN | United Kingdom | 55°59'N | 3°13'W |
| Tranmere | GBTRA | United Kingdom | 53°23'N | 3°00'W |
| Newport (Ukw) | GBNPT | United Kingdom | 51°34'N | 4°50'W |
| Carrington | GBCRN | United Kingdom | 53°28'N | 2°21'W |
| Thameshaven | GBTHM | United Kingdom | 51°27'N | 1°25'E |
| London | GBLON | United Kingdom | 51°30'N | 0°03'W |
| Grangemouth | GBGRG | United Kingdom | 56°01'N | 3°43'W |
| Milford Haven | GBMLF | United Kingdom | 51°42'N | 5°10'W |
| Canvey Island | GBCAN | United Kingdom | 51°31'N | 0°38'E |