Latitudes and Longitudes
| Seaport Name | Seaport Code | Country | Latitude | Longitude |
|---|---|---|---|---|
| Middlesbrough | GBMID | United Kingdom | 54°35'N | 1°14'W |
| Invergordon | GBIVG | United Kingdom | 57°41'N | 4°10'W |
| Whitehaven | GBWHV | United Kingdom | 54°33'N | 3°36'W |
| Swansea | GBSWA | United Kingdom | 51°37'N | 3°56'W |
| Coryton | GBCOY | United Kingdom | 51°31'N | 0°31'E |
| Tower Bridge+1 | GBLON | United Kingdom | 51°30'N | 0°03'W |
| Manchester | GBMNC | United Kingdom | 53°29'N | 2°14'W |
| 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 |