Latitudes and Longitudes
| Seaport Name | Seaport Code | Country | Latitude | Longitude |
|---|---|---|---|---|
| Heysham | GBHYM | United Kingdom | 54°02'N | 2°55'W |
| Pembroke Dock | GBPEM | United Kingdom | 51°40'N | 4°56'W |
| Barton (Mersey) | GBBNM | United Kingdom | 53°28'N | 2°22'W |
| Invergordon | GBIVG | United Kingdom | 57°41'N | 4°10'W |
| Whitehaven | GBWHV | United Kingdom | 54°33'N | 3°36'W |
| River Blackwater | GBRBL | United Kingdom | 51°45'N | 0°51'E |
| Harwich | GBHRW | United Kingdom | 51°56'N | 1°14'E |
| Newport (Ukw) | GBNPT | United Kingdom | 51°34'N | 4°50'W |
| Barton (Humber) | GBBNH | United Kingdom | 53°42'N | 0°26'W |
| Hound Point | GBHOP | United Kingdom | 56°00'N | 3°22'W |
| Weaste | GBWEA | United Kingdom | 53°28'N | 2°20'W |
| Redcliffe Bay | GBREB | United Kingdom | 51°29'N | 2°47'W |
| Hartlepool | GBHTP | United Kingdom | 54°42'N | 1°12'W |
| Milford Haven | GBMLF | United Kingdom | 51°42'N | 5°10'W |
| Barrow In Furness | GBBIF | United Kingdom | 54°06'N | 3°13'W |
| Greenock | GBGRK | United Kingdom | 55°57'N | 4°46'W |
| Tyne | GBTYN | United Kingdom | 55°01'N | 1°24'W |
| Purfleet | GBPUR | United Kingdom | 51°30'N | 0°15'E |
| Hamble | GBHAM | United Kingdom | 50°50'N | 1°19'W |
| Barrow | GBBIF | United Kingdom | 54°06'N | 3°13'W |