- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 51°28'55"N 0°34'52"E
- Eastings/Northings: 579338, 179065
- OS Grid: TQ793790
- Mapcode Local: GBR PNS.3S8
- Mapcode Global: VHJLH.105N
Location and coordinates are for the approximate centre of St Mary's Bay within this administrative area.
Geographic features and populated places may cross administrative borders.