- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°46'35"N 0°53'20"E
- Eastings/Northings: 599408, 212607
- OS Grid: TL994126
- Mapcode Local: GBR SPH.HMP
- Mapcode Global: VHKGK.CLDX
Location and coordinates are for the approximate centre of Sunken Island within this administrative area.
Geographic features and populated places may cross administrative borders.