- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°55'20"N 1°16'10"E
- Eastings/Northings: 624927, 229941
- OS Grid: TM249299
- Mapcode Local: GBR VQX.HTG
- Mapcode Global: VHLCF.YYL2
Location and coordinates are for the approximate centre of Smack within this administrative area.
Geographic features and populated places may cross administrative borders.