- Category: Water Feature
- Type: Island
- Latitude/Longitude: 54°29'3"N 0°34'43"W
- Eastings/Northings: 492170, 510800
- OS Grid: NZ921108
- Mapcode Local: GBR SJDL.G9
- Mapcode Global: WHG9Z.2KM6
Location and coordinates are for the approximate centre of Black Nab within this administrative area.
Geographic features and populated places may cross administrative borders.