- Category: Water Feature
- Type: Island
- Latitude/Longitude: 57°30'56"N 5°39'6"W
- Eastings/Northings: 181387, 853174
- OS Grid: NG813531
- Mapcode Local: GBR D8FV.MX4
- Mapcode Global: WH092.4CV5
Location and coordinates are for the approximate centre of Sgeir Dhubh within this administrative area.
Geographic features and populated places may cross administrative borders.