- Category: Water Feature
- Type: Island
- Latitude/Longitude: 57°42'5"N 5°42'43"W
- Eastings/Northings: 178913, 874025
- OS Grid: NG789740
- Mapcode Local: GBR D88C.J9K
- Mapcode Global: WH082.7P5B
Location and coordinates are for the approximate centre of Sgeir Dhubh Mhòr within this administrative area.
Geographic features and populated places may cross administrative borders.