- Category: Water Feature
- Type: Island
- Latitude/Longitude: 56°29'56"N 6°25'22"W
- Eastings/Northings: 127908, 742882
- OS Grid: NM279428
- Mapcode Local: GBR BCJJ.W6T
- Mapcode Global: WGYC8.9XN3
Location and coordinates are for the approximate centre of Sgeir a' Chaisteil within this administrative area.
Geographic features and populated places may cross administrative borders.