- Category: Water Feature
- Type: Island
- Latitude/Longitude: 55°50'11"N 6°6'13"W
- Eastings/Northings: 143146, 667983
- OS Grid: NR431679
- Mapcode Local: GBR CF99.4XN
- Mapcode Global: WGZHV.6KNJ
Location and coordinates are for the approximate centre of An Oinseach within this administrative area.
Geographic features and populated places may cross administrative borders.