- Category: Water Feature
- Type: Island
- Latitude/Longitude: 57°40'25"N 7°3'54"W
- Eastings/Northings: 98149, 876165
- OS Grid: NF981761
- Mapcode Local: GBR 88YF.W59
- Mapcode Global: WGW32.FDX3
Location and coordinates are for the approximate centre of Opsay within this administrative area.
Geographic features and populated places may cross administrative borders.