- Category: Water Feature
- Type: Island
- Latitude/Longitude: 56°44'53"N 6°11'30"W
- Eastings/Northings: 143815, 769693
- OS Grid: NM438696
- Mapcode Local: GBR CB3W.DKZ
- Mapcode Global: WGYB6.VNM1
Location and coordinates are for the approximate centre of Sanna Island within this administrative area.
Geographic features and populated places may cross administrative borders.