- Category: Water Feature
- Type: Island
- Latitude/Longitude: 58°17'0"N 7°34'49"W
- Eastings/Northings: 73077, 946338
- OS Grid: NA730463
- Mapcode Local: GBR 76PT.SS3
- Mapcode Global: WGTYS.J2G1
Location and coordinates are for the approximate centre of Hamasgeir within this administrative area.
Geographic features and populated places may cross administrative borders.