- Category: Water Feature
- Type: Island
- Latitude/Longitude: 53°13'10"N 4°10'27"W
- Eastings/Northings: 254928, 371375
- OS Grid: SH549713
- Mapcode Local: GBR 5N.10H6
- Mapcode Global: WH546.VBFM
Location and coordinates are for the approximate centre of Swelly Rock within this administrative area.
Geographic features and populated places may cross administrative borders.