- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°12'21"N 4°54'30"W
- Eastings/Northings: 192562, 38057
- OS Grid: SW925380
- Mapcode Local: GBR ZP.Z3Y8
- Mapcode Global: FRA 08LG.ZJQ
Location and coordinates are for the approximate centre of Coggan Rock within this administrative area.
Geographic features and populated places may cross administrative borders.