- Category: Water Feature
- Type: Island
- Latitude/Longitude: 49°55'4"N 6°19'5"W
- Eastings/Northings: 90147, 10898
- OS Grid: SV901108
- Mapcode Local: GBR BXSW.WB3
- Mapcode Global: VGYC4.FBRC
Location and coordinates are for the approximate centre of Rat Island within this administrative area.
Geographic features and populated places may cross administrative borders.