- Category: Water Feature
- Type: Island
- Latitude/Longitude: 57°41'36"N 2°17'24"W
- Eastings/Northings: 382810, 867111
- OS Grid: NJ828671
- Mapcode Local: GBR N8PD.5LL
- Mapcode Global: WH8LS.SWPG
Location and coordinates are for the approximate centre of Black Chest within this administrative area.
Geographic features and populated places may cross administrative borders.