- Category: Water Feature
- Type: Island
- Latitude/Longitude: 54°32'16"N 0°44'47"W
- Eastings/Northings: 481202, 516561
- OS Grid: NZ812165
- Mapcode Local: GBR RH7Z.53
- Mapcode Global: WHF8K.H6RL
Location and coordinates are for the approximate centre of Topman Steel within this administrative area.
Geographic features and populated places may cross administrative borders.