- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°3'38"N 5°33'28"W
- Eastings/Northings: 145457, 23917
- OS Grid: SW454239
- Mapcode Local: GBR DXNJ.8Z2
- Mapcode Global: VH05P.MQ4R
Location and coordinates are for the approximate centre of Half Tide Rock within this administrative area.
Geographic features and populated places may cross administrative borders.