| Sandown Fort | |
| Location: | Sandown, Isle of Wight, England |
| Coordinates: | 50.6605°N -1.1391°W |
| Map Type: | Isle of Wight |
| Built: | September 1864 |
| Materials: | Granite |
| Used: | Zoo |
| Ownership: | Wildheart Animal Sanctuary |
| Open To Public: | Yes |
Sandown Fort (map reference) is a fort built in Sandown on the Isle of Wight in the middle of Sandown Bay. It is one of the many Palmerston Forts built on the island to protect it in response to a perceived French invasion. It was a replacement of the earlier Sandown Diamond Fort as, in 1859, the Royal Commission felt it did not offer suitable protection.[1] Construction of the fort began in April 1861 and was completed by September 1864 at a cost of £73,876. In later documents it is often referred to as Granite Fort. The fort originally had 18 9-inch R.M.L guns facing the sea behind iron shields, these guns were later upgraded and an extra 5 inches of armor was added.[2]
The fort was sold in 1930 but during World War II the fort played a significant role in the D-Day landings as it housed sixteen pumps for the PLUTO (Pipe Line Under The Ocean) operation to keep the Allied forces supplied with fuel. Each of the 16 pumps supplied 36000impgal of fuel per day at a pressure of 1,500 lb per square inch. In the 1950s the site was used to house the Isle of Wight Zoo, which was renamed as the Wildheart Animal Sanctuary in 2021.