Wreck Diving in West Sussex
2 diveable wrecks in West Sussex, United Kingdom. Depths range from 27–30m.
HMS/m A1
Lying in just 12 metres of water off Bracklesham Bay, HMS A1 holds a unique place in British naval history: she was the very first submarine designed and built in this country for the Royal Navy. Constructed by Vickers in 1903, she had already survived one sinking — a collision with SS Berwick Castle in 1904 that killed eleven crew before she was raised — when she was repurposed as an unmanned torpedo target. In August 1911, operating on automatic pilot, she sank for good off Selsey Bill. Tidal currents slowly dragged her five miles along the seabed to her present position. The hull is virtually intact, with the bow standing proud while the stern disappears beneath a sandbank. Protected under the Protection of Wrecks Act since 1998, she requires a permit to dive, and the Nautical Archaeology Society has established a structured dive trail for visiting divers. For anyone interested in submarine heritage, there is no more historically significant shallow dive in British waters.
SS Gascony
The Gascony presents a puzzle that rewards patient exploration. Attacked by UC-75 on 18 January 1918, this armed cargo steamer broke in two and sank the following afternoon near Selsey Bill, coming to rest upside down on the edge of the Owers — a notorious shallow bank that has claimed countless vessels over the centuries. Her inverted orientation makes navigation tricky: what should be the deck is buried, and you swim beneath the keel looking up at the hull plating. Among the scattered cargo, the wheels of army gun carriages poke through the wreckage, a reminder that she was doing war work when the torpedo found her. At 27 to 30 metres she sits in nitrox-friendly territory, though currents near the Owers demand timing. For experienced sport divers who enjoy reading a wreck's story from its remains rather than its silhouette, the Gascony delivers a satisfyingly cerebral dive.