Wreck Diving in Pembrokeshire
4 diveable wrecks in Pembrokeshire, United Kingdom. Depths range from 7–42m.
MV Lucy
Standing bolt upright on the seabed with her mast still rigged, the Lucy looks less like a wreck and more like a ship that simply forgot to come back up. This Dutch coaster met her end in dramatic fashion in 1967: her calcium carbide cargo began reacting with seawater after she struck Blackstones Reef, threatening an explosion that forced the crew to abandon ship. The rising tide then prised her free and the current carried her to her final resting place north of Skomer Island. Within the Skomer Marine Nature Reserve, the wreck has become a living reef — plumose anemones, dead man's fingers, and nudibranchs carpet every surface, while the dark interior rewards those brave enough to bring a torch inside. The strong tides that guard Jack Sound demand careful slack-water timing, but divers who get the window right encounter one of the most photogenic intact wrecks anywhere in Wales.
SS Cambro
Twenty miles out from the Pembrokeshire coast, the Smalls lighthouse marks one of the most treacherous reefs in the Irish Sea — and the Cambro is its best-known casualty. This steel steamer, loaded with Spanish pyrites, was swallowed by fog in May 1913 and drove straight onto the rocks barely 150 metres from the lighthouse. The wreck itself is largely broken apart, though the stern section and boilers retain enough shape to anchor a dive. But the Cambro's real claim to fame came decades after her loss: in 1991 a sports diver found a Viking sword hilt guard decorated with silver wire and niello among the wreckage, a stunning artefact from centuries before the steamer existed, presumably washed onto the reef from an older, unknown wreck. Getting to the Smalls requires a dedicated long-range boat trip and a cooperative weather window, so each visit carries the earned satisfaction of a genuine offshore expedition.
SS Dakotian
The Dakotian's end came with shocking speed. A Heinkel 111H bomber dropped a parachute magnetic mine into Milford Haven in November 1940, and when it detonated against the anchored cargo steamer she went down in barely three minutes — one of the earliest parachute mine casualties in Welsh waters. At 6,426 tons she was a substantial vessel, and even lying on her side she retains enough structure to fill a dive. The depth range of 7 to 19 metres puts her within reach of intermediate divers, though the visibility in this part of Milford Haven can be challenging and the tides demand respect. What the site lacks in crystal water it makes up for in atmosphere: swimming along a 120-metre hull canted on its beam ends, knowing how suddenly and violently her war ended, gives the Dakotian a sombre character that clear-water wrecks sometimes lack.
SS Dalserf
Grassholm is best known for its 36,000 pairs of nesting gannets — the third-largest colony in the world — but beneath the waves on the island's south-eastern flank lies the Dalserf, a Cardiff coal carrier that struck the rocks in July 1910. All 27 crew survived, though the ship did not. Salvors stripped her of non-ferrous metals long ago, but the triple-expansion engine with its distinctive three-cylinder arrangement and the boiler still mark the centre of the site at around 20 metres. The real draw is the setting: diving among boulders beneath a volcanic island ten miles offshore, with gannets plunge-diving into the water around your boat, is an experience that no shore dive can match. Like the Smalls, reaching Grassholm requires settled conditions and a skipper who knows the reef, so each successful dive here feels properly earned.