Dangerous rocks in Jack Sound - geograph

Jack Sound is a treacherous body of water about wide between the island of

Skomer Skomer () or Skomer Island is an island off the coast of Pembrokeshire, in the community of Marloes and St Brides in west Wales. It is well known for its wildlife: around half the world's population of Manx shearwaters nest on the island, the At ...

and the

Pembrokeshire Pembrokeshire ( ; cy, Sir Benfro ) is a Local government in Wales#Principal areas, county in the South West Wales, south-west of Wales. It is bordered by Carmarthenshire to the east, Ceredigion to the northeast, and the rest by sea. The count ...

mainland that contains numerous reefs and a

tidal race Tidal race or tidal rapid is a natural occurrence whereby a fast-moving tide passes through a constriction, resulting in the formation of waves, eddies and hazardous currents. The constriction can be a passage where the sides narrow, for example ...

of up to 6 knots. It is used by boats to avoid a three-mile detour around the island, and has its share of sunken shipwrecks. The most popular wreck for

divers Diver or divers may refer to: *Diving (sport), the sport of performing acrobatics while jumping or falling into water *Practitioner of underwater diving, including: **scuba diving, **freediving, **surface-supplied diving, **saturation diving, a ...

is the MV ''Lucy'', which sank in good condition in February 1967 after being abandoned by its crew owing to its cargo of

calcium carbide Calcium carbide, also known as calcium acetylide, is a chemical compound with the chemical formula of Ca C2. Its main use industrially is in the production of acetylene and calcium cyanamide. The pure material is colorless, while pieces of tec ...

. The Netherlands-registered coaster, , was en route from

Uddevalla Uddevalla (old no, Oddevold) is a town and the seat of Uddevalla Municipality in Västra Götaland County, Sweden. In 2015, it had a population of 34 781. It is located at a bay of the south-eastern part of Skagerrak. The beaches of Uddevalla are ...

, Sweden to

Barry Barry may refer to: People and fictional characters * Barry (name), including lists of people with the given name, nickname or surname, as well as fictional characters with the given name * Dancing Barry, stage name of Barry Richards (born c. 19 ...

. The sound is part of the

Skomer Marine Conservation Zone Skomer Marine Conservation Zone is an underwater marine nature reserve located off the coast of Pembrokeshire in Wales. The nature reserve completely surrounds the islands of Skomer and Middleholm, and encompasses the mainland coastline aroun ...

References

Tides {{Pembrokeshire-geo-stub