Jack Sound

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Jack Sound is a treacherous body of water[1] about 800 metres (2,600 ft) wide between the island of Skomer and the Pembrokeshire mainland that contains numerous reefs and a tidal race of up to 6 knots.

It is used by boats to avoid a three-mile detour around the island,[2] and has its share of sunken shipwrecks.

The most popular wreck for divers is The Lucy, which sank in good condition in 1967 after being abandoned by its crew owing to its cargo of calcium carbide.[3]

The sound is part of the Skomer Marine Conservation Zone.[4]


  1. ^ "Jack Sound". Dive Magazine. Retrieved 19 January 2019.
  2. ^ Low Carbon Lifestyle Tour Archived July 27, 2008, at the Wayback Machine
  3. ^ "Divetheworld: MV Lucy". Retrieved 19 January 2019.
  4. ^ "Countryside Council for Wales: Skomer Island". Retrieved 19 January 2019.

Coordinates: 51°44′06″N 5°15′32″W / 51.735°N 5.259°W / 51.735; -5.259