Lavernock Point
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Lavernock Point is a headland on the coast of South Wales, and lies 8 km south of Cardiff and 6 km east of Barry.
In the 1860s a battery of guns was built protecting the approaches to Cardiff.
On 18 May 1897, Guglielmo Marconi, assisted by George Kemp, a Cardiff Post Office engineer, transmitted the very first message by wireless telegraphy — radio — across the water between the island of Flat Holm and Lavernock Point, a distance of 3.5 statute miles (5.5 km). The message sent in Morse code was 'ARE YOU READY'.
A line drawn between Lavernock Point and Sand Point, Somerset marks the lower limit of the Severn estuary and the upper limit of the Bristol Channel. Because of the extreme tidal range in the Severn estuary into which Lavernock Point protrudes, there are very strong tidal currents or rips close inshore to the point with speeds that exceed 7 knots for several hours each tide.
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