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A dolos (plural: dolosse[1]: 10 ) is a wave-dissipating concrete block used in great numbers as a form of coastal management. It is a type of tetrapod. Weighing up to 8 tonnes (8.8 short tons), dolosse are used to build revetments for protection against the erosive force of waves from a body of water.[2][3] The dolos was invented in 1963, and was first deployed in 1964 on the breakwater of East London, a South African port city.[4][5]
Pan743
was invoked but never defined (see the help page).The drawings for the first dolos were completed in 1963, based on the shape devised in wood by Aubrey Kruger. [...] The following year, 1964, the first dolos was laid on the port breakwater [in East London].
Aubrey Kruger‚ the former East London harbour draughtsman who designed the ingenious dolos sea buffer system 50 years ago‚ died in the city last week.