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North Myrtle Beach couple Mike Haney and his wife Cathy came up with the idea of the Mike’s Spikes umbrella anchor while sitting on the beach on Easter weekend in 2006.
A deep-penetrating anchor (DPA) is conceptually similar to a torpedo anchor: it features a dart-shaped, thick-walled, steel cylinder with flukes attached to the upper section of the anchor. A full-scale DPA is approximately 15 metres (49 ft) in length, 1.2 metres (4 ft) in diameter, and weighs on the order of 50–100 tonnes (49–98 long tons ...
The Umbrellas, 1991, Japan Photograph of the yellow umbrellas of the 1991 Christo and Jeanne-Claude project in California. Photo by Robert S. McCombs. The Umbrellas, Japan–USA, 1984–91 was a 1991 environmental artwork in which artists Christo and Jeanne-Claude erected yellow and blue umbrella structures in California (between Gorman and Grapevine [1]) and Japan, respectively.
Suction caissons (also referred to as suction anchors, suction piles or suction buckets) are a form of fixed platform anchor in the form of an open bottomed tube embedded in the sediment and sealed at the top while in use so that lifting forces generate a pressure differential that holds the caisson down.
The ancient Greeks used baskets of stones, large sacks filled with sand, and wooden logs filled with lead, which, according to Apollonius Rhodius and Stephen of Byzantium, were formed of stone; and Athenaeus states that they were sometimes made of wood. Such anchors held the vessel merely by their weight and by their friction along the bottom ...
As ships and their anchors grew in size, the anchor cable or chain would be too big to go around the capstan. Also, a wet cable or chain would be difficult to manage. A messenger would then be used as an intermediate device. This was a continuous loop of cable or chain which would go around the capstan.