spar buoy


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spar buoy

[′spar ‚bȯi]
(navigation)
A long, thin, typically cylindrical buoy, ballasted at one end so that it floats in an approximately vertical position; used to mark the port side of a channel.
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Developments in this FAD program since 1983 have involved a return to the use of current and swell-resistant spar buoys, since the 2 and 3 x 200 liter oil drum designs, which had reputedly proven successful overseas, had consistently failed in the strong current and high shipping activity areas where they had been deployed off the N.
The greatest successes to date with surface and mid-water fish aggregation devices have been achieved with either spar buoys constructed of foam-filled PVC pipe or very light and buoyant floats constructed of polyurethane foam.
"This summer, the Police and Border Guard Board is planning to mark the border regime area on the Narva Reservoir with approximately 40 new spar buoys," Helen Neider-Veerme, head of the office for integrated administration of the border at the Estonian Police and Border Guard Board, informed.