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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These spar buoys are constructed from 6 m lengths of 315 mm diameter heavy duty PVC pipe filled with polyurethane foam for floatation.
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.
Plastics spar buoys are purchased under the conditions set in the contract documents.