Marine radar is an X band or S band radar system carried aboard ships to detect other vessels and land hazards, giving their bearing and distance for collision avoidance and navigation at sea. A rotating antenna sweeps microwave pulses across the surrounding water, and the returning echoes are displayed so the operator can see the position of other ships and obstacles; S band performs better in poor weather while X band gives sharper definition in clear conditions, and most merchant ships carry at least one of each type for complementary coverage. Radar is one of the means recognized under the International Regulations for Preventing Collisions at Sea for keeping a proper lookout, and international maritime safety rules require it aboard oceangoing ships.
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Marine navigation aid used in ocean and marine work
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Source Marine radar (Wikipedia)
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1. History of radar
Early InventionQuote, Early Invention
a simple ship detection device intended to help avoid collisions in fog, patented in 1904
Marine radar (Wikipedia)
In Field: Marine Engineering, IntroductionQuote, In Field: Marine Engineering, Introduction
Marine radars are X band or S band radars on ships, used to detect other ships and land hazards, to provide bearing and distance for collision avoidance and navigation at sea.
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