…An artificial structure erected at the entrance to a port with heavy maritime traffic, in a narrow channel, or near a coastal route with many reefs and shallows to indicate dangerous locations, to help ships determine their position, or to indicate the route. They use light, shapes, colors, sounds, and radio waves, and are classified as night beacons, day beacons, fog signal stations, and radio beacons. Lighthouses are also a type of navigational aid, and are a typical example of a night beacon. … *Some of the terminology that refers to "fog signal station" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…海上交通の激しい港の入口,狭水道,暗礁や浅瀬の多い沿岸航路付近などにおいて,その危険な場所を示したり,船が自分の位置を確かめたり,あるいは航路を指示するために設けられる人為的な施設。灯光,形象,彩色,音響,電波などを利用しており,種類としては夜標,昼標,霧信号所,電波標識などがある。灯台も航路標識の一種で,夜標の代表的なものである。… ※「霧信号所」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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