The term Krähennest referred to in the Seemannssprache the rebuilt to a masthead platform ( Mars ) on the masthead ( boom tip ) or on the spreader of the lower mast , at the base of topmast . The name lookout is also commonly used for a high observation point . Another name for the crow's nest is ice bucket .
During the early days of sailing , the crow's nest was the place for seafarers who, as a lookout point , had to report sightings of other ships or from shore to the ship's command . The height of the lookout determines the visibility ; at a location 2 m above the water surface, an area of around 5 km is overlooked, at 10 m the radius expands to around 12 km, at 15 m to 15 km.
Crows nests and observation towers were still used on warships during World War II. With the help of the radar , however, it was soon possible to locate other ships much better than with the eyes of the best lookout, especially in poor visibility, and the crows' nests disappeared.
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The name crow's nests is derived from the fact that crows used to be carried along. Land could be found with the help of the crows. A crow was released and the ship followed the crow.
- C. Lüdecke: German polar research since the turn of the century and the influence of Erich von Drygalski. Alfred Wegener Institute for Polar Research, 1995, p. 83.
- Origin of Navy Terminology ( Memento January 1, 2015 in the Internet Archive ), The Navy Department Library.