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The frequent revisit times of satellites and historical data archives also allow a continuous environmental monitoring of the shallow water zone. Therefore, Satellite-derived bathymetry finds uptake in applications which require to map and monitor shallow waters, which might be not accessible or cover significant geographical areas and support ...
A depth gauge can also be based on light: The brightness decreases with depth, but depends on the weather (e.g. whether it is sunny or cloudy) and the time of the day. Also the color depends on the water depth. [7] [8] In water, light attenuates for each wavelength, differently.
A depth finder may refer to any of the following: Sonar: use of underwater sound propagation to measure depth; Fathometer or fishfinder: a device to locate fish at various water depths; Echo sounding: a technique using sound pulses to measure depth; sounding line: a length of rope used to measure water depth
A sailor and a man on shore, both sounding the depth with a line. Depth sounding, often simply called sounding, is measuring the depth of a body of water. Data taken from soundings are used in bathymetry to make maps of the floor of a body of water, such as the seabed topography. Soundings were traditionally shown on nautical charts in fathoms ...
Keel depth (sometimes given as Depth to keel) is the depth (or draft) of water from the water surface to the keel of a vessel, the deepest part. The keel establishes a commonly defined reference point to measure to. Keel depth is useful for determining safe operating depth in shallow water.
Water surface searches are procedures carried out on or over the surface of a body of water with the purpose of finding lost vessels, persons, or floating objects, which may use one or more of a variety of search patterns depending on the target of the search, as the direction and rate of drift vary depending on the characteristics of the target and the water and weather conditions at the time.
Operation of Deeper is based on echolocation and wi-fi technologies. Echolocation is a method for detecting and locating objects submerged in water. When a sound signal is produced, the time it takes for the signal to reach an object and for its echo to return is issued to calculate the distance between the sonar and the object.
A personal watercraft (PWC), also called Jet Ski or water scooter, is a primarily recreational watercraft that is designed to hold only a small number of occupants, who sit or stand on top of the craft, not within the craft as in a boat. Prominent brands of PWCs include Jet Skis and Sea-Doos. PWCs have two style categories.
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