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Lead and line sounding. A sounding line or lead line is a length of thin rope with a plummet, generally of lead, at its end. Regardless of the actual composition of the plummet, it is still called a "lead". Leads were swung, or cast, by a leadsman, usually standing in the chains of a ship, up against the shrouds. [4]
Early depth sounding was achieved using lead line sounding (or sounding line), where a lead weight attached to a length of rope marked with depth values.As this method was mechanical in nature, the only correction that was applied to the sounding was the reduction of the sounding for tidal height.
The log-line is wound on a reel so the user can easily pay it out. Over time, log construction standardized. The shape is a quarter circle , or quadrant with a radius of 5 inches (130 mm) or 6 inches (150 mm), [ 1 ] and 0.5 inches (13 mm) thick. [ 1 ]
Retrieved from "https://en.wikipedia.org/w/index.php?title=Lead_line_(nautical)&oldid=1032658570"
LINE is a close-quarters combat system, derived from various martial arts, utilized by the United States Marine Corps between 1989 and 1998, and then from 1998 to 2007 by US Army Special Forces. [ citation needed ] It was developed by Ron Donvito, USMC (Retired).
Leading seaman or leading hand, which it is also known as, is the equivalent of corporal in the Royal Australian Air Force and the Australian Army. Leading seamen are addressed as "leader", and informally known as "kellicks" (rather than "killick") from the kellick anchor which is the symbol of their rank.
Lead (tack), for leading livestock; Leash, for dogs and other small animals; And also to ("Led" line): Burton line, a symptom of lead poisoning; Sounding line, an instrument used in navigation to measure water depth (the plummet, or weight, is usually composed of lead) Radiation shielding: "lead-lined" containers for shielding radiation
USBL (ultra-short baseline, also known as SSBL for super short base line) is a method of underwater acoustic positioning. A USBL system consists of a transceiver, which is mounted on a pole under a ship, and a transponder or responder on the seafloor, on a towfish, or on an ROV. A computer, or "topside unit", is used to calculate a position ...
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