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fathom: ftm ≡ 6 ft [4] = 1.8288 m ... ≈ 30 856 775 814 913 700 m [12] ... 1 ⁄ 100 of the energy required to warm one gram of air-free water from 0 °C to 100 ...
On nautical charts, the top of the chart is always true north, rather than magnetic north, towards which a compass points. Most charts include a compass rose depicting the variation between magnetic and true north. However, the use of the Mercator projection has drawbacks. This projection shows the lines of longitude as parallel.
The flat top is a summit plateau with a width of 8.0 kilometres (5 mi) [2] and as more recently determined 11 by 8.5 kilometres (6.8 mi × 5.3 mi) [14] at a mean depth of 73 metres (40 fathoms) [3] and has been named Emerson Plateau; it has a vaguely triangular shape pointing west, and Collins Point lies close to the western margin of the ...
A fathom is a unit of length in the imperial and the U.S. customary systems equal to 6 feet (1.8288 m), used especially for measuring the depth of water. [1] The fathom is neither an international standard (SI) unit, nor an internationally accepted non-SI unit. Historically it was the maritime measure of depth in the English-speaking world but ...
Explanation system unit unit-code symbol or abbrev. notes sample default conversion combination output units the system(s) to which the unit belongs
The template is intended for conversion of heights specified in either metres or in feet and inches. Template parameters Parameter Description Type Status Metres m metre metres meter meters The height in metres. Do not use if feet and inches are specified. Number optional Centimetres cm centimetre centimetres centimeter centimeters The height in centimetres. Do not use if feet and inches are ...
A cable length or length of cable is a nautical unit of measure equal to one tenth of a nautical mile or approximately 100 fathoms.Owing to anachronisms and varying techniques of measurement, a cable length can be anywhere from 169 to 220 metres (185 to 241 yd), depending on the standard used.
Bathymetric surveys and charts are associated with the science of oceanography, particularly marine geology, and underwater engineering or other specialized purposes. Bathymetric map of Medicine Lake, California. Bathymetric data used to produce charts can also be converted to bathymetric profiles which are vertical sections through a feature.