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The scale. The Douglas sea scale, also called the "international sea and swell scale", was devised in 1921 [1] by Captain H. P. Douglas, who later became vice admiral Sir Percy Douglas and hydrographer of the Royal Navy. Its purpose is to estimate the roughness of the sea for navigation.
The mile (Mil) is thus about 963 or 1146 meters (3160 or 3760 ft) — approximately six or seven tenths of a mile, and significantly shorter than the modern statute or land mile of 5280 ft or 1760 yd (approximately 1.6 km). The precise width of the etzba (finger) has been a subject of controversy among halakhic authorities. The best known are ...
The physical group size equivalent to m minutes of arc can be calculated as follows: group size = tan( m / 60 ) × distance. In the example previously given, for 1 minute of arc, and substituting 3,600 inches for 100 yards, 3,600 tan( 1 / 60 ) ≈ 1.047 inches. In metric units 1 MOA at 100 metres ≈ 2.908 centimetres.
Stowage factor. In shipping, the stowage factor indicates how many cubic metres of space one tonne (or cubic feet of space one long ton) of a particular type of cargo occupies in a hold of a cargo ship. [1] It is calculated as the ratio of the stowage space required under normal conditions, including the stowage losses caused by the means of ...
The energy obtainable from burning one US gallon of gasoline is 115,000 BTU, 33.70 kWh, or 121.3 MJ. [8] To convert the mile per gallon rating into other units of distance per unit energy used, the mile per gallon value can be multiplied by one of the following factors to obtain other units: 1 MPGe.
1 cubic- klafter line = 7896232.1 cubic millimetre. 1 cubic klafter point = 658019.3 cubic millimetre. 1 cubic foot = 0.0315749412 cubic metres. 1 cubic inch = 18249.3 cubic millimetres. 1 cubic line = 10.56 cubic millimetres. The Rahmklafter, [ 7] as the unit of timber measurement was called in Austria, was defined for long and short firewood ...
Standard containers are 8 feet (2.44 m) wide by 8 ft 6 in (2.59 m) high, [nb 6] although the taller "High Cube" or "hi-cube" units measuring 9 feet 6 inches (2.90 m) have become very common in recent years [when?]. By the end of 2013, high-cube 40 ft containers represented almost 50% of the world's maritime container fleet, according to Drewry ...
Belt-fed (M2 or M9 links) The M2 machine gun or Browning .50 caliber machine gun (informally, " Ma Deuce " [14][15]) is a heavy machine gun that was designed near the end of World War I by John Browning. While similar to Browning's M1919 Browning machine gun, which was chambered for the .30-06 cartridge, the M2 uses Browning's larger and more ...