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= 1.143 m fathom: ftm ≡ 6 ft [4] = 1.8288 m femtometre: fm ... ≈ 8.478 352 81 × 10 −30 C⋅m [38] coulomb-meter: C⋅m = 1 C⋅m debye: D ≡ 10 −10 esu⋅Å
A tuck seine or tuck net about 70 fathoms (420 ft; 130 m) long, and very deep in the middle, was used to take fish from a larger seine. A line attached to a whaling harpoon was about 150 fathoms (900 ft; 270 m). A forerunner — a piece of cloth tied on a ship's log line some fathoms from the outboard end — marked the limit of drift line. [25]
Where the depth was greater than 20 fathoms the line would commonly be marked with a single knot at 25 fathoms, two knots at 30, and so on. [6] Soundings may also be taken to establish the ship's position as an aid in navigation, not merely for safety.
Fathom: Length: Knot: Speed: League: Length: Nautical mile: Length: Rhumb: Angle: The angle between two successive points of the thirty-two point compass (11 degrees 15 minutes) (rare) [1] Shackle: Length: Before 1949, 12.5 fathoms; later 15 fathoms. [2] Toise: Length: Toise was also used for measures of area and volume Twenty-foot equivalent ...
A cable's length (often "cable length" or just "cable") is simply the standard length in which cables came, which by 1555 had settled to around 100 fathoms (600 ft; 180 m) or 1 ⁄ 10 nautical mile (0.19 km; 0.12 mi). [1] Traditionally rope is made on long ropewalks, the length of which determines the maximum length of rope it is possible to make.
Other points on the Plateau also rise to depths of less than 55 metres (30 fathoms). [12] The summit plateau mostly consists of hard rock, like the upper slopes, [11] with rocky outcrops separated by sandy plains. [15] The plateau appears to be a wave-cut platform of Pleistocene age, when sea levels were lower, [3] and is swept by strong ocean ...
toise – Fathom, 6 pieds. Originally introduced by Charlemagne in 790, it is now considered to be 1.949 m. arpent – 30 toises or 180 pieds, 58.471 m; lieue de poste – Legal league, 2000 toises, 3.898 km; lieue metrique – Metric system adaptation, 4.000 km; lieue commune – French land league, 4.452 km, 1 ⁄ 25 Equatorial degree
The basic unit of length in the imperial and U.S. customary systems is the yard, defined as exactly 0.9144 m by international treaty in 1959. [2] [10] Common imperial units and U.S. customary units of length include: [11] thou or mil (1 ⁄ 1000 of an inch) inch (25.4 mm) foot (12 inches, 0.3048 m) yard (3 feet, 0.9144 m)