fathom | 1 ftm | 2 ftm | 3 ftm | 4 ftm | 5 ftm | 6 ftm | 7 ftm | 8 ftm | 9 ftm | 10 ftm | 11 ftm | 12 ftm | 13 ftm | 14 ftm | 15 ftm | 16 ftm | 17 ftm | 18 ftm | 19 ftm | 20 ftm | 21 ftm | 22 ftm | 23 ftm | 24 ftm | 25 ftm | 26 ftm | 27 ftm | 28 ftm | 29 ftm | 30 ftm | 31 ftm | 32 ftm | 33 ftm | 34 ftm | 35 ftm | 36 ftm | 37 ftm | 38 ftm | 39 ftm | 40 ftm | 41 ftm | 42 ftm | 43 ftm | 44 ftm | 45 ftm | 46 ftm | 47 ftm | 48 ftm | 49 ftm | 50 ftm | 51 ftm | 52 ftm | 53 ftm | 54 ftm | 55 ftm | 56 ftm | 57 ftm | 58 ftm | 59 ftm | 60 ftm | 61 ftm | 62 ftm | 63 ftm | 64 ftm | 65 ftm | 66 ftm | 67 ftm | 68 ftm | 69 ftm | 70 ftm | 71 ftm | 72 ftm | 73 ftm | 74 ftm | 75 ftm | 76 ftm | 77 ftm | 78 ftm | 79 ftm | 80 ftm | 81 ftm | 82 ftm | 83 ftm | 84 ftm | 85 ftm | 86 ftm | 87 ftm | 88 ftm | 89 ftm | 90 ftm | 91 ftm | 92 ftm | 93 ftm | 94 ftm | 95 ftm | 96 ftm | 97 ftm | 98 ftm | 99 ftm | 100 ftm |
cable length (US) | 0.0083333 cable length (US) | 0.0166667 cable length (US) | 0.025 cable length (US) | 0.0333333 cable length (US) | 0.0416667 cable length (US) | 0.05 cable length (US) | 0.0583333 cable length (US) | 0.0666667 cable length (US) | 0.075 cable length (US) | 0.0833333 cable length (US) | 0.0916667 cable length (US) | 0.1 cable length (US) | 0.1083333 cable length (US) | 0.1166667 cable length (US) | 0.125 cable length (US) | 0.1333333 cable length (US) | 0.1416667 cable length (US) | 0.15 cable length (US) | 0.1583333 cable length (US) | 0.1666667 cable length (US) | 0.175 cable length (US) | 0.1833333 cable length (US) | 0.1916667 cable length (US) | 0.2 cable length (US) | 0.2083333 cable length (US) | 0.2166667 cable length (US) | 0.225 cable length (US) | 0.2333333 cable length (US) | 0.2416667 cable length (US) | 0.25 cable length (US) | 0.2583333 cable length (US) | 0.2666667 cable length (US) | 0.275 cable length (US) | 0.2833333 cable length (US) | 0.2916667 cable length (US) | 0.3 cable length (US) | 0.3083333 cable length (US) | 0.3166667 cable length (US) | 0.325 cable length (US) | 0.3333333 cable length (US) | 0.3416667 cable length (US) | 0.35 cable length (US) | 0.3583333 cable length (US) | 0.3666667 cable length (US) | 0.375 cable length (US) | 0.3833333 cable length (US) | 0.3916667 cable length (US) | 0.4 cable length (US) | 0.4083333 cable length (US) | 0.4166667 cable length (US) | 0.425 cable length (US) | 0.4333333 cable length (US) | 0.4416667 cable length (US) | 0.45 cable length (US) | 0.4583333 cable length (US) | 0.4666667 cable length (US) | 0.475 cable length (US) | 0.4833333 cable length (US) | 0.4916667 cable length (US) | 0.5 cable length (US) | 0.5083333 cable length (US) | 0.5166667 cable length (US) | 0.525 cable length (US) | 0.5333333 cable length (US) | 0.5416667 cable length (US) | 0.55 cable length (US) | 0.5583333 cable length (US) | 0.5666667 cable length (US) | 0.575 cable length (US) | 0.5833333 cable length (US) | 0.5916667 cable length (US) | 0.6 cable length (US) | 0.6083333 cable length (US) | 0.6166667 cable length (US) | 0.625 cable length (US) | 0.6333333 cable length (US) | 0.6416667 cable length (US) | 0.65 cable length (US) | 0.6583333 cable length (US) | 0.6666667 cable length (US) | 0.675 cable length (US) | 0.6833333 cable length (US) | 0.6916667 cable length (US) | 0.7 cable length (US) | 0.7083333 cable length (US) | 0.7166667 cable length (US) | 0.725 cable length (US) | 0.7333333 cable length (US) | 0.7416667 cable length (US) | 0.75 cable length (US) | 0.7583333 cable length (US) | 0.7666667 cable length (US) | 0.775 cable length (US) | 0.7833333 cable length (US) | 0.7916667 cable length (US) | 0.8 cable length (US) | 0.8083333 cable length (US) | 0.8166667 cable length (US) | 0.825 cable length (US) | 0.8333333 cable length (US) |
A fathom is a unit of length in the imperial and the U.S. customary systems equal to 6 feet (1.8288 metres), used especially for measuring the depth of water.
There are two yards (6 feet) in an imperial fathom. Originally the span of a man's outstretched arms, the size of a fathom has varied slightly depending on whether it was defined as a thousandth of an (Admiralty) nautical mile or as a multiple of the imperial yard. Formerly, the term was used for any of several units of length varying around 5–5 1⁄2 feet.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
fathom | ftm | ≡ 6 ft | = 1.8288 m | Imperial/US |
fathoms | cable length (US) | fathoms | cable length (US) |
---|---|---|---|
1 | = 0.0083333333333333 | 4 | = 0.033333333333333 |
1.5 | = 0.0125 | 4.5 | = 0.0375 |
2 | = 0.016666666666667 | 5 | = 0.041666666666667 |
2.5 | = 0.020833333333333 | 5.5 | = 0.045833333333333 |
3 | = 0.025 | 6 | = 0.05 |
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. The unit is named after the length of a ship's anchor cable in the Age of Sail. The definition varies:
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
cable length (US) | ≡ 720 ft | = 219.456 m | Imperial/US |
cable length (US) | fathoms | cable length (US) | fathoms |
---|---|---|---|
1 | = 120 | 4 | = 480 |
1.5 | = 180 | 4.5 | = 540 |
2 | = 240 | 5 | = 600 |
2.5 | = 300 | 5.5 | = 660 |
3 | = 360 | 6 | = 720 |
fathoms | cable length (US) |
---|---|
1 | = 0.0083333 |
120 | = 1 |
You can find the conversion in other languages in the following:
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |