Convert Shackle to Fathom - Free Calculator
Fast, accurate length conversion calculator. Convert shackle to fathom instantly with precise results.
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How to Convert Shackle to Fathom
Use this free online calculator to convert Shackle to Fathom instantly. This length conversion tool provides accurate results for all your measurement needs.
Quick Reference
Shackle to Fathom Conversion Formula
To convert Shackle to Fathom, multiply by 15.
To convert Fathom back to Shackle, divide by 15 (or multiply by 0.0666667).
About These Units
About Shackle
The shackle is a traditional unit of length used for measuring the lengths of nautical cables and chains, especially anchor chains. Anchor chains are formed by using shackles to join short lengths of chain. When the anchor is dropped and the chain runs out, a seaman counting the number of shackles can report the total length of chain deployed. The size of the unit therefore varied somewhat, depending on the length of the short chains used. In Britain, the unit became standardized in the 16th century at 12.5 fathoms (75 feet or 22.86 meters). In 1949, the Royal Navy adopted a length of 15 fathoms, which is 90 feet or 27.432 meters; this brought the British shackle in line with the U.S. unit, which is usually called the shot.
About Fathom
a linear unit of measurement (equal to 6 feet) for water depth.
Shackle to Fathom Conversion Table
| Shackle | Fathom | Fathom | Shackle |
|---|---|---|---|
| 0.1 | 1.5 | 0.1 | 0.00666667 |
| 0.5 | 7.5 | 0.5 | 0.0333333 |
| 1 | 15 | 1 | 0.0666667 |
| 2 | 30 | 2 | 0.133333 |
| 5 | 75 | 5 | 0.333333 |
| 10 | 150 | 10 | 0.666667 |
| 20 | 300 | 20 | 1.33333 |
| 25 | 375 | 25 | 1.66667 |
| 50 | 750 | 50 | 3.33333 |
| 100 | 1,500 | 100 | 6.66667 |
| 250 | 3,750 | 250 | 16.6667 |
| 500 | 7,500 | 500 | 33.3333 |
| 1000 | 15,000 | 1000 | 66.6667 |
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