Convert Fathom to Shackle - Free Calculator
Fast, accurate length conversion calculator. Convert fathom to shackle instantly with precise results.
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How to Convert Fathom to Shackle
Use this free online calculator to convert Fathom to Shackle instantly. This length conversion tool provides accurate results for all your measurement needs.
Quick Reference
Fathom to Shackle Conversion Formula
To convert Fathom to Shackle, multiply by 0.0666667.
To convert Shackle back to Fathom, divide by 0.0666667 (or multiply by 15).
About These Units
About Fathom
a linear unit of measurement (equal to 6 feet) for water depth.
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.
Fathom to Shackle Conversion Table
| Fathom | Shackle | Shackle | Fathom |
|---|---|---|---|
| 0.1 | 0.00666667 | 0.1 | 1.5 |
| 0.5 | 0.0333333 | 0.5 | 7.5 |
| 1 | 0.0666667 | 1 | 15 |
| 2 | 0.133333 | 2 | 30 |
| 5 | 0.333333 | 5 | 75 |
| 10 | 0.666667 | 10 | 150 |
| 20 | 1.33333 | 20 | 300 |
| 25 | 1.66667 | 25 | 375 |
| 50 | 3.33333 | 50 | 750 |
| 100 | 6.66667 | 100 | 1,500 |
| 250 | 16.6667 | 250 | 3,750 |
| 500 | 33.3333 | 500 | 7,500 |
| 1000 | 66.6667 | 1000 | 15,000 |
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