Convert Shackle to Shaftment - Free Calculator
Fast, accurate all length conversions conversion calculator. Convert shackle to shaftment instantly with precise results.
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How to Convert Shackle to Shaftment
Use this free online calculator to convert Shackle to Shaftment instantly. This all length conversions conversion tool provides accurate results for all your measurement needs.
Quick Reference
Shackle to Shaftment Conversion Formula
To convert Shackle to Shaftment, multiply by 181.3806.
To convert Shaftment back to Shackle, divide by 181.3806 (or multiply by 5.513e-3).
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 Shaftment
A shaftment, when used as a unit of length, is usually six inches or two palms, i.e. 15.24 cm (for the international inch). It is thought to be the distance from the tip of the outstretched thumb to the other side of the palm.In English this unit has mostly fallen out of use, as do others based on the human arm: digit (1/8 shaftment), finger (7/48 shaftment), palm (½ shaftment) hand (2/3 shaftment), span (1½ shaftments), cubit (3 shaftments) and ell (7½ shaftments).
Shackle to Shaftment Conversion Table
| Shackle | Shaftment | Shaftment | Shackle |
|---|---|---|---|
| 0.1 | 18.1381 | 0.1 | 5.513e-4 |
| 0.5 | 90.6903 | 0.5 | 2.757e-3 |
| 1 | 181.3806 | 1 | 5.513e-3 |
| 2 | 362.7612 | 2 | 0.011027 |
| 5 | 906.9029 | 5 | 0.027566 |
| 10 | 1813.81 | 10 | 0.055133 |
| 20 | 3627.61 | 20 | 0.110265 |
| 25 | 4534.51 | 25 | 0.137832 |
| 50 | 9069.03 | 50 | 0.275663 |
| 100 | 18138.06 | 100 | 0.551327 |
| 250 | 45345.15 | 250 | 1.3783 |
| 500 | 90690.29 | 500 | 2.7566 |
| 1000 | 181380.59 | 1000 | 5.5133 |
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