Capstan (nautical)
rotating machine used to control or apply force to another element
A capstan is a machine that is used on sailing ships to pull ropes and cables (also called hawsers). It has a vertical axle, and is very much like the windlass, which has a horizontal axle.
Grip on power pull capstan and it's opposite brakeforce on bollard posts; both work thru Capstan Equation
Man powered capstan is a 2nd Class Lever concentrating man force inwards to smaller radius for more power from levers.
Motor powered capstan spins motor shaft from inside post/not outside levers so is a 3rd Class Lever delivering force wider radius than motor shaft force input.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d4/CapstanCrewModel.jpg/220px-CapstanCrewModel.jpg)
- Ship side old school man powered capstan power pull (missing levers). Bollard posts for brakeforce hold.
- Harbor side man powered capstan with levers removed. Given plenty of turning room to crank levers. Also space in wall to serve pulling rope out to ship drawing towards pier.
- Navy sailors tailing motor driven capstan still used on US Nimitz 2005. Once again capstan for power pull, and contrasting bollard post for anti-pull of brakeforce.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
Wikimedia Commons has media related to Capstans (nautical).
🔥 Top keywords: Main PageSpecial:SearchSupreme Court of the United StatesList of UEFA European Championship finalsWikipedia:AboutList of U.S. statesHelp:ContentsHelp:IntroductionKnights of the Round TableList of Disney moviesBlackSpecial:RecentChangesGodzilla X Kong: The New EmpireList of people who have walked on the MoonList of U.S. states and territories by time zoneUnited StatesThe Garfield MovieEducation24-hour clockEid al-AdhaGolden EdgeQueen (band)List of countries by continentsAviciiBig Mac IndexAdolf Hitler UunonaUmro Ayyar - A New BeginningMurder of Junko FurutaHelp:Authority controlCristiano RonaldoBismillahir Rahmanir Raheem19 Kids and CountingSOLID (object-oriented design)Jude BellinghamXXXTentacionLisa SparxxxPeriodic tableList of fruitsBTS