​Gearing Formulae and Calculation

Many people use "rules of thumb" to rig a boat: often with disastrous consequences.    

Understand it better and you will reap the benefits.

Here is the detail of gearing,  If you understand this you will not need to guess what oars and rig to use.

See the App here:

https://itunes.apple.com/mz/app/rowing-calc/id983204342?mt=8

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