Gogarty wrote:
In article ,
fletopkanelbolle2rp.danmark says...

(Snip)

Based on the inputs on the subject, it is hard to know for
sure - isn't it?

Maybe we should call MythBusters?

Why not simply try it. Go sailing and have your knotmeter working
(mine doesnt work) with prop locked, record speed, unlock it and go for
a minute and record speed. Do this maybe 10 times and average. Tell
us what happens. Theory and talk is great but reality makes the world
work.