[quote=Wolfman]The other answer is a question of consequnces. If a figure 8 undoes itself on your boat your traveller flies to the stop and you scramble to retie it. If a figure 8 undoes itself on a crag you become a traveller that gets scrambled! :)
Sailors tend to favor knots that are easy to untie after being under extreme load and climbers are more concerned about holding power and reliability. That and their rope tends to have a lot of give in it where ours is prestretched/low stretch.
D.[/quote]
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