Mechanical Advantage Mast Climbing and GriGir
Discussion of mechanical advantage when climbing a sailboat mast unassisted especially using a Single Rope Technique (SRT) using a GriGri or similar repelling device.
Видео Mechanical Advantage Mast Climbing and GriGir канала Allen Edwards
Видео Mechanical Advantage Mast Climbing and GriGir канала Allen Edwards
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