Recent Blogs
Capstan or Vertical Windlass Mechanism Explained: How It Works, Parts, Diagram, and Uses
Explore rope friction around a vertical capstan. Adjust tail tension, friction coefficient and turns to calculate an ideal impending-slip tension limit.
Half Hitch: Rope Strength Assumptions Calculator | FIRGELLI
Understand half-hitch rope contact and compare an assumed retained breaking strength with a factored line load. Results do not rate knot security or working load.