Recent Blogs
Square or Reef Knot Mechanism: How It Works, Diagram, Parts, Uses and Strength Formula Explained
How the Square or Reef Knot works, why sailors use it for reefing sails, where it fails, and how to tie it correctly for binding...
Sheet Bend and Toggle Mechanism: How It Works, Diagram, Parts, Uses and Safe Load Formula
Sheet Bend and Toggle explained — how this quick-release rope joint works, why riggers and sailors use it, with worked load math and failure diagnostics.
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.
Clove Hitch Mechanism Explained: How It Works, Parts, Capstan Formula, Uses & Diagram
Trace the clove hitch’s two turns and crossing segment. Compare ideal capstan friction separately, with clear limits on knot strength and tail security.
Carrick Bend Knot Mechanism: How It Works, Diagram, Parts, Uses, and Strength Formula
Inspect the Carrick bend’s interwoven rope paths. Compare entered strength assumptions and pull against an illustrative limit; the calculation does not rate a real knot.