Recent Blogs
Stevedore Knot Mechanism Explained: How It Works, Parts, Uses, and Sheave Jam Calculator
Learn how the Stevedore Knot works as a stopper knot for sailing rigs and load handling, with sizing rules, worked examples, and comparison to figure-8...
Timber Hitch: Rope Arrangement and Illustrative Geometry
Explore the timber-hitch rope arrangement and illustrative wrap dimensions. The calculator does not predict grip, capacity or safe rigging.
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...
Round Turn and Half Hitch: Mechanism, Capstan Formula, Parts, and Mooring Uses Explained
Round turn and two half hitches knot explained — how the wraps absorb load, breaking-strength figures, and real mooring and rigging applications.
Figure-Eight Knot: Forms and Assumed Strength Comparison | FIRGELLI
Compare assumed rope-strength retention and load arithmetic. Learn the distinction between figure-eight forms and why the outputs do not certify a rope system.
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.