KNOTS & SPLICES

Eye Splice

A permanent loop spliced into the line itself — the strongest way to terminate a rope.

INSPECT BEFORE LOAD · NEVER EXCEED WLL

Rope, splices and hardware are only as good as their condition. Inspect before every use and retire on evidence.

Eye Splice — nautical chart line drawing

Specification

Type	Splice — permanent termination
Strength retention	90–95%
Easily untied	Not reversible
Suitable diameter	4–40 mm
Jam risk	Not applicable
Common error	Too few tucks; strands not tapered

Technical parameters

Retention (3-strand)	90–95%
Retention (double braid)	≈ 90%
Tucks required	3 minimum, 5 preferred
Time (3-strand)	15–25 min
Time (double braid)	30–60 min
Tools	Fid, pusher, tape, knife

TieLoad

Overview

An eye splice tucks the strands of the rope back into its own body to form a loop, so there is no knot at all in the load path. That is why it retains around ninety to ninety-five per cent of the line's strength, far more than any knot, and why it is the standard termination for halyards, sheets, mooring lines and anything that will live under load for a long time.

In three-strand line the method is to unlay the end, form the eye, and tuck each strand over one and under one, three to five times, tapering the strands as you go. In double braid the technique is different and more demanding — the core is spliced inside the cover and the two are married — but the result is the same: a loop that is part of the rope.

A splice is a permanent commitment. Once it is made the rope is shorter and the splice cannot be undone without cutting it out. It also needs a thimble where it will run against a shackle or a chain, or the loop will chafe through.

Safety notes

Five tucks, not three, for anything load-bearing. Three tucks hold for a demonstration and slip in service.
Always fit a thimble where the eye bears against metal, or chafe will cut the loop long before the splice fails.
A splice cannot be inspected internally. If the line has had a hard life, cut the splice out and remake it rather than trusting it.

Using it well

Tape the strands before you unlay them; a taped end is far easier to tuck.
Taper by cutting a third of the fibres from each strand on successive tucks so the splice runs out smoothly.
Roll the finished splice under your foot to settle it, then load it gently before service.

Suited to

Three-strandDouble braidHalyardsMooring lines

Typical applications

SailingRiggingPermanent termination

Figures are typical catalogue values for new equipment, quoted for comparison and planning. They are not a guarantee for any specific product or any specific load. Always work to the manufacturer’s stated working load limit and to the regulations that apply where you sail.

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