Simple Simon under

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Simple Simon Under
Category Bend
Origin Harry Asher, published in 1989
Relatedsimple Simon over bend, simple Simon symmetric bend, reef (square) knot
Releasing Fair
Typical usesuitable for dissimilar ropes, works well with synthetic ropes.

The simple Simon under bend is a knot belonging to the category bend. It was invented by Harry Asher. [1] It is more secure than the similar simple Simon over. The difference is just which of the green ends in the image below is the standing end.

Knot method of fastening or securing linear material, such as rope, by tying or interweaving

A knot is an intentional complication in cordage which may be useful or decorative. Practical knots may be classified as hitches, bends, splices, or knots. A hitch fastens a rope to another object; a bend unites two rope ends; a splice is a multi-strand bend or loop. A knot in the strictest sense serves as a stopper or knob at the end of a rope to keep that end from slipping through a grommet or eye. Knots have excited interest since ancient times for their practical uses, as well as their topological intricacy, studied in the area of mathematics known as knot theory.


The simple Simon under holds well even with different sized ropes, or slippery synthetic ropes. [2]

Rope linear collection of plies, yarns or strands which are twisted or braided together

A rope is a group of yarns, plies, fibers or strands that are twisted or braided together into a larger and stronger form. Ropes have tensile strength and so can be used for dragging and lifting. Rope is thicker and stronger than similarly constructed cord, string, and twine.


Illustrations showing process of tying the simple Simon under bend knot. Tie-a-simple-simon-under.svg
Illustrations showing process of tying the simple Simon under bend knot.

See also

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Sheepshank knot

A shank is a type of knot that is used to shorten a rope or take up slack, such as the sheepshank. The sheepshank knot is not stable. It will fall apart under too much load or too little load.

Figure-eight knot type of stopper knot used in sailing and climbing

The figure-eight knot or figure-of-eight knot is a type of stopper knot. It is very important in both sailing and rock climbing as a method of stopping ropes from running out of retaining devices. Like the overhand knot, which will jam under strain, often requiring the rope to be cut, the figure-of-eight will also jam, but is usually more easily undone than the overhand knot.

The figure-eight or figure-of-eight knot is also called the Flemish knot. The name figure-of-eight knot appears in Lever's Sheet Anchor; or, a Key to Rigging. The word "of" is nowadays usually omitted. The knot is the sailor's common single-strand stopper knot and is tied in the ends of tackle falls and running rigging, unless the latter is fitted with monkey's tails. It is used about ship wherever a temporary stopper knot is required. The figure-eight is much easier to untie than the overhand, it does not have the same tendency to jam and so injure the fiber, and is larger, stronger, and equally secure.

A whipping knot or whipping is a binding of marline twine or whipcord around the end of a rope to prevent its natural tendency to fray. The whipping can be made neat and permanent by tying it off or sewing the ends of the twine through the rope. According to The Ashley Book of Knots, "The purpose of a whipping is to prevent the end of a rope from fraying...A whipping should be, in width, about equal to the diameter of the rope on which it is put...[Two sailmaker's whippings], a short distance apart, are put in the ends of every reef point, where the constant "whipping" against the sail makes the wear excessive; this is said to be the source of the name whipping." The other type of stopping knot is a seizing knot.

Butterfly bend

The butterfly bend is a knot used to join the ends of two ropes together. It is the analogous bend form of the butterfly loop, in that it is the butterfly loop with the loop cut. The observation that the butterfly loop is secure enough to isolate a worn or damaged section of rope within the loop indicated that the bend form of the knot would be similarly secure.

Timber hitch a knot used to secure a line to a log or spar

The timber hitch is a knot used to attach a single length of rope to a cylindrical object. Secure while tension is maintained, it is easily untied even after heavy loading.

Zeppelin bend bend knot

A Zeppelin bend is a symmetrical and inherently secure end-to-end joining knot. It is remarkable because it is stable and secure and totally resistant to jamming. It is resistant to the effects of slack shaking and cyclic loading. There is no load test that has managed to induce jamming. The structure fundamentally consists of 2 interlinked overhand knots (#515). The Zeppelin bend has point inversion symmetry.

Sheet bend bend knot

The sheet bend is a bend. It is practical for joining lines of different diameter or rigidity.

Becket hitch

A becket hitch, including the double becket or figure-of-eight becket hitch, is any hitch that is made on an eye loop, i.e. on a becket. A becket hitch has the same structure as the sheet bend, which joins, or "bends", the ends of two ropes together. The becket hitch, in contrast, fixes a rope to a closed eye or hook. In this instance, a becket means the eye or hook of a pulley block, an eye in the end of a rope, or a rope handle on a sailors sea chest.

Offset overhand bend

The offset overhand bend is a knot used to join two ropes together. The offset overhand bend is formed by holding two rope ends next to each other and tying an overhand knot in them as if they were a single line. Due to its common use in several fields, this bend has become known by many names, such as thumb knot, openhand knot, one-sided overhand knot or flat overhand bend (FOB), though the terms "one-sided" and "flat" are considered incorrect.

West Country whipping

The West Country whipping is a quick practical whipping knot, a method of using twine to secure the end of a rope to prevent it fraying. It has several advantages: it can be tied without a needle; it is simple to understand and remember; if the whipping fails, the loose ends can usually be re-tied to temporarily prevent the rope's end from fraying.

West Country whipping was the name given by Biddlecombe in 1848 to this particular practice, but most subsequent seamanship books, including the British Admiralty Manual of Semanship, have modified the name to West County whipping...I have not seen this whipping used but it has this advantage: if any part breaks it will be a very long while before the whole whipping lets go. The break will be evident and the whipping can be replaced in time.

Flemish bend

The Flemish bend, also known as a figure eight bend, a double figure eight bend, and a rewoven figure eight is a knot for joining two ropes of roughly similar size.

Ashleys bend

Ashley's bend is a knot used to securely join the ends of two ropes together. It is similar to several related bend knots which consist of two interlocking overhand knots, and in particular the alpine butterfly bend. These related bends differ by the way the two constituent overhand knots are interlocked.

Single carrick bend

The name single carrick bend has been used and even recommended by many different people to refer to different knots with a similar general form to the carrick bend. All of these knots are weaker and less secure for the purpose of a bend which is the connection of two rope ends. Several have other properties which make them desirable for specific uses.

Chain sinnet

A chain sinnet is a method of shortening a rope or other cable while in use or for storage. It is formed by making a series of simple crochet-like stitches in the line. It can also reduce tangling while a rope is being washed in a washing machine.

Triple fishermans knot

The triple fisherman's knot is a bend knot, used to join two ends of rope together. It is an extension of the double fisherman's knot and is recommended for tying slippery, stiff ultra-high-molecular-weight polyethylene (UHMWPE) and aramid cored ropes.

Harness bend

The harness knot is a general purpose bend knot used to join two ropes together. The knot can be tied under tension and will not capsize.

Reef knot type of knot

The reef knot, or square knot, is an ancient and simple binding knot used to secure a rope or line around an object. It is sometimes also referred to as a Hercules knot. The knot is formed by tying a left-handed overhand knot and then a right-handed overhand knot, or vice versa. A common mnemonic for this procedure is "right over left; left over right", which is often appended with the rhyming suffix "... makes a knot both tidy and tight". Two consecutive overhands of the same handedness will make a granny knot. The working ends of the reef knot must emerge both at the top or both at the bottom, otherwise a thief knot results.

The reef knot or square knot consists of two half knots, one left and one right, one being tied on top of the other, and either being tied first...The reef knot is unique in that it may be tied and tightened with both ends. It is universally used for parcels, rolls and bundles. At sea it is always employed in reefing and furling sails and stopping clothes for drying. But under no circumstances should it ever be tied as a bend, for if tied with two ends of unequal size, or if one end is stiffer or smoother than the other, the knot is almost bound to spill. Except for its true purpose of binding it is a knot to be shunned.

Reever Knot

The Reever Knot is a secure bend for joining two ropes. An important attribute of the knot is that each line going in and out of the knot is clamped at two points within the knot. For this reason it is considered secure and resistant to being shaken loose when subject to intermittent loads.


  1. Harry Asher, Alternative Knot Book, Sheridan House (August 1989).
  2. Geoffrey Budworth, The Ultimate Encyclopedia of Knots & Ropework (Anness Publishing Ltd., 1999, 2007), 73.
  3. Asher, Harry. (1989). The alternative knot book. Nautical. ISBN   0713659505. OCLC   19774858.