Uni knot

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Uni Knot
Uni knot.jpg
NamesUni Knot, Gallows knot, Duncan Loop, Grinner knot
Category Hitch
Category 2 Bend
Related Double overhand noose
Typical use Fishing
ABoK #1121

The uni knot is a multi purpose fishing knot that can be used for attaching the fishing line to the arbor of a reel, for joining lines, and for attaching lures, snaps, and swivels.



The knot, shown with three passes, was published in 1944 under the name gallows knot (#1121) in The Ashley Book of Knots. Ashley notes that it is actually an alternate arrangement of the multiple overhand noose. His diagram shows how the knot can be manipulated into the more familiar form. [1]

This knot is also called the Duncan loop, after Norman Duncan who developed it independently as a fishing knot in the early 1960s. [2] The knot was popularized as the uni knot by Vic Dunaway, an editor at the Miami Herald, in a 1970 fishing book. [3] [4]

Currently, in American English the knot is known as the Uni-knot referring to its ability to work with mono-filament or fluorocarbon fishing lines. However, in British English it is commonly known as the Grinner Knot. [5]

The Uni knot is used by popular television host Jeremy Wade, on the Animal Planet TV series River Monsters. [6]


The uni knot is widely used for attaching hooks, rings and swivels to the end of the line [7] and it is also used for joining two fishing lines together. [8] [9] The bend form of the uni knot (for joining two lines) is not a noose; rather it is akin to a multiple fisherman's knot with the two opposing knotted parts arranged in the manner of uni knots. [10]

The uni knot retains much of the fishing line breaking strength and the uni knot works well with monofilament, fluorocarbon [11] and braided [12] fishing lines.

See also

Related Research Articles

Butterfly loop Knot used to form a fixed loop in the middle of a rope

The butterfly loop, also known as lineman's loop, butterfly knot, alpine butterfly knot and lineman's rider, is a knot used to form a fixed loop in the middle of a rope. Tied in the bight, it can be made in a rope without access to either of the ends; this is a distinct advantage when working with long climbing ropes. The butterfly loop is an excellent mid-line rigging knot; it handles multi-directional loading well and has a symmetrical shape that makes it easy to inspect. In a climbing context it is also useful for traverse lines, some anchors, shortening rope slings, and for isolating damaged sections of rope.

Trolling (fishing) The practice of fishing by drawing a baited line or lure behind a boat

Trolling is a method of fishing where one or more fishing lines, baited with lures or bait fish, are drawn through the water. This may be behind a moving boat, or by slowly winding the line in when fishing from a static position, or even sweeping the line from side-to-side, e.g. when fishing from a jetty. Trolling is used to catch pelagic fish such as salmon, mackerel and kingfish.

Fishing line

A fishing line is a cord used or made for angling. Fishing lines generally resemble a long, thin string, and vary in material. Important attributes of a fishing line include length, material, weight, and thickness. Other factors relevant to certain fishing environments include breaking strength, knot strength, UV resistance, castability, limpness, stretch, abrasion resistance, and visibility. Most modern lines are made from nylon, braided polymers, or silk.

Marlinespike hitch

The marlinespike hitch is a temporary knot used to attach a rod to a rope in order to form a handle. This allows more tension than could be produced comfortably by gripping the rope with the hands alone. It is useful when tightening knots and for other purposes in ropework.

Blood knot

A blood knot is a bend knot most usefully employed for joining sections of monofilament nylon line while maintaining a high portion of the line's inherent strength. Other knots used for this purpose can cause a substantial loss of strength. In fly fishing, this serves to build a leader of gradually decreasing diameter with the castable fly line attached at the large diameter end and the fly or hook at the small diameter end. The principal drawback to the blood knot is the dexterity required to tie it. It is also likely to jam, which is not a concern in fishing line, which is no great loss to cut, but may be a concern in normal rope. "Blood knot" may refer to "a double overhand knot tied in a cat-o'-nine-tails."

The barrel knot, called blood knot by Keith Rollo, is the best bend there is for small, stiff or slippery line. The ends may be trimmed short and the knot offers the least resistance possible when drawn through water.

Cats paw (knot)

The Cat's paw is a knot used for connecting a rope to an object. It is very similar to the cow hitch except there is an additional twist on each side of the bight, making it less prone to slipping.

The cat's-paw is the common hook hitch for slings. It is the same basic form as the bale sling hitch but has additional twists. Brady says "two or three altogether," and Steel, who mentioned the name in 1794, says "three twists." It is the best of all sling hitches and is often recommended for a slippery rope. But no hitch can slip when tied in a slings since it has no ends. All that is needed is a hitch that cannot jam, and this requirement the cat's-paw fills admirably. The knot spills instantly when removed from the hook. It is the hitch always used for heavy lifts.

Sheet bend

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

Running bowline

The running bowline is a knot consisting of a bowline looped around its own standing end to create a noose.

Buntline hitch

The buntline hitch is a knot used for attaching a rope to an object. It is formed by passing the working end around an object, then making a clove hitch around the rope's standing part and taking care that the turns of the clove hitch progress towards the object rather than away from it. Secure and easily tied, the buntline hitch will jam when subjected to extreme loads. Given the knot's propensity to jam, it is often made in slipped form.

The buntline hitch, when bent to a yard, makes a more secure knot than two half hitches, but is more liable to jam. It differs from two half hitches in that the second half hitch is inside instead of outside the first one.

Ashleys stopper knot

Ashley's stopper knot, also known as the oysterman's stopper, is a knot developed by Clifford W. Ashley around 1910. It makes a well-balanced trefoil-faced stopper at the end of the rope, giving greater resistance to pulling through an opening than other common stoppers. Essentially, the knot is a common overhand noose, but with the end of the rope passing through the noose eye, which closes upon it. It may be multiplied to form a larger knot with more than three bights appearing around the knot. It is the result of implementing a double wall knot in one strand.

A downrigger is a device used while fishing using the trolling method, which places a lure at the desired depth. A downrigger consists of a three to six-foot horizontal pole which supports a cannonball, generally 10 to 15 pounds, by a steel cable. A clip, also known as a "release," attaches a fishing line to the cannonball weight. The bait or lure is attached to the release.

Nail knot

The nail knot, also known as the tube knot or gryp knot, is mostly used in carp and fly-fishing. The nail knot was named because a nail was inserted as a guide when threading the line. Today, it is easier to use a small straw. The nail knot is an important fishing knot used to join two lines of different diameters and allows for line diameters to diminish down to the fly. I.E., it is useful for attaching your backing to the fly line, and your fly line to the leader, or tippet. The knot can be tied in multiple ways and is uniform.

Improved clinch knot

The improved clinch knot, also known as the Salmon Knot, is a knot that is used for securing a fishing line to the fishing lure, but can also affix fishing line to a swivel, clip, or artificial fly. This is a common knot used by anglers because of its simple tie and strong hold. When more pull is being applied, the harder the knot turns into itself, increasing the strength of the connection. It can be used with many kinds of line including mono-filament, fluorocarbon, and braided fishing line.

Fishing tackle Equipment used for fishing

Fishing tackle is the equipment used by anglers when fishing. Almost any equipment or gear used for fishing can be called fishing tackle. Some examples are hooks, lines, sinkers, floats, rods, reels, baits, lures, spears, nets, gaffs, traps, waders and tackle boxes.

Braided line was one of the earliest types of fishing line, and in its modern incarnations it is still very popular in some situations because of its high knot strength, lack of stretch, and great overall power in relation to its diameter. Braids were originally made from natural fibers such as cotton and linen, but natural fiber braids have long since been replaced by braided or woven fibers of a man-made materials like Dacron, Spectra or micro-dyneema into a strand of line. Braided fishing lines have low resistance to abrasion, sharp objects can easily cut braided line. Their actual breaking strength will commonly well exceed their pound-test rating.

Drop shotting is a high finesse technique for fishing plastic baits, and consists of a small thin-wire hook with a weight attached to the tag end of the line. This is in contrast to the more traditional Texas Rig, where the weight slides inline, resting on the nose of the bait, or the Carolina Rig, where the weight is fixed above the bait. The drop shot rig provides the ability to keep a lure off the bottom, with weightless action. Usually the bait is fished by letting the weight hit the bottom and then shaking the lure by twitching the rod. But can also be flipped, dragged, hopped, or jigged along the bottom. This simple, but versatile technique has endless combinations with the different hooks, soft plastics and weights that can be used.[1] The aim is to present a free floating, slow twitching lure to induce a strike from non-aggressive fish. This rigs known use is in bass fishing commonly used for catching Smallmouth Bass, Largemouth Bass, and Spotted Bass. But can also be used for a variety of other fish species.


A Z-Drag or Z-Rig is an arrangement of lines and pulleys, effectively forming a block and tackle, that is commonly used in rescue situations. The basic arrangement results in pulling the hauling end 3 times the distance the load is moved, providing a theoretical mechanical advantage of three to one. In actual practice the advantage will be reduced by friction in the pulleys or carabiners. The advantage will also be reduced if the pull on the hauling end is not parallel to the direction the load moves in. The name comes from the fact that the arrangement of lines is roughly Z shaped. Besides the mechanical advantage to pulling, it also uses only part of the total length of the rope for the block and tackle arrangement.

Rig (fishing)

A rig is an arrangement of items used for fishing. It can be assembled of one or more lines, hooks, sinkers, bobbers, swivels, lures, beads, and other fishing tackle. A rig might be held by a rod, by hand, or attached to a boat or pier. Some rigs are designed to float near the surface of the water, others are designed to sink to the bottom. Some rigs are designed for trolling. Many rigs are designed especially for catching a single species of fish, but will work well for many different species.


  1. Ashley, Clifford W. (1944), The Ashley Book of Knots, New York: Doubleday, p. 204
  2. "More 30-Minute Fly Art: the Deceiver". MidCurrent. Retrieved 30 May 2013.
  3. "FWC Recognizes Vic Dunaway". Florida Sportsman. Retrieved 12 May 2010.
  4. "Dunaway's way". boats.com. Retrieved 12 May 2010.
  5. "Differences between fishing in America and Britain". boat-duesseldorf.com/. Retrieved 15 August 2014.
  6. "Contact Jeremy Wade" . Retrieved 2014-08-15.
  7. Geoff Wilson (2003). Encyclopedia of Fishing Knots & Rigs. Australian Fishing Network. ISBN   1865130400.
  8. "UNI-KNOT - JOINING 2 FISHING LINES" . Retrieved 2017-04-26.
  9. "Encyclopedia of Fishing Knots and Rigs" . Retrieved 2020-04-26.
  10. "The Uni Knot" . Retrieved 2013-11-25.
  11. "Understanding Fluorocarbon Lines" . Retrieved 2014-08-15.
  12. "The Uni-Knot System" . Retrieved 2017-04-26.