Double bowline

Double bowline

Names	Double bowline, Round Turn Bowline, Double-Knotted Bowline
Category	Loop
Efficiency	70-75%
Related	Bowline, Water bowline, Double sheet bend, Bowline on a bight
Typical use	climbing
ABoK	#1013

A double bowline (or round turn bowline) is a type of loop knot. Instead of the single turn of the regular bowline, the double bowline uses a round turn. This forms a more secure loop than a standard bowline.^[1]

Naming

Though called "double bowline" by Clifford Ashley, this name is also reasonably descriptive of a different knot: the bowline on a bight. Because of this ambiguity some sources differentiate by using one of the alternate names above. And at least one other source uses the name "double bowline" for a mid-line loop knot made by tying a basic bowline with a bight of rope instead of the end.^[2]

Tying

First, learn to tie the bowline by laying the working end on the standing part and twisting to form a loop (the "hole" that the rabbit comes out of). Wrap the loop once more around the working end. Then pass the working end behind the standing part and back down through the double loop.

Uses

The double bowline is one of the typical tie-in knots used in climbing, along with the figure eight loop^[3]^[4] and the Yosemite bowline.^[5]^{p. 136}. The advantage of the double bowline over the figure 8 is that it is easier to untie after being weighted in a fall.^[3]^[4]

The double bowline is commonly used by sport climbers who take multiple lead falls and then have trouble untying their figure eights.^[3]^[4] The disadvantage of the double bowline is that it is less secure than a figure eight knot.^[3]^[4]

The Bowline on a bight, when re-threaded instead of being tied on a bight, can also be used for tying into a climbing harness and provides more strength and security than the double bowline.

References

↑ Ashley, Clifford W (1944). The Ashley Book of Knots. New York: Doubleday. p. 186. ISBN 978-0-385-04025-9. OCLC 156951323.
↑ Cox, Steven M.; Fulsaas, Kris, eds. (2003). Mountaineering: The Freedom of the Hills (7th ed.). The Mountaineers Books. p. 119. ISBN 978-0-89886-827-2.
↑ 3.0 3.1 3.2 3.3 Luebben, Craig (Seattle, WA). Rock Climbing: Mastering Basic Skills. 2004: Mountaineers Books. p. 301. ISBN 978-0-89886-743-5. Check date values in: |date= (help)
↑ 4.0 4.1 4.2 4.3 Green, Stewart M; Ian, Spencer-Green; Mark, Doolittle (2010). Knack Rock Climbing: A Beginner's Guide: From the Gym to the Rocks. Guilford, Connecticut: Globe Pequot. p. 256. ISBN 978-1-59921-852-6.
↑ Kidd, Timothy W.; Hazelrigs, Jennifer (2009). Rock Climbing. Human Kinetics. ISBN 9781450409001. Retrieved 12 October 2014.

External links

http://notableknotindex.webs.com/doublebowline.html

Knots

By type

Bends	Adjustable bend Albright special Alpine butterfly bend Ashley's bend Basket weave knot Beer knot Blood knot Carrick bend Double fisherman's knot Fisherman's knot Flemish bend Grief knot Halyard bend Harness bend Heaving line bend Hunter's bend Nail knot One-sided overhand bend Racking bend Sheet bend Shoelace knot Shroud knot Simple Simon under Single carrick bend Surgeon's knot Surgeon's loop Triple fisherman's knot True lover's knot Water knot Zeppelin bend Zeppelin loop

Binding	Boa knot Bottle sling Constrictor knot Corned beef knot Granny knot Ground-line hitch Jamming knot Miller's knot Packer's knot Reef knot Strangle knot Thief knot Transom knot

Climbing	Alpine butterfly knot Autoblock Bachmann knot Beer knot Bowline on a bight Directional figure eight Double anchorman knot Double bowline Farmer's loop Figure-eight knot Figure-eight loop Figure-of-nine loop Friction hitch Klemheist knot Munter hitch Overhand loop Prusik Trident loop Yosemite bowline

Coils	Alpine coil Butterfly coil

Decorative	Carrick mat Chinese button knot Celtic button knot Diamond knot Fiador knot Friendship knot Matthew Walker knot Turk's head knot Wall and crown knot

Fishing (angling)	Angler's loop Arbor knot Bimini twist Blood knot Fisherman's knot Half blood knot Improved clinch knot Knotless knot Nail knot Palomar knot Snell knot Trilene knot Triple fisherman's knot Turle knot Uni knot

Hitches	Adjustable grip hitch Anchor bend Axle hitch Bachmann knot Bale sling hitch Barrel hitch Becket hitch Blackwall hitch Blake's hitch Boom hitch Buntline hitch Cat's paw Clove hitch Cow hitch Double overhand noose Falconer's knot Farrimond friction hitch Friction hitch Garda hitch Gripping Sailor's hitch Ground-line hitch Half hitch Halter hitch Highpoint hitch Highwayman's hitch Hitching tie Icicle hitch Improved clinch knot Killick hitch Knute hitch Lobster buoy hitch Marlinespike hitch Munter hitch Ossel hitch Pile hitch Snuggle hitch Timber hitch

Loop	Angler's loop Artillery loop Bale sling hitch Bowline Bumper knot Carrick bend loop Cowboy bowline Diamond knot Double bowline Dropper loop Eskimo bowline Fiador knot Fireman's chair knot Friendship knot loop Halter hitch Handcuff knot Honda knot Jury mast knot Overhand loop Portuguese bowline Rigid double splayed loop in the bight Slippery eight loop Span loop Spanish bowline Tom fool's knot Trident loop Triple bowline Triple crown knot Water bowline Yosemite bowline Zeppelin loop

Running (slip)	Hangman's knot Running bowline Running highwayman's hitch Slip knot Tarbuck knot

Shanks	Catshank Dogshank Sheepshank

Stopper	Ashley's stopper knot Button knot Double overhand knot Monkey's fist Stevedore knot

Whipping	Common whipping Overhand knot with draw-loop Portuguese whipping Sailmaker's whipping West Country whipping

Lists of knots
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Related topics	Chinese knotting International Guild of Knot Tyers Lashing Rope splicing Seizing