Usage: The Taut-Line Hitch is an adjustable loop knot for use on lines under tension. It is useful when the length of a line will need to be periodically adjusted in order to maintain tension. It is made by tying a rolling hitch around the standing part after passing around an anchor object. Tension is maintained by sliding the hitch to adjust size of the loop, thus changing the effective length of the standing part without retying the knot.
It is typically used for securing tent lines in outdoor activities involving camping, by arborists when climbing trees, for creating adjustable moorings in tidal areas, and to secure loads on vehicles.

Also known as:

• Midshipman’s Hitch
• Tent-line Hitch
• Rigger’s Hitch

Related:

• Two Half Hitches
• Rolling Hitch
• Trucker’s Hitch

ABOK: 1856, 1855, 1857

Classification: Hitch

Structure: The Taut-line Hitch is closely related to the Two Half Hitches but with an additional inside turn. There are also several variations of the Taut-Line: See also ABOK #1855, #1857. The version shown here, ABOK #1856, is the form espoused by the Boy Scouts of America.

Strength/Reliability: The Taut-Line hitch should not be depended on to hold fast under all conditions. With lines made from particularly stiff or slick modern fibers (e.g. polypropylene), the hitch can be difficult to make hold at all. The hitch can be made more secure by using additional initial wraps and finishing half-hitches.