Transom Knot
Also known as: Square Lashing Knot
binding knot
Joining two poles at a right angle doesn't always need the full multi-stage process of a proper square lashing - sometimes a quick, light binding is all a temporary frame, camp furniture joint, or field repair actually calls for. The transom knot fills that gap: a simplified figure-eight wrap around the crossing poles, cinched with a few frapping turns and finished with a locking clove hitch, quicker to tie than a full square lashing while still holding a light-duty right-angle joint together.
The technique borrows the same core figure-eight wrapping pattern a square lashing uses, but with fewer wraps and less emphasis on the tensioning frapping turns that give a full lashing its real rigidity - a reasonable tradeoff when the joint won't bear serious structural load.
Scouting and bushcraft instruction often introduces the transom knot as a stepping stone toward the fuller square lashing, since the core wrapping motion is identical and the transom knot's simpler, faster version is genuinely easier to learn and practice first.
For anything that actually needs to bear real weight - a shelter's structural frame, a raft, a tripod for hoisting - the additional wraps and properly tensioned frapping turns of a full square or shear lashing are worth the extra time; the transom knot is best reserved for lighter, more temporary right-angle joints where speed matters more than maximum rigidity.
Its alternate name, the square lashing knot, causes some genuine confusion since it's really a simplified relative of the square lashing rather than an alternate name for the exact same technique - a distinction worth clarifying for anyone learning from mixed sources, since assuming the two are identical could lead someone to under-build a joint that actually needs the fuller lashing's real load-bearing rigidity.
A quick way to judge which technique a given project needs: if the joint would be genuinely dangerous or costly to have fail (a raft that will carry a person, a tripod hoisting a real load), build the full square lashing with proper frapping; if the joint is simply holding something together for convenience (a camp table leg, a temporary garden trellis), the faster transom knot is entirely adequate and saves real time across a project with many such joints.
How to tie the Transom Knot
Lay two poles crossing at right angles and hold the cord's end against the joint.
Strength & security
A simple, fast binding for joining two poles at a right angle where the load is light and temporary - genuinely useful for camp furniture, small frames, or a quick repair, though it doesn't match a full square lashing's rigidity for anything load-bearing.
Cautions: It's a lighter-duty binding than a properly tensioned square lashing with full frapping turns - for a structural joint meant to bear real weight (a shelter frame, a raft, a tripod), the more involved square or shear lashing is the better choice.
Alternatives
- Square Lashing
The more robust, fully developed version of the same right-angle joining idea, with more wraps and frapping turns for genuine structural load-bearing use.
FAQ
Is the transom knot as strong as a square lashing?
No - it's a simpler, faster version meant for light-duty or temporary right-angle joints. A full square lashing with proper frapping turns is meaningfully more rigid for structural use.
When should I use the transom knot instead of a square lashing?
For quick camp furniture, small frames, or temporary repairs where speed matters more than maximum joint rigidity - use a full square lashing for anything load-bearing.
Is the transom knot a good knot to learn before the square lashing?
Yes - it uses the same core figure-eight wrapping motion, so learning the simpler transom knot first is a reasonable way to build toward the fuller square lashing technique.
Is the transom knot really the same as the square lashing, given its alternate name?
No, despite sometimes being called the square lashing knot - it's a simplified relative with fewer wraps and lighter frapping, not a full substitute wherever genuine structural load-bearing rigidity is actually needed.
Can the transom knot be tightened further after it's tied?
Only by untying and redoing the frapping turns - unlike an adjustable hitch, once the wraps are cinched and the finishing clove hitch is set, the joint's tension is essentially fixed rather than something that can be tweaked in place.