Lashing

Lashing is a method of binding or securing objects together with rope, cordage, or other flexible members. By wrapping and tying around a frame or load, lashings create a rigid joint or hold components in position. The technique is used in ship rigging, scaffolding, and fieldcraft to connect poles, secure cargo, or stabilize temporary structures.

In maritime and field settings, lashings bind spars and rigging on boats and ships, help secure masts and yards, and are used to fasten tents, shelters, or other temporary constructs. They also secure cargo on vehicles and ships, distributing load and preventing movement during transport. Lashings are taught in many outdoor and scouting programs as practical skills for construction and rescue contexts.

Common lashings include square lashing, diagonal lashing, and shear lashing. Square lashing binds two spars at right angles to form a stable corner; diagonal lashing crosses from one spar to the other to resist racking; shear lashing connects two spars in the same plane to create a bracket-like joint. Each uses turns around the poles and frapping turns to tighten, finished with binding hitches.

Techniques and knots often involve a timber hitch or clove hitch to start, followed by wraps around the limbs, tight frapping turns, and a final set of hitches to secure the ends. Materials range from natural fibers to synthetic ropes, with strength and diameter chosen to suit the load. Proper inspection for wear and appropriate load ratings are essential for safety.