This knot will be used in many of your starts for your lashings along with rowing, small boat sailing, pioneering, and first class rank.

The two half-hitches is a type of knot, specifically a binding knot or hitch knot. It consists of an overhand knot tied around a post, followed by a half-hitch. Equivalently, it consists of a half-turn around a post followed by a clove hitch of the running end around the standing part.