Which type of knot is useful for preventing a line from slipping through a cleat?

The figure eight bend knot is particularly effective in preventing a line from slipping through a cleat due to its secure structure and the way it interlocks when tied. This knot is designed to join two lengths of rope and creates a large loop that will not slip, making it ideal for securing lines to a cleat.

The design of the figure eight bend ensures that when tension is applied, the knot tightens against the cleat, which helps to keep the line securely in place. It's also recognized for its ease of undoing even after being heavily loaded, making it a preferred choice for applications in boating and other settings where secure yet manageable ties are necessary.

Other knots mentioned, while useful in different contexts, do not specifically serve the purpose of anchoring a line to a cleat as effectively as the figure eight bend. For example, the bowline knot creates a fixed loop at the end of a rope but is not designed to secure to a cleat effectively. The clove hitch can slip under certain conditions and is generally used for temporarily fastening a rope to a post or similar object, while the sheet bend is primarily used for joining two different-sized lines. Therefore, the figure eight bend is the best choice when securing a line against slipping on