To address defects in traditional mooring cleats, Navy scientists and engineers have developed an improved cleat that allows for fast attachment of a line without the need to feed it through a cleat or chock and without the need to knot the end.
The open design has an overlapping horn with an angled slot that allows a line to be dropped into the fitting at any desired position and restrains the line against pull in any direction. While the rope can be attached in multiple patterns, slipping the rope through the angled slot at the start or end of the pattern produces a more secure mooring.