Sailboat Mooring Chock

My sailboat's mooring lines were getting frayed due to rubbing over the aluminum toe-rail, and I didn't care to install a standard deck chock as that would require drilling holes into the deck on the boat. This design snaps onto the toe-rail, and can slide back and forth to adjust to the correct angle for mooring at various slips and mooring floats. It is designed for 3/8" (10mm) mooring line.

I printed this in PETG and the slight flexability allows it to snap firmly onto the toe-rail without