Designed to allow for boarding at transom - mounts directly on transom. Folds down and telescopes into water. Self-locking brackets hold ladder secure against transom. 4 steps allow for comfortable angled step up access under water line. 304 stainless steel - rated to 275 lbs. Bungee cord securing strap included. Nylon bushings between ladder sections provide smooth deployment. This product is not available at any merchants.