The gray 4-step IMNASA ladder-defense is designed to provide a versatile solution that combines secure boat access and lateral hull protection. Made from high-strength marine PVC, it acts as a defense against impacts when vertically placed on the side, while its four non-slip steps allow for comfortable boarding from the dock or water. It is easy to install using ropes or brackets and adapts to different types of vessels, especially those that require practicality and space-saving without sacrificing functionality.