You need to find the right boat fenders for your boat. Fenders are commonly found on board as part of boating equipment essentials. Sometimes boat owners or customers are often unsure which fender is right for their boat and how many boat fenders are needed. This article provides answers to such and other basic questions. If you know, a boat fender is an inflatable protective prop that prevents scratches and other damage to a boat's hull while navigating through marinas. Whether long or round, blue, white, red, green, or yellow - boat fenders help protect your vessel. They also safeguard when a boat is towed or during boat-to-boat contact. Depending on the size of the boat, fenders are available in different sizes and shapes.