Boat Fender Low Surface Pressure Corrosion Resistant Flexible Application Product Overview Tug Boat Fenders are marine rubber protection systems engineered for tugboats that perform repetitive vessel contact during towing, pushing, escort, berthing assistance, shipyard maneuvering, offshore positioning, and floating structure handling. The fender system is installed at designated areas of the tug hull to create a controlled interface between the tug and the contacted vessel