"hippo" Large cylindrical fenders are often used as the primary pushing fenders on the bow or stern of modern tugs. Their round shape is ideal for working with large bow flares (like container ships), but are equally good for pushing flatsided vessels.
Tug cylindricals come in diameters to 1000 mm and in very long continuous or spigot joined lengths. A longitudinal chain runs down the centre of the fender, supplemented by circumferential straps or chains which are recessed into grooves. Tapered ends are also available.