HVG MARINE FENDER 0018: Pile Pretection Donut Foam Fender on River or Sea Channel

Donut fenders are designed to float up and down with the tide on a circular mono-pile either driven into the bed or mounted on the face of a quay wall. Donut fenders are suited for lock entrances, turning structures, approach chan-nels and breasting dolphins. Not only do Donut fenders rise and fall with the tide but due to the low friction guides located inside the fender they also rotate around the pile assisting in lining up vessels for mooring or guiding though a channel.

Construction of a Donut fender is much the same as a Foam Filled Floating Fender giving them all the ideal properties for optimal, maintenance free use. As with the foam fenders any variation of size is feasible allowing the fender to be sized to fit its purpose, they are unsinkable and can be finished in a variety of colors.

Donut Fenders are available in diameters from 1,270 mm to 4,220 mm and a maximum pile diameter of 610 mm to 2,388 mm. Additionally, mooring crowns, counterweights (for sub-marine applications) or other features like protective nettings can be added.

The foam hardness, skin thickness, pile/fender diameter and also the height of the fender can be changed on request. ShibataFenderTeam would be pleased to receive your design input allowing us to engineer the correct type, size and overall layout of the Donut Fender.

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Characters on Floating Donut Fender

• 1. Proportional load deflection curve
• 2. Low shear forces
• 3. Self-adjusting to changing water levels
• 4. Low installation costs
• 5. Generally maintenance free
• 6. Individual drafts can be controlled by counterweights

Floating Donut Fender Applications

• 1. Locks and dry dock entrances, corner protection, turning dolphins, areas with large tidal variations or bridge protections
• 2. Other monopile structures
• 3. Submarine jetties