Page 11 - Fendercare Marine - The Book

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Drawings and picture references are for illustration purposes only.
Fendering
Floating Fenders
Yokohama can demonstrate compliance to PIANC 2002 for floating
pneumatic fenders. Further information can be supplied on request.
Advantages
Safe for excess load
The reaction force of a floating pneumatic fender does not increase sharply
even under excess load. Therefore, these fenders perform extremely well
under such conditions and, as a result, protect ships and mooring facilities.
No deterioration or variation in performance
Because pneumatic fenders use the compressive elasticity of air, there
is no performance deterioration due to fatigue. The performance of
these fenders remains unchanged at extremely low temperatures,
even below -50°C.
Safety and reliability
Yokohama pneumatic rubber fenders are constructed using several layers
of strong tyre cord and are therefore extremely resistant to pressure and
cutting. The larger sizes (2.5m dia upward) are fitted with a safety valve to
prevent accidents in the event of over compression.
Construction
The fender body is constructed of an inner rubber layer, reinforcing cord
layers and an outer rubber layer. All of these layers are vulcanised together
and then proven by hydraulic pressure test.
The outer skin rubber compound is designed and manufactured to be
able to withstand both strenuous use including abrasion during adverse
weather conditions whilst protecting the cord layers and inner rubber.
The synthetic tyre cord layers are arranged at optimum angles designed
to distribute load and stress evenly. The inner rubber compound is
designed to be completely airtight, utilising a compound equivalent to
that of an inner tube of a car tyre.
To provide maximum strength and safety, the outer skin of a
hydro-pneumatic fender is thicker than a normal surface fender.
Flange opening
Inner rubber
Cord layers
Outer rubber
Typical cut section of fender wall