Marine Vessel Ship Yokohama Pneumatic Rubber Fender With Chain And Tyre Net
Rubber boat fender also called marine fender, pneumatic fender, rubber fender, yokohama fender, made by rubber & multi layer of rubber-dipped tyre fabric, is a leading anti-collision device for marine application in the world today.
Boat fenders have become an ideal ship protection medium against collision among ship-to-ship (STS), ship to quay (STQ) and ship-to-berthing (STB), they are widely used for large tankers, vessels, docks, harbor wharfs and ocean platforms.
||Pneumatic marine fender
||STS, STD, STB
||ISO, BV, CCS, RS
Features of pneumatic rubber fender/Yokohama pneumatic fender
1. High energy absorption with a low reaction force
2. Light weight, portable and floatable, can be installed and replaced easily
3. Heavy duty and long service life-over 10 years
4. Supplied as sling type (body only) or with chain and tire net for protection of the fender body
5. Suitable for locations with large and small tidal differences
Advantages rubber ship bumper:
1. Large compression deformation, low reaction force, high energy absorption
2. Good floating performance, meet the needs of water level change
3. With compressed air as medium, the collision energy consumption bu compressed air power
4. Easy installation and long service life
Application of Rubber Inflatable Fender
--Oil and gas tankers
--Fast ferries and aluminium vessels
--Temporary and permanent installations
--Rapid response and emergencies
--Can support large panels
--Very low reaction and hull pressure
--Suitable for small and large tidal ranges
--Maintains large clearances between hull and structure
Advantage of Pneumatic Rubber Fender Yokohama
Advantages during inclined berthing
During berthing, the initial contact with the dock is usually at an oblique angle and that places a lot of pressure on both surfaces (the dock and the ship).
For typical solid rubber fenders, at inclined compression which is usually the case, energy absorption decreases considerably. Therefore, it is not unusual to see solid fenders used are larger in sizes. On the other hand, pneumatic fenders’ energy absorption maintains at a relatively high level despite inclined compression. Due to a more evenly distribution of load pressure, the torque performance against the dock is usually smaller when compared to conventionally designed solid fender systems.
Stronger against shearing force
After making contact with the dock, the vessel is usually slowly moved to the optimum mooring position. This action exerts high shearing force and compression on the surface of fenders. Most solid fenders are severely damaged due to such forces as they are not designed to withstand strong shearing forces and friction that way. However, it depends on the designs/types of solid fenders. For example, MAX frontal pads for solid fenders are designed to tackle this issue and protect the fenders from shearing forces, in which the surface of fenders do not make contact with the ship.
Relatively safe even during excess load
Generally speaking, all fenders should be used within the impact load limit. However in real life situations, it is common to see that fenders often accidentally receive excess loads. When that happens, the fortunate thing about a pneumatic fender is that the reaction force does not increase sharply under excessive load. In contrast, solid fenders’ reaction forces tend to spike sharply under excessive load conditions and damage the ship during the mooring process. This is also helped by pneumatic type fenders’ characteristic that enables a more uniform distribution of stress.
Advantages during crucial weather conditions
During crucial weather conditions when the wave action is severe, mooring processes are further complicated due to up and down unbalanced action at the quay. This exerts a higher shearing force on the fenders and the frequently change in forces during mooring under such weather conditions will cause fatigue on typical solid type fenders. However on the other hand, pneumatic fender’s flexible contact area and large allowable deflection characteristics minimise fatigue during such situations. In fact, for seas with rough situations or frequent bad weather conditions, pneumatic types may be a better option than solid type fenders as it may display a longer life span.
Deterioration in performance minimised
Aging and fatigue often cause fenders to deteriorate in terms of performance. However, due to its air filled body and highly elastic material, such issues are minimised. Solid rubber fenders or foam fenders depend more on the hardness of the material and such dependance may result in decrease in energy absorption performance after years of usage and temperature change. On the other hand, as long as basic maintenance and air pressure control is maintained, pneumatic fenders remain optimum performance even at extremely low temperature down to -50 Degree Celsius or even during high fluctuations.
Pneumatic fenders are primarily floating-types, which means the fenders float on the water in an unrestricted vertical plane corresponding to the tidal range and ship’s vertical movement. Therefore, fender energy absorption always take place at the most optimum position.
Simple installation and low maintenance cost
Pneumatic fenders can be installed simply by means of ropes or chains at minimal extra cost. Transfer or removal is also really flexible and easy for such floating type fenders. Maintenance for pneumatic type fenders include annual checks on internal air pressure, physical condition of the chain net and fender surface. Usually chain nets have a life span of about 3 to 4 years, depending on usage.
Maintenance of pneumatic rubber fender/Yokohama pneumatic fender
1. Pneumatic pressure control in±5% of the rated pressure
2. Test pressure normally, add pressure in a timely manner
3. Avoid contact with sharp objects
4.When Long time not need, should wash to dry, filled with right amount of compressed air, placed in a cool
dry ventilated place.
5.Storage place away from heat, acid and alkali, oil and grease
6.When store floating fender, shall not be folded and piled up
Certificate of pneumatic fender
Packing and delivery of Yokohama pneumatic fender
Qingdao Florescence Marine Supply Co., Ltd specializes in manufacturing pneumatic rubber fenders, foam fenders, various ship dock rubber fenders,and ship launching & salvage rubber airbags.The factory was established in 1992, designed, manufactured, and tested productsby per ISO 9001:2015 requirements. And every unit is approved by ship surveyors ,such as CCS, BV, RS, ABS, LR, etc.We are the supplier of many Navy, such as Bangladesh Navy, France Navy, Greece Navy, Thailand Navy, Italy Navy, Philippines Navy, etc.