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Floating Pneumatic Yokohama Fenders
Floating pneumatic Yokohama fenders are made of synthetic-cord-reinforced rubber sheets with compressed air inside to enable them to float on the water and work as a shock absorber between two ships (ship-to-ship), or between ships and berthing structures when they come alongside each other on the water.
Note: The floating pneumatic rubber fenders have sometimes been colloquially referred to as “Yokohama Fenders” or “Yokohama type fenders” – ISO 17357:2014 Ships and marine technology — Floating Pneumatic Rubber Fenders
Advantages of Floating Pneumatic Yokohama Fenders
Floating pneumatic Yokohama fenders can be easily handled and installed with a guy-rope or guy-chain because of their lightweight. It can resist the shearing force and maintain energy absorption level under inclined compression up to 15 degrees. Meanwhile, provide the low and comparatively even hull pressure.
Consisted of several synthetic-cord layers and tough abrasion-resistant rubber, they have consistent performance even under rough conditions and cyclic load. The maintenance cost and damage risk are minimized too. The best material also ensures self-buoyancy and an extremely long service life.
Floating Pneumatic Yokohama Fenders Classification
Fender types:
1.Net-type Fenders: fenders that are covered by a tire chain net, each end shall be linked together with one to two ring(s).
2.Sling-type Fender: fenders that are designed to be used without a protection net.
Initial internal pressure:
1.Pneumatic fender 50 (initial internal pressure 50 KPa)
2.Pneumatic fender 80 (initial internal pressure 80 KPa)
| Ship Tonnage (DWT) | Assumed Boarding Speed (M/S) | Effective Kinetic Energy (KNM) | Fender Size D x L (m) |
| 200000 | 0.15 | 1890 | 3.3 x 6.5 |
| 150000 | 0.15 | 1417 | 3.3 x 6.5 |
| 100000 | 0.15 | 945 | 3.0 x 5.0 |
| 85000 | 0.17 | 1031 | 3.0 x 6.0 |
| 50000 | 0.18 | 680 | 2.5 x 5.5 |
| 40000 | 0.20 | 672 | 2.5 x 5.5 |
| 30000 | 0.22 | 609 | 2.5 x 4.0 |
| 20000 | 0.25 | 525 | 2.5 x 4.0 |
| 15000 | 0.26 | 425 | 2.5 x 4.0 |
| 10000 | 0.28 | 329 | 2.0 x 4.0 |
| 5000 | 0.33 | 228 | 2.0 x 3.5 |
Floating Pneumatic Yokohama Fenders Application
Floating pneumatic Yokohama fenders could be used as a protective medium for ship-to-ship operation(STS), ship-to-quay(STQ) and ship-to-berthing(STB). And suit for various vessels, like:
Tankers, Gas Carriers and Bulk Cargo Ships;
Fast ferries and aluminum hulled vessels;
Temporary of permanent installations;
Rapid response and emergency rendering;
As stand-off fenders to realign ships with shore facilities.
Contact:echo-bai@hengergroup.com
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