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Boat Rubber Pneumatic Yokohama Type Marine Fenders
Marine Fender Advantages
- Safety and Reliability
Marine fender is made of several strong cord layers to enable it to be pressure-resistant and puncture-resistant.
- Advantages at Inclined Berthing
Compared with solid fender and foam fender, the marine fender is easier to distribute the load along the ship body or berthing structure.
- Lower Reaction Force with Excess Load
When the marine fender receives excess load suddenly, it can still perform well. The reaction force will not increase sharply compared with solid fenders as follows.
Pneumatic Rubber Fender Specifications
Pneumatic 50Kpa
| Nominal Size
diameter × length mm |
Initial internal pressure
kPa |
Guaranteed energy absorption (GEA) | Reaction force at GEA deflection
(R) |
Hull pressure (Internal pressure)
at GEA deflection (P) |
| Minimum value at deflection 60 ± 5 % kJ | Tolerance ±10 % kN | Reference value kPa | ||
| 500 × 1 000 | 50 | 6 | 64 | 132 |
| 600 × 1 000 | 50 | 8 | 74 | 126 |
| 700 × 1 500 | 50 | 17 | 137 | 135 |
| 1 000 × 1 500 | 50 | 32 | 182 | 122 |
| 1 000 × 2 000 | 50 | 45 | 257 | 132 |
| 1 200 × 2 000 | 50 | 63 | 297 | 126 |
| 1 350 × 2 500 | 50 | 102 | 427 | 130 |
| 1 500 × 3 000 | 50 | 153 | 579 | 132 |
| 1 700 × 3 000 | 50 | 191 | 639 | 128 |
| 2 000 × 3 500 | 50 | 308 | 875 | 128 |
| 2 500 × 4 000 | 50 | 663 | 1381 | 137 |
| 2 500 × 5 500 | 50 | 943 | 2019 | 148 |
| 3 300 × 4 500 | 50 | 1175 | 1884 | 130 |
| 3 300 × 6 500 | 50 | 1814 | 3015 | 146 |
| 3 300 × 10 600 | 50 | 3067 | 5257 | 158 |
| 4 500 × 9 000 | 50 | 4752 | 5747 | 146 |
| 4 500 × 12 000 | 50 | 6473 | 7984 | 154 |
Pneumatic 80Kpa
| Nominal size
diameter × length mm |
Initial internal pressure
kPa |
Guaranteed energy absorption (GEA) | Reaction force at GEA deflection
(R) |
Hull pressure (Internal pressure)
at GEA deflection (P) |
| Minimum value at deflection
60 ± 5 % kJ |
Tolerance ±10 % kN | Reference value kPa | ||
| 500 × 1 000 | 80 | 8 | 85 | 174 |
| 600 × 1 000 | 80 | 11 | 98 | 166 |
| 700 × 1 500 | 80 | 24 | 180 | 177 |
| 1 000 × 1 500 | 80 | 45 | 239 | 160 |
| 1 000 × 2 000 | 80 | 63 | 338 | 174 |
| 1 200 × 2 000 | 80 | 88 | 390 | 166 |
| 1 350 × 2 500 | 80 | 142 | 561 | 170 |
| 1 500 × 3 000 | 80 | 214 | 761 | 174 |
| 1 700 × 3 000 | 80 | 267 | 840 | 168 |
| 2 000 × 3 500 | 80 | 430 | 1150 | 168 |
| 2 500 × 4 000 | 80 | 925 | 1815 | 180 |
| 2 500 × 5 500 | 80 | 1317 | 2653 | 195 |
| 3 300 × 4 500 | 80 | 1640 | 2476 | 171 |
| 3 300 × 6 500 | 80 | 2532 | 3961 | 191 |
| 3 300 × 10 600 | 80 | 4281 | 6907 | 208 |
| 4 500 × 9 000 | 80 | 6633 | 7551 | 192 |
| 4 500 × 12 000 | 80 | 9037 | 10490 | 202 |
Marine Fender
The marine fender was developed in 1958 in Japan. The marine fenders should be manufactured according to ISO 17357. The standard defines the corresponding international standards for the materials and testing of these fenders. In most cases, marine fenders should be surrounded by a tire and chain net for additional protection.
Marine fenders are extensively used for ship-to-ship (STS) transfer operations, terminals, and for all kinds of ships, large tankers, vessels, docks, harbor wharves and ocean platforms.
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