Boat Rubber Pneumatic Yokohama Type Marine Fenders

Marine Fender Advantages

  1. Safety and Reliability

Marine fender is made of several strong cord layers to enable it to be pressure-resistant and puncture-resistant.

  1. 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.

  1. 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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