Pneumatic Rubber Fenders

Floating pneumatic rubber fenders are known as Yokohama fenders or Yokohama-type pneumatic fenders. Floating pneumatic rubber fenders are made of the synthetic-cord-reinforced rubber sheet with compressed air inside. The insider air can enable it to float on the water and work as a shock absorbed between two ships (ship-to-ship), or between ships and berthing structures when they come alongside each other on the water. All Doowin Marine Yokohama type floating pneumatic rubber fenders are manufactured and tested fully compliant with ISO 17357

Floating pneumatic rubber fenders can be easily handled and installed with 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 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 extremely long service life.

Pneumatic fenders are available from 500 mm to 4,500 mm in diameters, and from 500 mm to 9,000 mm in length. All sizes of pneumatic rubber fenders are available as sling-type or with a heavy-duty chain & tire net.  We also supply vertical hydropneumatic fenders for submarines.

Note: The floating pneumatic rubber fenders have sometimes been colloquially referred to as “Yokohama Fenders” or “Yokohama type fenders” – ISO 17357:2002 Ships and marine technology — High-pressure floating pneumatic rubber fenders.

pneumatic-rubber-fenders
floating-yokohama-pneumatic-rubber-fenders

Pneumatic Fender Constructions

Floating pneumatic rubber fenders shall consist of an out rubber, reinforcement synthetic-tire-cord layer, and inner rubber, vulcanized firmly.

The properties requirements of outer and inner rubber material of floating pneumatic rubber fenders comply with ISO 17357:2014.

  • ISO 17357-1:2014 Ships and marine technology — Floating pneumatic rubber fenders — Part 1: High pressure
  • ISO 17357-2:2014 Ships and marine technology — Floating pneumatic rubber fenders — Part 2: Low pressure

Pneumatic Fender Applications

Pneumatic Fenders Type

Outer Rubber Layer for Better Protection

The out rubber are used to protect the cord layers and inner rubber from abrasion and other external forces. This rubber compound have sufficient tensile and tear resistance strength to withstand anticipated weather conditions and severe usage.

High Quality Synthetic-tyre-cord Layer

The reinforcement synthetic-tyre-cord layer strong enough to maintain the internal air pressure of the fender. The inner rubber layer seals the pressurized air inside the fender.

Safety Valve For Safer

Pneumatic Fenders of diameter 2500mm and larger shall be equipped with a safety valve for releasing excess internal pressure when the fenders are over-compressed accidentally. Fender which is smaller than 2500mm in diameter, can be equipped with a safety valve if required.

Chain and Tire Net Pneumatic Rubber Fenders

The outside chain and tire net provide the extra protction for the rubber fender body. It can be changed easily.

Wrapped Pneumatic Rubber Fender

The wrapped pneumatic rubber fenders are made by integral winding technique. The fender’s surface isn’t not so smooth similar with molded pneumatic fender. But its performance meet the request of ISO 17357. The price is much lower too. The wrapped pneumatic rubber fenders have sling type, chain and tire net type. We can equip the truck tire or aircraft tire on the fender’s body. 

pneumatic-rubber-fenders-in-production
yokohama-pneumatic-fenders
wrapped-pneumatic-fenders

Molded Yokohama-Type Fender

The molded pneumatic rubber fenders are made by mold different from the wrapped fenders. This production technology is similar to Yokohama Rubber. The fender’s surface is very smooth. Its performance is better with longer lifespan. Its price is higher too. The molded pneumatic rubber fenders have sling type, chain and tire net type. We can equip the truck tire or aircraft tire on the fender’s body too. 

molded-pneumatic-fenders-sling-type
molded-yokohama-fenders
Molded-YOKOHAMA-TYPE-PNEUMATIC-FENDERS

Pneumatic Rubber Fenders Specification

We make floating pneumatic rubber fenders with 50kPa (pneumatic 50) and 80kPa (pneumatic 80) initial pressure.
Our pneumatic rubber fender’s internal pressure, endurable pressure, safety-valve setting pressure are fully compliant with the requirements of ISO 17357.

sling and net type pneumatic rubber fenders

Pneumatic Fenders Item

Pneumatic Rubber Fenders Parameter

Fender Diameter

0.5 ~ 4.5m

Fender Length

1.0 ~ 9m

Initial Pressure

50kPa and 80kPa

Fender Type

Sling type, Net type, Hydro-pneumatic fender

Fender Standard

ISO 17357 : 2014

Fender Application

Ship-to-ship, ship-to-port

D x L

(mm)

P50 GEA

(kNm)

Reaction Force

(kN)

Hull Pressure

(kN/m2)

P80 GEA

(kNm)

Reaction Force

( kN)

Reaction Force

(kN/m2)

500x1000

6

64

132

8

85

174

600x1000

8

74

126

11

98

166

1000x1500

32

182

122

45

239

160

1000x2000

45

257

132

63

338

174

1200x2000

63

297

126

88

390

166

1350x2500

102

427

130

142

561

170

1500x3000

153

579

132

214

761

174

1700x3000

191

639

128

267

840

168

2000x3500

208

875

128

430

1150

168

2500x5000

663

1381

137

925

1815

180

3000x6000

943

2019

148

1317

2653

195

3300x4500

1175

1884

130

1640

2476

171

3300x6500

1814

3015

146

2532

3961

179

Qualified Floating Pneumatic Rubber Fenders

Produce and Test Full Compliant with ISO 17357, BV, CCS, ABS, LR Third Party Certificates

ISO-Certificate
ABS-Certificate-for-Pneumatic-Rubber-Fenders
LR-Certificate-for-Pneumatic-Rubber-Fenders
BV-Certificate-for-Ship-Launching-Airbags

Pneumatic Rubber Fenders Repair

We have a branch plant in Malaysia. Can provide the repair services for your pneumatic rubber fenders of neighboring countries, Yokohama fenders, like change tires, repair fender body, and end fittings.

yokohama-fenders-repair
pneumatic-rubber-fenders-repair

FAQ

ISO 17357-1:2014 specifies the material, performance, and dimensions of low-pressure floating pneumatic rubber fenders, which are intended to be used for the berthing, and mooring of a ship to another ship or berthing structure. It also specifies the minimum test and inspection procedures for floating low-pressure pneumatic rubber fenders.

ISO 17357-1:2014 does not address the methods for selecting the correct fender type or any safety hazards associated with its use.

The pneumatic fenders have sometimes been colloquially referred to as “Yokohama fenders” or “Yokohama type fenders”.  Because the Yokohama pneumatic fender was developed in 1958 by Yokohama Rubber Co.,Ltd based on their rubber technology for automotive tires and rubber aircraft fuel tanks. It is the initial maker of this type pneumatic fenders.  

Pneumatic fenders can be produced using different methods and each has its own advantages. The most common methods are molded and wrapped. Our pneumatic fenders are made by whole-wrapping technology. We donot use model to produce. But its performance reaches ISO 17357. And its cost is lower.

Our warranty period is 24 months. During this period, if there is any quality problem under the correct use and storage, we promise to change and repair them for free. 

Normally, we provide the manufacturer certificate free of charges. We also can provide the BV, LR, ABS, CCS third party certificate upon the client's request. The inspection fee is charged by day.

EXCELLENT IN PRACTISE – ISO 17357 APPROVED

Floating Pneumatic Rubber Fenders

Meet Our Clients

we work for them

We work for many shipyards, ports, and offshore companies all over the world. 

Need more information ?

Welcome you contact us to get more information. We will provide more information about floating Yokohama pneumatic rubber fender’s installation, performance curve, accessories, selection and design.  

Floating Pneumatic Rubber Fenders - Let's win together!

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Email:  sales@doowinmarine.com

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