Yokohama Type Floating Pneumatic Rubber Fender

Yokohama Type Floating Pneumatic Fender

Pneumatic fender, also called Yokohama Floating Fender, is a predominant and high-pressure buffering floating system in marine berthing & mooring application nowadays.

The utilization of the compressive elasticity of air provides completely uniform surface pressure on contact, making Yokohama Pneumatic Rubber Fenders as an ideal good shock absorber for ship-to-ship (STS) transfer operations and ship to dock (STD) operations. These fenders play a critical role in the safe operation of ship berthing and mooring for for all kinds of ships and jetties.

Pneumatic fender is strictly produced according to ISO17357-1:2014 standard and PIANC guideline in Jerryborg Marine. Any reduction of the guaranteed energy absorption (GEA) is not accepted. What’s more, all pneumatic fenders made by Jerryborg Marine enjoy 24 months warranty.

Pneumatic Fender Types

Type I: Pneumatic rubber fender with chain & tyre net protective jacket

Type II: Sling type with rubber plate, rubber tube & ropes protective jacket

Type III: Ribbed type rubber fender

Type IV: Rope net type protective jacket rubber fender

Type V: Standard type without any protective jackets

Type VI: Hydro pneumatic rubber fender

Advantage of Pneumatic Fenders

1. Higher Safety and Reliability

2. No Deterioration or Variation in Performance

3. Higher Performance at Inclined Berthing

4. Most Cost Competitive System

5. Soft Reaction Force for Ship and Jetty Structure

6. Lower Mooring Forces under Rough Weather Conditions

7. Stronger against Shearing Force

8. Adaptable to the Tide

9. Simple and Low Cost Installation

10. Low Maintenance Cost

Main Structure of Pneumatic Fender

Yokohama type pneumatic fender is mainly consited of following spare parts

1. rubber fender body

2. used vehicle tires or used aircraft tires

3. protective rubber sleeves

4. metal hardwares like anchor chains, shackles, swivels, towing rings, etc

let's see below photo to know more about the sturcture of pneumatic fenders

Pneumatic Fender Technical Parameter Table

50Kpa Pneumatic fender size and performance requirements

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)
Nominal Size diameter × length mm	Initial internal pressure kPa	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	1 381	137
2 500 × 5 500	50	943	2 019	148
3 300 × 4 500	50	1 175	1 884	130
3 300 × 6 500	50	1 814	3 015	146
3 300 × 10 600	50	3 067	5 257	158
4 500 × 9 000	50	4 752	5 747	146
4 500 × 12 000	50	6 473	7 984	154

80Kpa Pneumatic fender size and performance requirements

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)
Nominal size diameter × length mm	Initial internal pressure kPa	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	1 150	168
2 500 × 4 000	80	925	1 815	180
2 500 × 5 500	80	1 317	2 653	195
3 300 × 4 500	80	1 640	2 476	171
3 300 × 6 500	80	2 532	3 961	191
3 300 × 10 600	80	4 281	6 907	208
4 500 × 9 000	80	6 633	7 551	192
4 500 × 12 000	80	9 037	10 490	202