Pneumatic Fender Ship to Ship Fenders
Pneumatic Fenders Description
Pneumatic Rubber fenders have been in use for around 50 years. The development of the Pneumatic Fender has progressed through the years in conjunction with the changing shapes, designs and size of ships and ship technology. These days Pneumatic Fenders are widely used in the off-shore transfer of oil and other chemicals. For gas, bulk, car and passenger carriers and on many installations of floating structures, pontoon and off-sore platforms.

Pneumatic Fenders are constructed of three vulcanized layers each providing an important function in the construction and lifespan of the fender. The three layers are (1) the inner rubber layer (2) the cord layers of reinforcement and (3) the outer rubber layer.

The outer rubber layer has a special compound that provides extra tensile and tear strength to protect the fender from harsh weather conditions and heavy usage whilst the inner rubber layer is specifically designed to seal the air inside and to prevent any leakage much like the inner tube of a tire. The reinforcement layer has cross hatched synthetic tire cord designed to evenly distribute the stress.
 
By sandwiching the reinforcing cord layer between the inner and outer rubber layers it is protected from abrasion and degradation from outside forces. The reinforcement is specifically designed to be pressure holding and fatigue resistant.



 
Pneumatic Fenders Performance 50 kPa Pressure Fenders
The performance of Pneumatic Fenders can be modified by changing the internal operating pressure of the fender.

There are two standard internal pressure ratings 50kPa and 80kPa.

The tables over the next two pages give the relevant performance figure for each type.
 
Size
D x L
E
R
Hull Pressure
Valve
Test
Size
D x L
E
R
Hull Pressure
Valve
Test
 
kNm
kN
kPa
kPa
kPa
 
kNm
kN
kPa
kPa
kPa
0.5x1.0
6
64
132
-
200
2.0x3.5
308
875
128
-
200
0.66x1.1
8
74
126
-
200
2.5x4.0
663
1381
137
175
250
0.7x1.5
17
137
135
-
200
2.5x5.5
943
2019
148
175
250
1.0x1.5
32
182
122
-
200
3.3x4.5
1175
1884
130
175
250
1.0x2.0
45
257
132
-
200
3.3x6.5
1814
3015
146
175
250
1.2x2.0
63
297
126
-
200
3.3x10.6
3067
5257
158
175
250
1.35x2.5
102
427
130
-
200
4.5x9.0
4752
5747
146
175
250
1.5x3.0
153
579
132
-
200
4.5x12.0
6473
7984
154
175
250
1.7x3.0
191
639
128
-
200
           

 

Performance figures based on 60% deflection.

 

 
Pneumatic Fenders Performance 80 kPa Pressure Fenders
The performance of Pneumatic Fenders can be modified by changing the internal operating pressure of the fender.

There are two standard internal pressure ratings 50kPa and 80kPa.

The following table gives the  performance figure for the higher pressure fenders. The lower 50kPa fender performance data can be found on the previous page.
 
Size
D x L
E
R
Hull Pressure
Valve
Test
Size
D x L
E
R
Hull Pressure
Valve
Test
 
kNm
kN
kPa
kPa
kPa
 
kNm
kN
kPa
kPa
kPa
0.5x1.0
8
85
174
-
250
2.0x3.5
430
1150
168
-
250
0.66x1.1
11
98
166
-
250
2.5x4.0
925
1815
180
230
300
0.7x1.5
24
180
177
-
250
2.5x5.5
1317
2653
195
230
300
1.0x1.5
45
239
160
-
250
3.3x4.5
1640
2476
171
230
300
1.0x2.0
63
338
174
-
250
3.3x6.5
2532
3961
191
230
300
1.2x2.0
88
390
166
-
250
3.3x10.6
4281
6907
208
230
300
1.35x2.5
142
561
170
-
250
4.5x9.0
6633
7551
192
230
300
1.5x3.0
214
761
174
-
250
4.5x12.0
9037
10490
202
230
300
1.7x3.0
267
840
168
-
250
           


Performance figures based on 60% deflection.

 

 

 
Pneumatic Fenders Physical Properties
As standard the fender dimensions are give as diameter x length and in millimeters.

The dimensions given are for the body only part of the fender.

The weight is shown for the two standard type of fender, net less ‘Sling’ type and Chain and Tyre Net (CTN) type.

Wire Netted and Rope Netted fenders are available on request.
 
Body Diameter
(mm)
Body Length
(mm)
Weight Sling Type
50kPa (kgs)
Weight CTN Type
50kPa (kgs)
Weight Sling Type
80kPa (kgs)
Weight CTN Type
80kPa (kgs)
500
1000
32
110
32
110
660
1100
34
125
34
125
700
1500
55
150
55
150
1000
1500
98
200
98
200
1000
2000
113
220
113
220
1200
2000
156
320
156
320
1350
2500
240
350
240
350
1500
3000
290
530
290
530
1700
3000
330
580
330
580
2000
3500
465
960
465
960
2500
4000
1080
1240
1080
1240
2500
5500
1320
1850
1320
1850
3300
4500
1840
1710
1840
1710
3300
6500
2250
2570
2250
2570
3300
10600
3060
4660
3060
4660
4500
9000
-
5390
-
5390
4500
12000
-
6990
-
6990

 

 
Pneumatic Fenders Variations
CTN Type
Pneumatic Fenders are usually supplied with a protective Chain & Tyre Net (CTN) fitted around the body giving extra protection to the body of the fender. The CTN is constructed of galvanised chain and shackles covered at the joins with used truck tyres (or aircraft tyres on request) and along the length of the chain with rubber tubes. Anti-scratch matting can also be supplied inside the tyre centers for added protection if required. On smaller diameter fenders a chain net or rope net can also be supplied.

Sling Type
Pneumatic Fenders that are supplied without a factory fitted CTN are referred to as a sling type, this fender has modified end fittings allowing the fender to be lifted and installed efficiently.
 
RIB Type
If a low-maintenance options is desired the fender body can be manufactured with reinforced rubber ribs crossing the body in a grid format. This provides extra protection for the fender body but does not suffer the wear and tear of conventional CTN protection.

Fender body color
Various color’s can be achieved on the outer layer of the fender providing for berth identification or corporate branding. As standard the fenders are supplied in Black but the can be offered in Orange, Red, Grey, Cream or other colours upon request.

       
 
Pneumatic Fenders Light Weight - Performance
The performance of our light weight Pneumatic Fenders can be modified by changing the internal operating pressure of the fender.

 

There are two standard internal pressure ratings 50kPa and 80kPa. The following table gives the relevant performance figures and weight for each type.

50 kPa Pressure Fenders
80 kPa Pressure Fenders
Size
D x L
 
Internal Pressure
 
E
R
Hull Pressure
 
Weight
Test
Internal
Pressure
E
R
Hull Pressure
 
Weight
Test
kPa
kNm
kN
kPa
Kgs
kPa
kPa
kNm
kN
kPa
Kgs
kPa
0.5x1.0
50
6
64
132
20
200
80
8
85
174
25
250
0.7x1.5
50
17
137
135
40
200
80
24
180
177
45
250
1.0x1.5
50
32
182
122
60
200
80
45
239
160
65
25

Performance figures based on 60% deflection.
 

 

 
Pneumatic Fenders Light Weight - Description & Properties
Our light weight fenders are designed with convenience in mind. They are strong but portable and ideal for use with small pleasure craft, cruise ships, work boats and naval vessels. These fenders come in a range of sizes and options of black or grey rubber. Additional equipment such as rope or wire nets, mooring lines and protective covers are also available upon request.
Physical Properties
As standard the fender dimensions are give as diameter x length and are in millimetres.

The dimensions given are for the body only part of the fender.

The fenders do not have a central tensioning member and are therefore referred to as ‘Body Only’ type as opposed to ‘Sling’ type.

 

 

 
Body Diameter
Body Length
Weight Body Only type
Weight Body Only type
(mm)
(mm)
50kPa (kgs)
80kPa (kgs)
500
1000
20
25
700
1500
40
45
1000
1500
60
65

         
 
Pneumatic Fenders Hydro-Pneumatic vertical fenders
Our range of Hydro-pneumatic fenders are designed to be installed vertically making them ideal for use with submarines or vessels whose impact point is likely to be below the waterline such as Catamarans, Semi-Submersible platforms and Drilling Rigs.

The fenders are manufactured with a water tight bladder inside that has external access points for ballasting and trimming.

The bottom end of the fender is fitted with an additional ballast weight to prevent the fender from flipping.

The fenders can be installed on most Quay structures and come in a range of sizes to suit the application and a range of vessels.


 
 
Pneumatic Fenders Hydro-Pneumatic Fender Performance
Hydro-Pneumatic Fender – Performance
The performance of our light weight Pneumatic Fenders can be modified by changing the internal operating pressure of the fender.
 

There are two standard internal pressure ratings 50kPa and 80kPa. The following table gives the relevant performance figures and weight for each type.


50 kPa Pressure Fenders
(Water 60% / Deflection 40%)
80 kPa Pressure Fenders
(Water 60% / Deflection 40%)
Size
D x L
Internal Pressure
kPa
E
kNm
R
kN
Hull Pressure
kPa
Body Weight
Kgs
Test
kPa
Internal Pressure
kPa
E
kNm
R
kN
Hull Pressure
kPa
Weight
Kgs
Test
kPa
1.7x7.2
50
107 625 164 940 200
80
140 821 215 1140 250
2.0x6.0
50
123 610 163 930 200
80
161 802 214 1100 250
2.5x5.5
50
171 681 158 1300 250
80
225 895 208 1460 300
2.5x9.1
50
303 1206 170 2300 250
80
398 1584 223 2480 300
3.3x6.5
50
338 1017 152 2200 250
80
443 1336 199 2520 300
3.3x10.6 50 617 1860 170 4200 250 80 811 2443 223 4700 300
4.5x9.0
50
995 2158 170 5000 250
80
1307 2888 228 5500 300
4.5x12.0
50
1315 2906 172 7000 250
80
1728 3817 226 7600 300

Performance figures based on water ballast 60% and deflection 40%
 
Pneumatic Fenders Hydro-Pneumatic Fender Physical Properties
Hydro-Pneumatic Fender – Physical Properties
As standard the fender dimensions are give as diameter x length and are in millimeters. The dimensions given are for the body only part of the fender.
 
Body Diameter
Body Length
Weight of Body
Weight of body
(mm)
(mm)
50kPa (kgs)
80kPa (kgs)
1700
7200
940 1140
2000
6000
930 1100
2500
5500
1300
1460
2500 9100 2300 2480
3300
6500
2200
2520
3300
10600
4200
4700
4500
9000
5000
5500
4500
12000
7000
7600
 
Pneumatic Fenders Quality

We understand how important it is to design, manufacture and supply high quality and reliable fenders that can be put into service in the harshest environments with confidence.

This is why all our fenders manufactured since 2002 have been accredited and certified to the international standard ISO17357. This is not a standard that you have to ask for with us, this is something we supply as standard across our range to ensure quality in materials and reliability in service.

We employ a strict in-house quality assurance program backed up with a detailed report available to all customers along with a third party inspection of our manufacturing processes, material sourcing and finished product testing. 



  With over 10 years experience in the supply of Pneumatic Fenders for Ship-to-ship use and for ship-to-shore use it is important to us that we supply high quality products that will perform as required to back up our reputation as a leading supplier of high quality fenders.

Lower quality materials and cheaper products that are not manufactured to the highest standards can often fail at critical moments such as during the transfer of crude oil in exposed location; such an accident can lead to environmental damage as well as expensive and timely repairs or worst still health and safety considerations for personnel working in the environment.

This is why we take quality so seriously and why every single fender fully complies with the requirements of ISO17357.


 
Pneumatic Fenders Installation - Ship to Ship & Ship to Shore applications
Ship to Ship applications
After selection of the correct size fender suitable for the combined energy of the two vessels (calculations can be found here>>) the fenders should be equally spaced along the length of the smallest vessel. At each end it is recommended that a smaller secondary fender is installed to protect against rolling due to swell and wind during transfer operations. The fenders can be slung individually from mooring points along the deck or all linked together in a line fastened only at each end of the vessel. Davits can be installed along the deck to assist in mobilisation and securing of fender for use. Please see the installation diagrams below for more details. Further detail can be found in the Transfer Guide published by the International Chamber of Shipping. Mooring equipment suggestions along with a table of recommended dimensions and capacities can be found here  >>



  Ship to Shore applications
For installation in tidal locations it is recommended that the fender is mounted to the quay at the midpoint of high and low tide, this allows the fender to rise and fall on tides with the least amount of slack in the moorings. Alternatively the fenders can be slung from mooring points along the top of the quay including mooring rings, mooring bollards or specially installed brackets. If the fenders are installed on a dolphin then the mooring lines can be installed along the side walls of the dolphin moving them well clear of the berthing surface. It is important to note that the fender will significantly change shape under full compression so a sufficient flat surface clear of protrusions is required for installation. It is not recommended to install pneumatic fenders onto mono-pile structures.  Mooring equipment suggestions along with a table of recommended dimensions and capacities can be found here  >>


 
Pneumatic Fenders Installation - Vertical applications
Vertical applications


Hydro-pneumatic fenders being installed vertically should be fixed to the top of the quay structure where ever possible.

Restraint chains fixed to the collar of the fender should be installed back to the quay structure for maximum stability.

Access to the inflation and ballasting points at the top of the fender is essential for maintenance and precise internal pressures that are required for the berthing of light hulled vessels such as Submarines and Catamarans. Installation diagrams and a table of dimension can be found below.

 



 
Pneumatic Fenders Maintenance
Maintenance
For continued performance during service and longevity of life it is important that all pneumatic fenders are maintained on a regular basis. If done to the recommended schedule given at time of purchase then the cost of maintaining the fenders can be kept to a minimum. If access to the fenders location or ability to carry our regular maintenance is difficult such as offshore applications and remote installations then our ribbed fender can offer a reduced maintenance option. In the unlikely event of serious damage where a onsite repair is needed our site crew can be available for repair or maintenance. Our fenders are supplied with tools for inflation and basic repairs.