>>
position: > Products and Solutions > Evergreen Marine Airbags >

Ship Launching Airbags

Evergreen Marine Airbags for Ship Launching and Landing

>> Technical Research of ship launching using Evergreen Marine Airbag 
>> Marine Airbags Achievement (or visit our Press Release)

>> Welcome visit new website www.evergreenmaritime.com

Evergreen is the inventor of first ship launching marine airbags, and sets the standard in the industry for high performance and usage technology. Now, Evergreen Marine Airbags (ship launching marine airbags, Intense pneumatic tire) are widely used in ship launching and landing, sunken ships salvage and refloatation, heavy lifting and conveying. This is one great ship launching ways.

Ship launching or upgrading relying on Evergreen Marine Airbag is a innovative technology having utmost developmental prospect in shipbuilding. Ship Launching Airbags overcomes the disadvantage of fixed launching track by which the productive abilities of shipbuilding and ship repair were limited in the small and medium sized shipyards. Now it has become a Flexible Launching Technology full of mobility, having advantages in saving effort, saving time ,saving work load, saving investment, flexibility, safety, reliability, outstanding comprehensive economy benefit, flexible, safe, reliable, and outstanding benefit, etc. The launching technology of apply Evergreen Marine Airbag to the launching and landing of ships overcomes the restrictions of traditional slide board technology which is commonly used in building small or medium size ships.

After years of practice and accumulation of experience, we have developed this ship launching techniques from facilitating the launching of only 1,000 DWT ships to current 55,000 DWT ships. And now this launching technology has become into a flexible, promising, secure and mature technology. Besides that, Evergreen Marine Airbags are widely used in upgrading of ships and boats of all sizes.

Construction Features of ship launching airbags:

Ship Launching / Shipping Marine Airbags, basic body consists of which consist of our rubber layers, synthetic-cord-reinforced rubber layers, are kind of a cylindrical airbags with hemispherical heads at the both ends. All of these are vulcanized together, and then compress air inside to enable in to roll.

marine airbags

1. Outer Rubber
The outer rubber layer that covers the outside of ship launching airbag protects the cord layers from abrasion and other external forces. This compound has sufficient tensile and tear strength to withstand any weather condition and hard usage.

2. Synthetic-tyre-cord layer for reinforcement
The reinforcement cord layers of ship launching marine airbags, which are made of Synthetic-tire-cord commonly used in tires, are arranged at ideal angles to hold the internal pressure and to distribute the stress evenly providing strong efficient reinforcement.
(To know the detailed technology parameter, please refer Material Selection.)

3. End Fittings
End fittings of Ship Launching Marine Airbag include air tightness swivel and airbags safety air inlet.

Classification  of ship launching airbags:

1. The standard specification of Evergreen Airbags.
You can choose the required diameter and effective length to meet your projects.
 Diameter (D)          : It’s from 0.8m to 2.0m.
 Effective Length (EL)   : It’s from 6m to 18m.
 Total Length (TL)      : It’s from 7m to 19.5m
The above specification only is our standard specification arrange. Other specification Ship Launching Airbags also can be supplied upon clients’ request.

2. The standard number of layers
We define the number of layer, which means the number of Synthetic-tyre-cord layer, in order to confirm the Safety Working Pressure. Normally, Evergreen Airbags include 4, 5, 6, 7, 8 layers types. Other type is available upon clients’ request.

3. The material of Evergreen Marine Airbags
There’re two kinds of synthetic-tire-cord because of the different performance.

Evergreen Airbags

Unit

1400 dtex/2

1870 dtex/2

Break Strength

N/ strand

≥ 215.6

≥ 284.2

Diameter

mm

0.65 ± 0.05

0.74 ± 0,05

Adhesion Strength

N/cm

≤ 137.2

≤ 156.8

Your also can refer the follow list:
Evergreen Marine Airbags

Ship Launhing marine AirbagsWe define the suitable Evergreen Marine Airbags as per the above 3 items.
Such as: Ship launching airbags D1.5m x EL 15m YT-6, 1870D
In here:
1. D 1.5m: the diameter is 1.5m
2. EL 15m: the effective length is 15m
3. YT-6: the number of Synthetic-tire-cord layer is 6 layers
4. 1870D: the type of Synthetic-tire-cord layer is 1870

Features and Advantages  of ship launching airbags:

l        Unique whole enlacing technology
l        Excellent material selection as per ISO 17357marine airbags for ship launching
l        Cost effective, long service life
l        Guaranteed quality and safety
l        Free consult and design project
l        Laboratory and field test
l        Commission and technical directing service
l        Well proven design and performance
l        0.7 Mpa hydraulic blasting utmost
l        After service for lifetime

Performance Table  of ship launching airbags:

Performance table for YT-6 layer type ship launching marine airbags.
For more information about YT-4, YT-5, YT-7, and YT-8, please feel free to contact us.

Diameter

Working Pressure

Working Height

Guaranteed Bearing Capacity

per Unit Length

kN/m

t/m

lb/ft

D=1.0m
(D=3.28 ft)

0.20 Mpa
(29.01 psi)

0.6m (1.968 ft)

125.76

12.82

8617

0.5m (1.640 ft)

157.16

16.02

10768

0.4m (1.312 ft)

188.65

19.23

12925

0.3m (0.984 ft)

220.04

22.43

15076

0.2m (0.656 ft)

251.53

25.64

17233

D=1.2m
(D=3.94 ft)

0.17 Mpa
(24.66 psi)

0.7m (2.296 ft)

133.61

13.62

9154

0.6m (1.968 ft)

160.3

16.34

10983

0.5m (1.640 ft)

187.08

19.07

12818

0.4m (1.312 ft)

213.76

21.79

14646

D=1.5m
(D=4.92 ft)

0.13 Mpa
(18.85 psi)

0.9m (2.952 ft)

122.63

12.51

8402

0.8m (2.624 ft)

143.03

14.58

9800

0.7m (2.296 ft)

163.43

16.66

11198

0.6m (1.968 ft)

183.94

18.75

12602

0.5m (1.640 ft)

204.34

20.83

14000

0.4m (1.312 ft)

224.75

22.91

15398

D=1.8m
(D=5.90 ft)

0.11 Mpa
(15.95 psi)

1.1m (3.608 ft)

120.96

12.33

8287

1.0m (3.280 ft)

138.22

14.09

9470

0.9m (2.952 ft)

155.59

15.86

10660

0.8m (2.624 ft)

172.85

17.62

11843

0.7m (2.296 ft)

190.22

19.39

13033

0.6m (1.968 ft)

207.48

21.15

14216

0.5m (1.640 ft)

224.75

22.91

15398

0.4m (1.312 ft)

242.01

24.67

16581

D=2.0m
(D=6.5)

0.10 Mpa
(14.5 psi)

1.2 m (3.936 ft)

125.76

12.82

8617

1.1 m (3.608 ft)

141.46

12.42

8246

1.0 m (3.280 ft)

157.16

16.02

10765

0.9 m (2.952 ft)

172.85

17.62

11841

0.8 m (2.624 ft)

188.64

19.23

12923

Testing and Quality  of ship launching airbags:

Evergreen Management System is certified ISO 9001-2000 and follows each order during manufacturing procedures. Evergreen guarantees high standards and performances of all products. Customer requirements are strictly followed during all production phases. Evergreen relevant departments assure a procurement control on the raw and basic materials. All material of Ship Launching Airbags are selected in accordance with CB/T 3795-1996.

Evergreen are very focused on the quality. We invest advanced inspection equipment.  100% Evergreen Airbags should be tested and inspected as per the requirement of CB/T 3795. Non conformed products are immediately rejected by Quality Control. The widely usage have been tested under rough condition. Our many satisfied customers are out best reference.

Evergreen welcomes inspection by its customer’s quality assurance departments and to their appointed agencies as CCS, Lloyd’s, DNV, or ABS.

To understand the whole launching process, please refer our video clips, or download our ship launching videos from www.qingdaoyongtai.com/video.rar.

>> PROVEN IN PRACTICE

Please visit Technology to get more information about the design and engineering of marine airbags.

Technology Standard (Pls contact us to get)
>> CB/T 3837-1998 Technological Requirements for ship Upgrading or Launching Relying on Air-bags

      (Shipbuilding Industry Standard, PRC)

>> CB/T 3795-1996 / CB/T 3795-2009 Air bag for ship up to or down to launching way

      (Shipbuilding Industry Standard, PRC)

©2012 Qingdao Evergreen Maritime Co.,Ltd All right reserved.   鲁ICP备09008309号(www.miitbeian.gov.cn)