![\"Salvage](\"\/wp-content\/uploads\/replace\/de11877b7532b2f179405fe20de368b3.jpeg\" "\\"\\"")
<\/p>\nMarine salvage airbags or balloons are\u00a0used extensively to\u00a0jack up aground ship or refloat small ships and to stabilize the refloating process when larger\u00a0ships are being raised\u2014particularly in combined lifting operations.\u00a0Such salvage tubes\u00a0are different from rigid pontoons or inflatable pontoons and lift bags due to their heavy duty and versatile usages.<\/p>\n
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The pontoons are steel cylinders, sheathed with\u00a0wooden fendering. The pontoon is divided into\u00a0three watertight compartments to permit better\u00a0control of the pontoon through control of reserve\u00a0buoyancy and ballast. Free surface and surging of\u00a0the water from one end to the other are reduced.\u00a0Each compartment of the pontoon has vent, flood,\u00a0and relief valves.<\/p>\n
The steel salvage\u00a0pontoon can be employed\u00a0in both deep and shallow water, as well as in the\u00a0presence or absence of tide. Salvage pontoons are not always the easiest salvage tool to use.\u00a0They are heavy; an 80-ton lift capacity pontoon may weigh\u00a0as much as 40 tons\u00a0that are difficult to handle on the surface.<\/p>\n
![\"Salvage](\"\/wp-content\/uploads\/replace\/0a7c9a7f0960a8b6f8cdc40d59a66252.jpeg\" "\\"\\"")
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However, the advantage of the steel salvage\u00a0pontoon in most salvage operations is that it can absorb a great deal of\u00a0mistreatment, contact, and minor damage that would seriously damage\u00a0or destroy inflatable lift bags.<\/p>\n
The parachute-type lift bag is available in a variety of sizes for\u00a0salvage.\u00a0Obtainable sizes give lifts from 5 to 35 tons. Parachute bags\u00a0are rubberized fabric bags that have lifting straps bonded to them. The enclosed-type lift bag is similar to the parachute-type except that\u00a0the bag is totally enclosed and fitted with a relief valve. Bags with\u00a0buoyant lifts from 5 to 35 tons are available.<\/p>\n
Lift bags are not as rugged, nor as salvor-proof, as other compressed\u00a0air lifting devices. Inflatable pontoons and lift bags must be handled\u00a0carefully to avoid snags, tears, and punctures.\u00a0And enclosed-type lift bags distort easily under tow which is desperate in some conditions.<\/p>\n
The salvage tubes are similar\u00a0to enclosed-type lift bags while they are much stronger. They have evolved from ship launching airbags and have multi-plies reinforcement layers made of rubber and synthetic-tire-cords. The thickness of tube body exceeds 6 mm often. Salvage balloons are extensively used for jack up stranded vessel and lifting sunk ship.<\/p>\n
![\"Salvage](\"\/wp-content\/uploads\/replace\/bc01df73cd18169004fef3798a7ddc69.jpeg\" "\\"\\"")
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Advantages<\/p>\n
Rubber buoyancy airbags are made of natural rubber, butyl rubber and synthetic-tire-cord by en lacing multiple layers to achieve heavy duty and air tightness.<\/p>\n
<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n For operation convenience, rubber buckles on buoyancy airbag body can be deployed for webbing slings or ropes reeving. Also there are customized sling nets for each size buoyancy bags which make airbag installation job easier and safer.<\/p>\n Regular sizes<\/p>\n Other sizes of buoyancy airbags are available upon request. All buoyancy airbags have more than 3 time safety coefficient according to ISO 14409:2011 demands.<\/p>\n Jacking up function is the peerless character of our salvage airbags. When the mechanical lifts are not available or limited, salvage airbags are the most powerful tool to salvage stranded vessels. Above illustrations show what air bags can be used for jacking up ships.<\/p>\n To install air bags underneath vessel, people will only need 0.25 m\u00d72.5 m\u00d7L m space. Where L is the length of air bags.<\/p>\n People may dig the channel to install deflated air bags or set up the support blocks with steel plate on top to create jack up base for marine air bags. One piece airbag with 1.5 m diameter and 15 m length can lift 250-450 tonnes load at 0.5 m height underwater.<\/p>\n When stranded ship is lifted by marine air bags, its bottom should be checked or repaired to ensure re-launch safety. Air bags roll out need a relatively flat ramp which can be completed by dredging or stacking sand sacks on gravel.<\/p>\n CAUTION<\/p>\n Salvage air bags should be keep safe from sharp solid objects such as steel bar, rock edges.<\/p>\n Salvage tubes can be rigged together to offer bigger buoyancy but the imbalance force should be prevented. Experienced salvors will inflate\u00a0air bags two end at same time or inflate two air bags in one bundle at two reverse ends.<\/p>\n Salvage tubes can be rigged into totally enclosed flooded spaces such as holds to dewater and restore buoyancy. Also they can be secured to the sunken ship by ropes or rope nets.<\/p>\n To avoid excessive ascent rates, the lift should be\u00a0the minimum required for the job. Excessive ascent\u00a0rates produce forces that distort the bags and induce instability.<\/p>\n Deeply sunken ships raised with salvage tubes\u00a0in one step accelerate as\u00a0they rise and trim, despite the best efforts of salvors to balance the\u00a0lift. Lack of control in such a raising often leads to damage to the\u00a0ship or balloons.<\/p>\n Deep lifts are best made in stages. The sunken ship is lifted part of\u00a0the way to the surface, moved to a beaching ground, beached, and\u00a0rerigged. The process is repeated until a stable lift can be made in\u00a0relatively shallow water. To lift in stages, salvage tubes are rigged at two\u00a0different levels. The balloons near the sunken ship are the main lifting balloons; those at a\u00a0shallower depth are the control balloons. The total\u00a0lift of all balloons is slightly greater than the\u00a0weight to be lifted. The total lift of the main lifting\u00a0balloons is less than the weight to be lifted. As the\u00a0ship rises, the control balloons break the surface\u00a0first.\u00a0With the control\u00a0balloons on the surface, the total buoyancy of the\u00a0control and main lifting balloons is equal to the\u00a0weight being lifted. The sunken ship is supported at\u00a0an intermediate depth and may then be towed to the\u00a0beaching ground, beached, or hauled to dry land\u00a0by airbags and winches.<\/p>\n <\/p><\/blockquote>\n![\"Salvage](\"\/wp-content\/uploads\/replace\/9f7969db169b650e6eb3e113db833ba0.jpeg\" "\\"\\"")
<\/a>\u00a0![\"Salvage](\"\/wp-content\/uploads\/replace\/feae903c9143e22bf071c1fa9a5c9e30.jpeg\" "\\"\\"")
<\/a><\/p>\nCapacity of marine salvage air bags and available sizes<\/strong><\/em><\/h4>\n
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\nThe working pressure is decided by reinforcement layers of buoyancy bags. Customized working pressure of marine salvage air bags is available.<\/p>\n<\/p>\nOperational Notes:<\/em><\/h2>\n
Relaunch aground ship<\/strong><\/em><\/h4>\n
<\/p>\nAir lift operation<\/strong><\/em><\/h4>\n
Reviews from customer<\/h3>\n
EVERGREEN HAS A 10+ YEARS BUSINESS RELATIONSHIP WITH RESOLVE MARINE. WE ARE EXPECTING ANOTHER TEN YEARS.<\/h3>\n
KEVIN IZQUIERDO | PURCHASING MANAGER<\/h3>\n
RESOLVE MARINE GROUP, INC<\/h3>\n","protected":false},"excerpt":{"rendered":"
Withstand use in harsh environments<\/h5>\n
Can lift from ground and underwater lifting<\/h5>\n
Buoyancy compensation for shallow water<\/h5>\n","protected":false},"featured_media":2913,"template":"","meta":[],"product_cat":[166,53],"product_tag":[145,144],"class_list":["post-2790","product","type-product","status-publish","has-post-thumbnail","product_cat-airbags","product_cat-salvage-airbags","product_tag-buoyancy-airbags","product_tag-salvage-airbags","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/en.qingdaoyongtai.com\/index.php?rest_route=\/wp\/v2\/product\/2790","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/en.qingdaoyongtai.com\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/en.qingdaoyongtai.com\/index.php?rest_route=\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/en.qingdaoyongtai.com\/index.php?rest_route=\/wp\/v2\/media\/2913"}],"wp:attachment":[{"href":"https:\/\/en.qingdaoyongtai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2790"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/en.qingdaoyongtai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=2790"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/en.qingdaoyongtai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=2790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}