Pipes float application of Evergreen marine airbags

Evergreen marine airbags are the versatile marine tools for marine engineering applications. Marine airbags can be used for ship launching and landing, heavy transportation and refloatation.
Recently, a ferry port engineering project employed Evergreen marine airbags for the drain pipes transportation by sea. People filled pipes with inflated marine airbags and then launch pipes into the sea by riding rolling airbags. After that tugs pulled floating pipes to the destination. This effective method saves people most money and time.

splashy ship launching

Intercoastal Iron Works, a shipyard along the US Gulf of Mexico splashy launched a 72 x32-foot push boat. It is a very interesting ship launching project that employed solid rollers for launching which act as logs in heavy transportation. If Evergreen marine airbags had been used to launch this vessel, the launch will be very smooth and much safer. Marine airbags are flexible and can adjust the working heights according to the pressures so marine airbags can protect the vessel while being launched. Also the friction between marine airbags and vessel can slow down the movement of vessel thus no big splash will happen.

Marine airbags may help Nan'ao No 1 yield her secrets

Archeologists on Thursday began to retrieve and clean relics from a second cabin of the sunken merchant vessel in South China's Guangdong province.
More than 2,000 items had already been recovered from another cabin, including porcelain plates, mugs, vases, plates, bowls and other small dishes, as well as metal pots and weapons.
As the ship slowly yields her secrets, on Wednesday some blue porcelain plates bearing people's images were brought to the surface for the first time.
Other new relics that surfaced on Wednesday included some items made of color-glazed porcelain, which is more valuable than blue and white porcelain.
Tin ware, iron shotguns and canons were also retrieved.
This indicates Chinese people had begun to use iron shotguns and canons since the Ming Dynasty (1368-1644), And the new relics, many with patterned Chinese characters on them, suggests that the vessel may have been sailing to Japan, South Korea or other Southeast Asian countries.
These countries were deeply influenced by the ancient Chinese Han culture and had established close trade relations with China when the ship sank.
It is believed women were on board the ship after some women's metal finger rings were brought to the surface. The people on board may have escaped when the boat sank off the cost some 400 years ago.According to archeologists, the ship is believed to have had five to six cabins, carrying more than 10,000 objects.
Nan'ao No 1, which is now 27 meters under water, sank during the Ming dynasty and was first discovered by local fishermen in 2007.
The wooden vessel, which is well preserved and remains intact, will eventually be brought to the surface and hoisted from the water, Then marine airbags maybe used for the vessel aboarding just like the famous Nanhai NO 1 salvage project. Marine airbags ship launching and landing technology is the innovative marine solution created by Chinese and widely used for various marine projects around the world.

Marine salvage & refloatation with Evergreen airbags

Evergreen marine airbags are the powerful and convenient tool for many marine salvage works.
To send a stranded ships back to water marine airbag is the most convenient tool. People can insert airbags to the buttom of vessel and then inflate them. With the pull of a tugboat or push of a bulldozer, ship can easily move into water with the roll of airbags.
A typical case from one of our customers:
http://www.resolvesalvage.com/news_item.php?id=92)

Kian Juan Dockyard

Kian Juan Dockyard in Miri, Sarawak, East Malaysia occupies 100 meters of river frontage on a 15-acre site in the Kuala Barm Industrial Estate. There is space for the fabrication of several vessels up to 80 meters and 2000 TDW at one time. In late March they had several vessels under construction including a pair of 29x9-meter tugs being built to a design by United Ship Design of Sibu. The full-bodied tugs have a double-chine design and a 4.26-meter molded depth.
Propulsions power is provided by a pair of Cummins KTA38 M2 engines producing 1200 hp each at 1800 RPM and turning nozzle-equipped 2x1.69-meter propellers through Twin Disc MG5301 gears with 5.947:1 ratios. Estimated bollard pull is 30 tons with a designed 11-knot light running speed. The 2400 hp boats are fitted with single drum towing winches with 600 meters of 48 m/m wire. Electrical power is provided by two Cummins 6BT-powered 80 Kw generator sets for each vessel.

Landing craft have evolved a long way from the ubiquitous boats that brought US Marines ashore on South Pacific islands in the closing days of World War II. These handy boats have grown dramatically in size and power over the years but they maintain the shallow draft and forward ramp that allows them to load or off-load in shallow ports with little or no pier infrastructure. Marine airbags

The shipyards of Miri and Sibu in East Malaysia have developed the landing craft to a sophisticated cargo carrier for both liquids and deck cargos. A recent example, designed by United Ship Design of Sibu, is the SK Line 11 from the Kian Juan Dockyard Sdn. Bhd of Miri, Sarawak. In spite of a length over all of 45.5 meters (149.28 feet) and a 10.9-meter (35.76 feet) the vessel has a draft of only 2.4-meters (7.87 feet). These dimension give the landing craft at huge open deck forward. Under the deck a number of tanks provide for fuel oil in 42-tonne operating tanks and 256-tonne long range or cargo tanks. Additional tankage provides for 98 tonnes of ship’s water and 364 tonnes of cargo water. Marine airbag

The boat is powered by a pair of 640 hp Cummins KTA19-M3 engines turning into Reintjes WAF364L gears with 4.481:1 gears to give the boat an eleven-knot design speed. Additional engines include a pair of Cummins 6BTA-powered 80 kW generator sets and a bow thruster engine. A three-level deckhouse set well aft includes two accommodation decks with bunks for up to 20 crewmembers. On the navigation bridge deck a davit is fitted to launch a rescue craft mounted there. Marine airbag

The SK Line 11 is one of several being built at Kian Juan Dockyard for a Malaysian customer and it will be registered in Kuching Malayasia. Recently a similar vessel was delivered from another Miri yard for a UK customer who will use it in the Falkland Islands. It seems likely that other owners around the world will find these vessels an attractive option for areas with limited dockage and infrastructure.
Marine airbag

Muji Rahayu Shipyard

Yard owner Mr. H. Darmansyah and naval architect Surjo Adji have been building and delivering successful landing craft and tugs. Now they are preparing to build a range of supply vessels for the oil industry. With build slots in shipyards around the world booked into the future it can be a challenge for owners to find a secure slot in a yard’s schedule and even more so to find such a slot in a yard with a well-proven track record. A number of owners are coming to the small city of Samarinda to take advantage of the skills that have developed there over the years.
Work is now beginning on the construction of two models of supply vessels. The first is a 36.6 by 10-meter vessel to be powered by a pair of Cummins KTA38-M2 engines each generating 1200 HP. Turning through Twin Disc gears, the engines will swing 48-inch Kaplan-type props in kort nozzles. While primarily a supply vessel the boat will be fitted with a single drum winch and is expected to have a 70-ton bollard pull and a free running speed of 12 knots. This vessel is being built to Bureau Veritas class for a Malaysian owner based at Terengganu Darul Iman on the northeast coast of Peninsular Malaysia.
The second design is for a larger 45 by10.8-meter boat to be powered by a pair of Cummins QSK60 engines each delivering 2000 hp. These engines will turn 52-inch propellers in nozzles for an estimated bollard pull in excess of 80 tons. This vessel will also be fitted with a bow thruster. The owner will install his own deck winch. Marine airbag
Mr. H. Darmansyah
President
Muji Rahayu Shipyard
JL Kemangi Blok KKK No.07
Samarinda 75126
Kalimantan Timur
Indonesia

Marine airbag launching slipway

What’s Marine airbag launching slipway

Generally slipway designed for airbag launching can be described as two parts: above water part and under water part. The vessel will be built on the above water part which has the small incline angle. And the under water part has bigger angle which can give launched vessel more slide forward force and make airbags can roll out of buttom of vessel. The distance,angle and structure of under water part are very important for the success of launching and also the safty of airbags.
If possible concrete slipway is the best. For temporary vessel launching, strong enough ground is acceptable.
The design of slipway need scientific calculation and computer simulation test. And good design slipway can suit most vessel’s’ launching.