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The MVDan Lif terreturns the RFA

Sir Tristramto the United Kingdom

after she was badly damaged during

the Falklands War (1984)

Empty heavy-lift vessel in the harbour

of Valletta (Malta)

MVBlue Marlincarrying USS Cole.

Heavy-lift shipFrom Wikipedia, the free encyclopedia

A heavy-lift shipis a vessel designed to move very large loads that

cannot be handled by normal ships. They are of two types: semi-

submerging vessels capable of lifting another ship out of the water and

transporting it; and vessels that augment unloading facilities at

inadequately equipped ports.

Contents

1 History

2 Submerging types

3 References

4 External links

History

In the 1920s, the Bremen-based shipping company DDG Hansasaw

a growing demand of shipments for assembled locomotives to British

India. That led to the construction of the world's first heavy lift vessel,

SSLichtenfelswith a 120 t (118 long tons; 132 short tons)derrick.[1]After WorldWar II, DDG Hansa became the world's

largest heavy lift shipping company. In terms of lifting capacity it

reached itspeak in 1978 with refitting the Japanese built bulk carrier

MV Trifelswith two 320 t (315 long tons; 353 short tons) Stlcken

derricks. Shortly after that, in 1980, DDG went bankrupt. With that,

only the Dutch shipping companies Jumbo and BigLift Shipping (until

2001 named Mammoet Shipping) were left as heavy lift shipping

specialists.

Submerging types

Semi-submerging are more commonly known as a "flo/flo" for float-

on/float-off. These vessels have a long and low well deck between a

forward pilot house and an aft machinery space. In superficial

appearance, it is somewhat similar to a dry bulk carrier or some forms of oil tanker. Its ballast tanks can be

flooded to lower the well deck below the water's surface, allowing oil platforms, other vessels, or other floating

cargo to be moved into position for loading. The tanks are then pumped out, and the well deck rises to shoulder

the load. To balance the cargo, the various tanks can be pumped unevenly.

The flo/flo industry's largest customer base is the oil industry. They transport many oil drilling rigs (flo/flo ships

can carry the rigs from their construction site to a drilling site at roughly three to four times the speed of a self-

deploying rig). Rapid deployment of the rig to the drilling site can translate into major savings. They also

transport other outsized cargo and yachts.

http://en.wikipedia.org/wiki/File:MV_Blue_Marlin_carrying_USS_Cole.jpghttp://en.wikipedia.org/wiki/File:MV_Blue_Marlin_carrying_USS_Cole.jpghttp://en.wikipedia.org/wiki/File:MV_Blue_Marlin_carrying_USS_Cole.jpghttp://en.wikipedia.org/wiki/File:MV_Blue_Marlin_carrying_USS_Cole.jpghttp://en.wikipedia.org/wiki/File:MV_Blue_Marlin_carrying_USS_Cole.jpghttp://en.wikipedia.org/wiki/File:MV_Blue_Marlin_carrying_USS_Cole.jpghttp://en.wikipedia.org/wiki/File:MV_Blue_Marlin_carrying_USS_Cole.jpghttp://en.wikipedia.org/wiki/File:Semi-submersible_SSHL_Valetta_Malta_1a.jpghttp://en.wikipedia.org/wiki/File:Semi-submersible_SSHL_Valetta_Malta_1a.jpghttp://en.wikipedia.org/wiki/File:Semi-submersible_SSHL_Valetta_Malta_1a.jpghttp://en.wikipedia.org/wiki/File:Semi-submersible_SSHL_Valetta_Malta_1a.jpghttp://en.wikipedia.org/wiki/RFA_Sir_Tristram_(L3505)http://en.wikipedia.org/wiki/RFA_Sir_Tristram_(L3505)http://en.wikipedia.org/wiki/File:RFA_Sir_Tristram_%26_MV_Dan_Lifter_late_1982.JPGhttp://en.wikipedia.org/wiki/Oil_platformhttp://en.wikipedia.org/wiki/Afthttp://en.wikipedia.org/wiki/Jumbo_shippinghttp://en.wikipedia.org/wiki/Short_tonhttp://en.wikipedia.org/wiki/Long_tonhttp://en.wikipedia.org/wiki/Tonnehttp://en.wikipedia.org/wiki/World_War_IIhttp://en.wikipedia.org/wiki/Short_tonhttp://en.wikipedia.org/wiki/Long_tonhttp://en.wikipedia.org/wiki/Tonnehttp://en.wikipedia.org/wiki/SS_Lichtenfelshttp://en.wikipedia.org/wiki/DDG_Hansahttp://en.wikipedia.org/wiki/Bremenhttp://en.wikipedia.org/wiki/Shiphttp://en.wikipedia.org/wiki/USS_Cole_(DDG-67)http://en.wikipedia.org/wiki/MV_Blue_Marlinhttp://en.wikipedia.org/wiki/File:MV_Blue_Marlin_carrying_USS_Cole.jpghttp://en.wikipedia.org/wiki/Maltahttp://en.wikipedia.org/wiki/Vallettahttp://en.wikipedia.org/wiki/File:Semi-submersible_SSHL_Valetta_Malta_1a.jpghttp://en.wikipedia.org/wiki/Falklands_Warhttp://en.wikipedia.org/wiki/RFA_Sir_Tristram_(L3505)http://en.wikipedia.org/wiki/File:RFA_Sir_Tristram_%26_MV_Dan_Lifter_late_1982.JPG

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MVMighty Servant 2carries

USS Samuel B. Robertsfrom Dubai

to Newport, R.I., in 1988.

The U.S.Navy has used such ships to bring two damaged warships back to the United States for repair. The

first was the guided missile frigate USS Samuel B. Roberts, which was nearly sunk by a naval mine in the

central Persian Gulf on 14 April 1988. The frigate was towed to Dubai, then floated home to Newport, Rhode

Island, aboardMighty Servant 2.[2]

Eleven years later, MVBlue Marlintransported the U.S. guided missile destroyer USS Colefrom Aden,

Yemen toPascagoula, Mississippi, after the warship was damaged in a bombing attack on 12 October 2000.

The U.S.Navy has also chartered other heavy lift ships to carry smaller craft, usually mine-countermeasure

craft, or other patrol craft. Since there are no US-flagged heavy

lift/flo/flo ships, the U.S. Navy normally relies on its Military Sealift

Commandto charter them from the world commercial market.

In 2004,Blue Marlincarried the world's largest semi-submersible oil

platform, BP's Thunder Horse PDQ, from the Daewoo Shipbuilding

& MarineEngineering (DMSE) shipyard in South Korea to Kiewit

Offshore Services in Ingleside, Texas.[3]

Many of the larger ships of this class are owned by the company

Dockwise, includingMighty Servant 1, MVBlue Marlin, and

MVBlackMarlin. In 2004, Dockwise increased the deck width of

Blue Marlin, to make it the then largest heavy transport carrier in the

world until it was superseded by the launch of the Dockwise

Vanguardin 2012. One of the company's vessels,Mighty Servant 2,

capsized after hitting an uncharted underwater obstacle off Indonesia

in November 1999.

References

1. ^"Lichtenfels" (http://www.ddghansa-shipsphotos.de/lichtenfels200.htm). DDG Hansa:. Retrieved 23 May

2010.

2. ^"No Higher Honor: USS Roberts Aboard Mighty Servant II" (http://www.navybook.com/nohigherhonor/pic-

servant.shtml).Navybook. 2010. Retrieved 23 May 2010.

3. ^"Projects: Thunder Horse PDQ" (http://www.dockwise.com/page/projects/projectdata.html). Dockwise.

2010. Retrieved 23 May 2010.

External links

Description of military heavy lift ships (http://www.globalsecurity.org/military/systems/ship/heavy-lift.htm)

Retrieved from "http://en.wikipedia.org/w/index.php?title=Heavy-lift_ship&oldid=605880817"

Categories: Heavy lift ships Ship types

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