Balder, Holstein, and Thialf

USS Kearsarge as Crane Ship No. 1

A crane vessel is a ship that is specialized in lifting heavy loads. The largest crane vessels are often used for offshore construction. The larger vessels are often semi-submersibles, but also conventional monohulls are used. One of the differences with a sheerleg is that the cranes can rotate. Italian ship-rigged vessel Amerigo Vespucci in New York Harbor, 1976 A ship is a large, sea-going watercraft. ... Offshore construction is the installation of structures and pipelines in a marine environment for the production and transmission of oil and gas. ... A semi-submersible or semisubmersible is a watercraft that can put much of its bulk underwater. ... A Monohull is a type of boat having only one hull. ...

History

In 1920 the 1898 build battle ship USS Kearsarge (BB-5) was converted to crane ship. A crane with a capacity of 250 tons was placed. Later it was renamed Crane Ship No. 1. It was used amongst other things to place guns and other heavy lifts on battle ships under construction. Another remarkable feat was the raising of the USS Squalus (SS-192) in 1939. 1920 (MCMXX) was a leap year starting on Thursday (link will take you to calendar) // Events January January 3 - Babe Ruth is traded by the Boston Red Sox to the New York Yankees for $125,000, the largest sum ever paid for a player at that time. ... 1898 (MDCCCXCVIII) was a common year starting on Saturday (see link for calendar) of the Gregorian calendar (or a common year starting on Monday of the 12-day-slower Julian calendar). ... This article is about a battleship as a type of warship. ... USS Kearsarge (BB-5), the lead ship of her class of battleships, was the first ship of the United States Navy to be named, by act of Congress, in honor of the famous American Civil War sloop of war Kearsarge. ... A tower crane with a pivoted main boom Cranes on the Sheksna River, Cherepovets, Russia A worker telecommanding a crane from the ground A crane is a tower or derrick equipped with cables and pulleys that is used to lift and lower materials. ... USS Sailfish (SS-192), a Sargo-class submarine, was originally named Squalus. ... 1939 (MCMXXXIX) was a common year starting on Sunday (link will take you to calendar). ...

In 1949 J. Ray McDermott had the Derrick Barge Four build, a barge that was outfitted with a 150 tons revolving crane. The appearance of this type of vessel changed the offshore construction. In stead of constructing oil platforms in parts, jackets and decks can be build onshore as modules. For use in the shallow part of the Gulf of Mexico, the cradle of the offshore industry, these barges sufficed. 1949 (MCMXLIX) was a common year starting on Saturday (the link is to a full 1949 calendar). ... Offshore construction is the installation of structures and pipelines in a marine environment for the production and transmission of oil and gas. ... An oil platform is a large structure used to house workers and machinery needed to drill and then produce oil and natural gas in the ocean. ... Gulf of Mexico in 3D perspective. ...

In 1963 Heerema converted a Norwegian tanker, the Sunnaas, to a crane vessel with a capacity of 300 tons, the first one in the offshore industry that was ship shaped. It was renamed Global Adventurer. This type of crane vessel was better adapted to the harsh environment on the North sea. 1963 (MCMLXIII) was a common year starting on Tuesday (the link is to a full 1963 calendar). ... The North Sea is a sea of the Atlantic Ocean, located between the coasts of Norway and Denmark in the east, the coast of the British Isles in the west, and the German, Dutch, Belgian and French coasts in the south. ...

In 1978 Heerema had two semi-submersible crane vessels build, the Hermod and the Balder, each with one 2000 short ton and one 3000 shortton crane. Later both were upgraded to a higher capacity. This type of crane vessel was much less sensitive for sea and swell, so that it was possible to operate on the Northsea during the winter months. The high stability also allows that heavier lifts can be lifted then with a monohull. The larger capacity of the cranes reduced the installation time of a platform from a whole season to a few weeks. Inspired by this success similar vessels were build. In 1985 the DB-102 was launched for McDermott, with two cranes with a capacity of 6000 tons each. Micoperi had the M7000 build in 1986 with two cranes of 7000 ton each. 1978 (MCMLXXVIII) was a common year starting on Sunday. ... The short ton is a unit of mass equal to 907. ... In naval architecture, instantaneous stability is a measure of how a vessels buoyancy is distributed. ... An oil platform is a large structure used to house workers and machinery needed to drill and then produce oil and natural gas in the ocean. ... 1985 (MCMLXXXV) was a common year starting on Tuesday of the Gregorian calendar. ... 1986 (MCMLXXXVI) was a common year starting on Wednesday of the Gregorian calendar. ...

However, in the mid 80s the boom in the offshore is over, resulting in collaborations. In 1988 a joint venture between Heerema and McDermott is formed, HeereMac. In 1990 Micoperi has to apply for bankruptcy. This enables Saipem - in the beginning of the 70s a large heavy lift contractor, but only a small player in this field at the end of the 80s - to take over the M7000 in 1995, renaming it Saipem 7000 later. In 1997 Heerema takes over the DB-102 from McDermott after discontinuation of their joint venture.^[1] The ship is renamed Thialf and after an un upgrade in 2000 to twice 7100 tons it is the largest crane vessel in the world. Boom may refer to: Look up boom in Wiktionary, the free dictionary. ... 1988 (MCMLXXXVIII) was a leap year starting on Friday of the Gregorian calendar. ... A joint venture (often abbreviated JV) is a strategic alliance between two or more parties to undertake economic activity together. ... This article is about the year. ... 1995 (MCMXCV) was a common year starting on Sunday of the Gregorian calendar. ... 1997 (MCMXCVII) was a common year starting on Wednesday of the Gregorian calendar. ... This article is about the year 2000. ...

Largest crane vessels

A tonne (symbol t), sometimes referred to as a metric tonne, is a measurement of weight. ... Saipem 7000 is the worlds largest floating crane (2 x 7,000t). ...

References

1. ^ J. Ray McDermott ends HeereMac joint venture
2. ^ American Bureau of Shipping Record, Thialf

External links

• Heerema Marine Contractors
• J. Ray McDermott Marine Installation
• Micoperi Marine Contractors
• Saipem Offshore Construction
• Seaway Heavy Lifting