Crane vessel

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.

History

Enlarge picture
USS Kearsarge as Crane Ship No. 1
In medieval Europe, crane vessels which could be flexibly deployed in the whole port basin were introduced as early as the 14th century.[1] In 1920, the 1898-built battle ship USS Kearsarge (BB-5) was converted to a crane ship when a crane with a capacity of 250 tons was installed. Later it was renamed Crane Ship No. 1. It was used, amongst other things, to place guns and other heavy items on battle ships under construction. Another remarkable feat was the raising of the USS Squalus (SS-192) in 1939.

In 1949 J. Ray McDermott had the Derrick Barge Four built, a barge that was outfitted with a 150 tons revolving crane. The arrival of this type of vessel changed the direction of the offshore construction industry. Instead of constructing oil platforms in parts, jackets and decks could be built onshore as modules. For use in the shallow part of the Gulf of Mexico, the cradle of the offshore industry, these barges sufficed.

In 1963 Heerema converted a Norwegian tanker, the Sunnaas, into 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 of the North Sea.

In 1978 Heerema had two semi-submersible crane vessels built, the Hermod and the Balder, each with one 2000 ton and one 3000 ton crane. Later both were upgraded to a higher capacity. This type of crane vessel was much less sensitive to sea swell, so that it was possible to operate on the North Sea during the winter months. The high stability also allowed for heavier lifts than was possible 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 built. In 1985 the DB-102 was launched for McDermott, with two cranes with a capacity of 6000 tons each. Micoperi had the M7000 built in 1986 with two cranes of 7000 tons each.

However, in the mid 1980s the boom in the offshore industry was over, resulting in collaborations. In 1988 a joint venture between Heerema and McDermott was formed, HeereMac. In 1990 Micoperi had to apply for bankruptcy. This enabled Saipem – in the beginning of the 1970s 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, later renaming it Saipem 7000. In 1997 Heerema took over the DB-102 from McDermott after discontinuation of their joint venture.[2] The ship was renamed Thialf and, after an upgrade in 2000 to twice 7100 tons, it is now the largest crane vessel in the world even if all the world's lifting records belong to the Saipem 7000 (12150t of Sabratha Deck).

Largest crane vessels

Largest crane vessels
VesselCompanyCapacity (mT)Type
ThialfHeerema14.200[3] (2 * 7100 tons)Semi-submersible
Saipem 7000Saipem14.000 (2 * 7000 tons)Semi-submersible
HermodHeerema8.165 (1 * 4536, 1 * 3629)Semi-submersible
BalderHeerema6.350 (1 * 3629, 1 * 2722)Semi-submersible
DB 50J. Ray McDermott3.992Monohull
Derrick Barge 101J. Ray McDermott3.175Semi-submersible
DB 30J. Ray McDermott2.800Monohull
Stanislav YudinSeaway Heavy Lifting2.500Monohull
Saipem 3000Saipem2.177Monohull

References

1. ^ * Michael Matheus: "Mittelalterliche Hafenkräne," in: Uta Lindgren (ed.): Europäische Technik im Mittelalter. 800-1400, Berlin 2001 (4th ed.), p.346 ISBN 3-7861-1748-9
2. ^ J. Ray McDermott ends HeereMac joint venture
3. ^ American Bureau of Shipping Record, Thialf

External links

ship is a large watercraft capable of offshore navigation. Ships may be operated by:
  • Governments (military, rescue, research, transportation)
  • Private companies and institutions (transportation, offshore resources, research)
  • Individuals (large yachts, research).

..... Click the link for more information.
Offshore construction is the installation of structures and pipelines in a marine environment for the production and transmission of oil and gas. Construction in the offshore environment is a dangerous activity and where possible the construction is modular in nature with the
..... Click the link for more information.
semi-submersible or semisubmersible is a watercraft that can put much of its bulk underwater.

With a relatively small area above the water's surface, the semi-submersible is less affected by the waves than a normal ship, but must be trimmed continuously.
..... Click the link for more information.
A monohull is a type of boat having only one hull, unlike multihulled boats which can have two or more individual hulls connected to one another.

Uses

This is the most prevalent form of waterborne vessel. It is the most straightforward and intuitive design.
..... Click the link for more information.
19th century - 20th century - 21st century
1890s  1900s  1910s  - 1920s -  1930s  1940s  1950s
1917 1918 1919 - 1920 - 1921 1922 1923

Year 1920 (MCMXX
..... Click the link for more information.
18th century - 19th century - 20th century
1860s  1870s  1880s  - 1890s -  1900s  1910s  1920s
1895 1896 1897 - 1898 - 1899 1900 1901

:
Subjects:     Archaeology - Architecture -
..... Click the link for more information.
battleship is a large, heavily armored warship with a main battery consisting of the largest calibre of guns. Battleships are larger, better-armed and better-armored than cruisers and destroyers.
..... Click the link for more information.
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.
..... Click the link for more information.
crane is a mechanical lifting device equipped with a winder, wire ropes and sheaves that can be used both to lift and lower materials and to move them horizontally. It uses one or more simple machines to create mechanical advantage and thus move loads beyond the normal capability
..... Click the link for more information.
USS Sailfish (SS-192), a Sargo-class submarine, was originally named Squalus.

Her keel was laid on 18 October 1937 by the Portsmouth Naval Shipyard in Kittery, Maine, as Squalus
..... Click the link for more information.
19th century - 20th century - 21st century
1900s  1910s  1920s  - 1930s -  1940s  1950s  1960s
1936 1937 1938 - 1939 - 1940 1941 1942

Year 1939 (MCMXXXIX
..... Click the link for more information.
19th century - 20th century - 21st century
1910s  1920s  1930s  - 1940s -  1950s  1960s  1970s
1946 1947 1948 - 1949 - 1950 1951 1952

Year 1949 (MCMXLIX
..... Click the link for more information.
Offshore construction is the installation of structures and pipelines in a marine environment for the production and transmission of oil and gas. Construction in the offshore environment is a dangerous activity and where possible the construction is modular in nature with the
..... Click the link for more information.
oil platform is a large structure used to house workers and machinery needed to drill and then produce oil and natural gas wells in the ocean. Depending on the circumstances, the platform may be attached to the ocean floor, consist of an artificial island, or be floating.
..... Click the link for more information.
The Gulf of Mexico is the ninth largest body of water in the world. It is an ocean basin largely surrounded by the North American continent and the island of Cuba. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and
..... Click the link for more information.
19th century - 20th century - 21st century
1930s  1940s  1950s  - 1960s -  1970s  1980s  1990s
1960 1961 1962 - 1963 - 1964 1965 1966

Year 1963 (MCMLXIII
..... Click the link for more information.
Motto
Royal: Alt for Norge ("Everything for Norway")
1814 Eidsvoll oath:
Enige og tro til Dovre faller
("United and faithful until the mountains of Dovre crumble")

Anthem
Ja, vi elsker

..... Click the link for more information.
The North Sea is marginal, epeiric sea of the Atlantic Ocean on the European continental shelf between Norway and Denmark in the east, Scotland and England in the west, and Germany, the Netherlands, Belgium and France in the south.
..... Click the link for more information.
19th century - 20th century - 21st century
1940s  1950s  1960s  - 1970s -  1980s  1990s  2000s
1975 1976 1977 - 1978 - 1979 1980 1981

Year 1978 (MCMLXXVIII
..... Click the link for more information.
The DCV Balder is a Deepwater Construction Vessel operated by Heerema. It was constructed in 1978 by Mitsui Engineering & Shipbuilding Co., Ltd. as Semi-Submersible Crane Vessel. In 2001 it was converted to DCV by Verolme Botlek BV.
..... Click the link for more information.
The short ton (S/T) is a unit of mass equal to 2,000 lb (exactly 907.18474 kg). In the United States it is often called simply ton without distinguishing it from the metric ton (or tonne
..... Click the link for more information.
In naval architecture, instantaneous stability is a measure of how a vessel's buoyancy is distributed. Also known as Intact Stability. Stability is measured by metacentric height.
..... Click the link for more information.
oil platform is a large structure used to house workers and machinery needed to drill and then produce oil and natural gas wells in the ocean. Depending on the circumstances, the platform may be attached to the ocean floor, consist of an artificial island, or be floating.
..... Click the link for more information.
20th century - 21st century
1950s  1960s  1970s  - 1980s -  1990s  2000s  2010s
1982 1983 1984 - 1985 - 1986 1987 1988

Year 1985 (MCMLXXXV) was a common year starting on Tuesday (link displays 1985 Gregorian calendar).
..... Click the link for more information.
19th century - 20th century - 21st century
1950s  1960s  1970s  - 1980s -  1990s  2000s  2010s
1983 1984 1985 - 1986 - 1987 1988 1989

Year 1986 (MCMLXXXVI
..... Click the link for more information.
In economics, the term boom and bust refers to the movement of an economy through economic cycles.

The Boom-Bust economic cycle

According to most economists, an economic boom is typically characterized by an increased level of economic output (GDP), a corresponding
..... Click the link for more information.
19th century - 20th century - 21st century
1950s  1960s  1970s  - 1980s -  1990s  2000s  2010s
1985 1986 1987 - 1988 - 1989 1990 1991

Year 1988 (MCMLXXXVIII
..... Click the link for more information.
A joint venture (often abbreviated JV) is an entity formed between two or more parties to undertake economic activity together. The parties agree to create a new entity by both contributing equity, and they then share in the revenues, expenses, and control of the enterprise.
..... Click the link for more information.
20th century - 21st century
1960s  1970s  1980s  - 1990s -  2000s  2010s  2020s
1987 1988 1989 - 1990 - 1991 1992 1993

Year 1990 (MCMXC) was a common year starting on Monday (link displays the 1990 Gregorian calendar).
..... Click the link for more information.
Saipem is an Italian oil and gas industry contractor. It is a subsidiary of Italian energy company Eni, which owns approximately 43% of Saipem's shares. Saipem has contracted for designing and constructing several pipelines, including during Blue Stream, Greenstream, Nord Stream
..... Click the link for more information.


This article is copied from an article on Wikipedia.org - the free encyclopedia created and edited by online user community. The text was not checked or edited by anyone on our staff. Although the vast majority of the wikipedia encyclopedia articles provide accurate and timely information please do not assume the accuracy of any particular article. This article is distributed under the terms of GNU Free Documentation License.