Allseas
| Allseas Group SA
|
|
|---|---|
 |
|
| legal form | SA |
| founding | 1985 |
| Seat |
Châtel-Saint-Denis , Switzerland
|
| Number of employees | approx. 2500 |
| Branch | Pipelines, offshore services |
| Website | allseas.com |
Allseas is a Swiss company that is active in the laying of offshore pipelines and the installation and dismantling of offshore structures. The company is based in Châtel-Saint-Denis , Canton of Friborg .
history
After the death of Pieter Schelte Heerema , the founder of Heerema Marine Contractors, in 1981, he left his company to his five sons Edward, Ruurd, Pieter, Hugo and Erik. A long legal battle between the brothers followed, after which Edward Heerema founded Allseas as Subsea Engineering in January 1985 . The company was later renamed Allseas Engineering .
Natalie Bolten was bought back in July 1985 and was to become the first pipe-laying ship with a system for dynamic positioning . The ship was named Lorelay in April 1986 and carried out the first projects in the North Sea . Also in 1985 work began on the construction of the Digging Donald , a machine for digging underwater trenches for laying pipelines.
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In 1998 the Solitaire , the largest and most powerful pipe laying ship in the world at the time, was put into operation. It was created through the total renovation of the bulk carrier Trentwood , which Allseas had acquired in the early 1990s.
In 2002, the renovation of Tog Mor , which began in 2001 and was acquired by Allseas in 1997, was completed. With a draft of only 2 m, the ship is able to lay pipelines in shallow waters.
The planning of the Pioneering Spirit was started back in 1987 . The plan initially envisaged the connection of two super tankers to form a huge work ship. In 1999, Excalibur Engineering was founded to demonstrate the project. In the course of the planning, the ship design and the way of working were adapted several times. The length of the ship grew to 384 m and the lifting mechanism for platforms was changed to a tilting method.
By the end of 2004, Allseas had laid over 10,000 km of pipelines and more than 2,800 km of trenches.
Ships and equipment
Allseas currently operates a fleet of eleven special ships: the work ship Pioneering Spirit , the three pipelayers Solitaire , Audacia and Lorelay , the laying barge Tog Mor and the support ship Calamity Jane , which is also used to prepare trenches for pipelines, as well as other offshore construction and support ships. The three pipelayers are all equipped with systems for dynamic positioning.
With the Solitaire , the largest and most powerful pipe laying ship in the world at that time has been owned by Allseas since the 1990s. It was supplemented by the even greater Pioneering Spirit (at that time still Pieter Schelte ). This ship was delivered in the second half of 2014. Another ship of the same type is to be built by 2020, but it should exceed the pioneering spirit in size and performance.
Well-known projects
In 2006, the Solitaire and the Saipem 7000 participated in the c project , which was then the longest underwater pipeline in the world. This pipeline connects the Ormen Lange gas fields off Norway and Sleipner in the North Sea with the Easington gas terminal in East Riding of Yorkshire in the United Kingdom . At the beginning of the 2010s, Allseas participated with Solitaire in the laying of the gas pipeline for the Nord Stream project through the Baltic Sea . Pipelayers Castoro Sei and Castoro 10 from competitor Saipem were also used for the installation . Upon completion, the pipeline took over the title of the world's longest underwater pipeline from the Langled Pipeline .
The ships Pioneering Spirit , Solitaire and Audacia have been involved in laying the Nord Stream 2 pipeline through the Baltic Sea since December 2018 . In December 2019, the company suspended work on the pipeline after receiving a threatening letter from US MPs.
Web links
Individual evidence
- ^ History of Allseas (1985-89). (No longer available online.) Allseas Group, archived from the original on December 3, 2013 ; accessed on April 5, 2014 .
- ↑ a b c History of Allseas (1995-99). (No longer available online.) Allseas Group, archived from the original on April 7, 2014 ; accessed on April 5, 2014 .
- ↑ Data sheet of Tog Mor . (No longer available online.) Allseas Group, archived from the original on December 3, 2013 ; accessed on April 11, 2014 (English).
- ↑ a b History of Pieter Schelte . (No longer available online.) Allseas Group, archived from the original ; accessed on April 11, 2014 (English).
- ^ History of Allseas (2000-04). (No longer available online.) Allseas Group, archived from the original on March 23, 2014 ; accessed on April 5, 2014 .
- ↑ Equipment. Allseas, accessed January 15, 2020 .
- ^ Allseas to build a single-lift vessel larger than Pieter Schelte. (PDF; 106 kB) Press release. Allseas, November 11, 2013, accessed December 27, 2019 .
- ↑ Project report on the Langeled pipeline. (No longer available online.) Allseas Group, archived from the original on April 13, 2014 ; accessed on April 5, 2014 .
- ^ Project report on the Nord Stream project. (No longer available online.) Allseas Group, archived from the original on April 13, 2014 ; accessed on April 5, 2014 .