Seabreeze class
Victoria Mathias and Friedrich Ernestine
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The Seabreeze class is a class ( series ) of installation vessels for the construction of wind turbines in offshore wind farms . The class was developed and built on behalf of the German energy supply company RWE Innogy and the RWE subsidiary Offshore Logistics Company (OLC) together with Wärtsilä Ship Design and IMS. So far (as of 2013) two ships of the class have been built, namely the Friedrich Ernestine and the Victoria Mathias .
technology
The Seabreeze ships are equipped for their work with four hydraulically operated jack-up legs, each 78 m in length. This allows the ships to be set up in a water depth of up to 45 m with a wave height of 2.5 m. An additional foot extension can be mounted on each leg for a secure stand.
The ships have their own propulsion system for driving to the scene of operations and for maneuvering, so they are not lifting platforms / islands . The drive is diesel-electric . Propulsion takes place via six swiveling thrusters with a nominal output of 1.6 megawatts each, each driven by an ABB electric motor. This enables the ships to travel at speeds of up to 7.5 knots . The drive enables GPS- supported dynamic positioning down to the centimeter .
Electricity is generated by five generator sets , each with 2,600 kVA apparent power and a generator set with 1,974 kVA apparent power (together 14,974 kVA). An emergency generator with 438 kVA was also installed.
With a size of around 120 × 40 meters and 11,730 GT, the ships of the Seabreeze class are among the large installation ships. Thanks to the spacious working deck and the high maximum payload of 4,500 tons (15 t / m² deck area), the ships are the first in the world to be able to carry up to four complete wind turbines of the multi-megawatt class (including foundations, tower, nacelle and Wings) to the installation site and set up there.
The heavy - main crane reaches a working height of 110 m above the deck and so can the usual hub heights in the offshore area of approximately 90-100 m cope. The maximum lifting capacity is 1,000 t with a radius of 25 m, correspondingly less with a higher radius.
For the transport of personnel and small items to and from the Seabreeze ships, they have a helideck with a diameter of 17 m, suitable for normal-sized transport helicopters (type Agusta 139 or similar). The quarters on board offer living space for up to 60 people (crew plus WKA assembly personnel).
Construction, transport and installation of the lifting legs
The construction took place at the shipyard "Daewoo Shipbuilding & Marine Engineering" in South Korea. The transport from the shipyard to the Lloyd Werft Bremerhaven halfway around the world took place on the special ships Eagle and Falcon of the Oslo shipping company "Offshore Heavy Transport AS". These are 200 m long and 42 m wide lowerable heavylift carriers that can transport around 32,000 t on deck. A heavy-duty slab made of 1.40 m thick concrete was erected at Lloyd Werft to install the approximately 80-meter-long jack-up legs. The two mobile cranes with around 100 m high jibs stood on this plate in order to thread the 650 t heavy legs. The jack-up legs ensure a safe stand on the sea floor when the 1000-tonne crane is required to operate. Remaining work was also carried out in Bremerhaven, the hydraulic jack-up system was installed and the hydro hammer for the anchor piles was installed on board.
Class ships
The two ships of the Seabreeze class were commissioned by RWE at the end of 2009 from the South Korean shipyard Daewoo Shipbuilding & Marine Engineering (DSME) . The costs each amounted to around 100 million euros.
Both ships initially sailed under the German flag. You should from that in five years Buxtehude -based shipping company NSB Niederelbe bereedert be.
| Building name | IMO no. | construction | Whereabouts | ||
|---|---|---|---|---|---|
| Construction yard | Launch | baptism | |||
| Victoria Mathias | 9578244 | Daewoo, South Korea / Lloyd-Werft Bremerhaven, Germany |
March 17, 2011 | May 21, 2012 in Bremerhaven | January 2015 sold to MPI Offshore, as MPI Enterprise in motion |
| Friedrich Ernestine | 9578256 | April 2011 | September 16, 2011 in South Korea | as Torben in motion | |
Victoria Mathias
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The first of the identical sister ships was built under construction number 3303. The keel was laid on January 26th, the launch on March 5th, 2011. The completion of the not yet fully equipped ship took place on December 15, 2011. After completion of the shell with deck crane and lifting legs and the first technical tests, the ship was transferred to Germany, where the final construction and equipment was carried out in the Lloyd shipyard in Bremerhaven .
On May 21, 2012 the ship was christened Victoria Mathias at the shipyard in Bremerhaven in the presence of Fritz Vahrenholt (outgoing CEO RWE Innogy) and Peter Terium (designated and deputy CEO RWE AG) . The name was derived from the Victoria Mathias colliery , which in the 19th century supplied RWE's first power plant in Essen with hard coal and thus represented an important nucleus of the company.
Godmother was Dagmar Sikorski-Großmann, the wife of the outgoing RWE boss Jürgen Großmann and head of the Sikorski music publishers .
From May 2012 to January 2015 the Victoria Mathias was used to build the offshore wind farm " Nordsee Ost " in the German Bight . The OLC supply base in the port of Bremerhaven served as the base port .
In January 2015 the ship was sold to the Dutch company MPI Offshore (subsidiary of the Vroon ship owner group) and renamed MPI Enterprise . MPI Offshore operates the ship under the Dutch flag.
Friedrich Ernestine
The second ship of the class was built at Daewoo under hull number 3304. The keel was laid on April 9th, the launch on May 5th, 2011. The ship was completed on December 21, 2011. While still at the shipyard in Korea, the ship was christened Friedrich Ernestine on September 16, 2011, more than half a year before its older sister . This name is also derived from a coal mine that played an important role for RWE in the early days of the company, the Friedrich Ernestine colliery . The godmother was Maria Müller-Vahrenholt, the wife of Fritz Vahrenholt .
Initially, the Friedrich Ernestine was used to build the " Gwynt y Môr " wind farm in the Irish Sea off the Welsh coast. At the end of 2014 the ship was chartered for use in Asia. The ship was renamed Torben and came under the Liberian flag.
Web links
- Report in RWE magazine Das Magazin : Full speed ahead: New ship for the Nordsee Ost offshore wind farm ( Memento from November 4, 2013 in the Internet Archive )
- FAZ June 2013: Construction site at sea (the operators are running out of time)
literature
- Offshore installation ship ceremoniously christened . In: Hansa , Heft 6/2012, p. 65, Schiffahrts-Verlag Hansa, Hamburg 2012, ISSN 0017-7504
- Hochhaus, K.-H .: Lloyd Werft's offshore projects . In: HANSA International Maritime Journal, issue No. 6/2014 151st volume, Schiffahrts-Verlag Hansa, Hamburg 2012, ISSN 0017-7504
Individual evidence
- ↑ a b c d e f g h i Seabreeze installation device - technical data. (PDF; 1.2 MB) RWE OLC, accessed on May 22, 2012 .
- ↑ a b c offshore installation vessel. RWE Innogy, accessed on May 29, 2012 .
- ↑ a b c d RWE Innogy names offshore installation ship “Victoria Mathias”. Press release. RWE Innogy , May 21, 2012, accessed on May 22, 2012 .
- ↑ a b The giants are coming. Press service Bremen, February 21, 2012, accessed on May 29, 2012 .
- ↑ NSB manages RWE installation ships. THB - Deutsche Schiffahrts-Zeitung , January 6, 2011, archived from the original on January 12, 2011 ; Retrieved May 31, 2012 .
- ↑ a b First RWE-owned offshore installation ship launched. Press release. RWE Innogy , March 17, 2011, accessed on May 22, 2012 .
- ↑ a b RWE Innogy names the first offshore installation ship "Friedrich Ernestine". Press release. RWE Innogy , September 16, 2011, accessed on May 22, 2012 .
- ↑ Shipyard makes ships run. Nordsee-Zeitung (online edition), April 27, 2012, accessed on May 29, 2012 .
- ↑ Daughters of the German Economy (10): Dagmar Sikorski - New Tones from Hamburg. Financial Times Deutschland Online, October 29, 2007, archived from the original on May 23, 2010 ; Retrieved May 22, 2012 .
- ^ The offshore base in Bremerhaven. RWE Innogy, accessed on May 29, 2012 .
- ↑ RWE sells »Victoria Mathias« to MPI Offshore ( Memento of the original from January 8, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. , Hansa , January 6, 2015
- ↑ Lee Hong Liang: ZPMC Profundo to charter offshore construction vessel from OLC , Seatrade Maritime News, December 4, 2014. Accessed September 10, 2015.
