Sovcomflot provides detailed characteristics of LNG tanker Christophe de Margerie (photo)
Sovcomflot has provided detailed characteristics of the icebreaking LNG tanker Christophe de Margerie. The naming ceremony for the Arc7 ship was held on 3 June 2017 in the presence of Russian President Vladimir Putin at port Bronka (Saint-Petersburg) in the framework the St. Petersburg International Economic Forum.
Christophe de Margerie is the first vessel in a series of 15 gas carriers planned for the Yamal LNG project. In terms of specifications, the vessel has no parallels in the world today. She was assigned an ice class Arc7, the highest ice class amongst existing merchant vessels. The gas carrier is capable of sailing independently through ice up to 2.1 metres thick.
The total power of the vessel’s main diesel engines is 64.35 MW. The power of her propulsion system is 45 MW, which is comparable to the capacity of a modern nuclear-powered icebreaker. The tanker is equipped with Azipod thrusters. Christophe de Margerie became the world’s first vessel with a high ice-class to have three Azipod units installed.
The powerful thrusters, in combination with other special equipment and mechanisms, ice-breaking bow and a special bridge design, provide a high ice-breaking capability and manoeuvrability, allowing the vessel to move continuously bow forward in ice up to 1.5 metres thick, and the use of the stern-first motion (Double Acting Tanker, DAT function) principle, which is required to overcome hummocks and heavy ice fields in high latitudes.
The turning circle of the vessel which is 299 metres long, in 1.7 metres thick ice, is 1,760 metres - which exceeds the design specification by almost twice.
Christophe de Margerie can sail along the Northern Sea Route westward from Sabetta all-the-year round and eastward for six months of the year (from July to December). Previously, the summer navigation window on the Northern Sea Route was limited to only four months with ice-breaker support.
In just one voyage, the vessel can carry 172,600 m3 of LNG.
The tanker was designed in accordance with the requirements of the Polar Code and is notable for her high energy efficiency and complies with high environmental standards. Along with traditional fuels, the vessel’s propulsion system can use LNG boil-off. Compared with conventional heavy fuel, the use of LNG can significantly reduce the emissions of harmful gases into the atmosphere: sulphur oxides (SOx) reduced by 90%; nitrogen oxides (NOx) reduced by 80% and carbon dioxide (CO2) emissions down by 15%. Such performances are particularly important for a vessel operating in the Arctic environment, which is highly sensitive to external factors.
The crew of the ship numbers 29, all of whom are Russian seafarers and 13 of which are officers. On top of the significant Arctic shipping experience each officer has, he or she has undergone extensive training at Sovcomflot’s own training centre in St. Petersburg.
The high ice-passing and exceptional manoeuvring qualities of the new tanker were fully confirmed by her ice trials, which took place from 19 February to 8 March 2017 in the Kara and Laptev Seas, and by her successful maiden call at the gas terminal at Sabetta Port on 28 March 2017.
The tanker’s successful maiden call at Sabetta Port, in terms of winter navigation, was the result of the diligent joint work of Sovcomflot, NOVATEK and Yamal LNG, which took about ten years. A project of such scale and complexity demanded an in-depth development of all the details, with the involvement of the leading scientific research and project organisations both from Russia (Arctic and Antarctic Research Institute, Krylov State Research Centre) and internationally (Aker Arctic Research Centre, Hamburg Ship Model Basin).
The marine transport component of the Yamal LNG project drew upon the successful operational experience of Sovcomflot’s vessels serving the existing large-scale oil and gas projects in the Barents and Pechora Seas (the Varandey and Prirazlomnoe projects, respectively), and the experimental transit voyages in the waters of the Northern Sea Route, which were carried out by Sovcomflot jointly with NOVATEK and other oil and gas companies from 2010 with the support of the RF Ministry of Transportation and Atomflot. These voyages demonstrated the technical possibility and economic viability of using high-latitude routes as a transport corridor for heavy-tonnage tankers. The success of this voyage opened a new deep-sea route, which passes north of the Novosibirsk Islands.
Photo release from the naming ceremony for the Christophe de Margerie tanker >>>>
