Editing Georgiy Sedov (1998 icebreaker)

{{short description|Icebreaking platform supply vessel}}

{{For|other icebreakers of the same name|Georgiy Sedov (icebreaker)}}

| Ship caption=}}

* ''Georgiy Sedov'' (2019–)<ref name="portnews_oct2019">{{cite web|url=http://portnews.ru/news/284734/|title=В зимнюю навигацию 2019-2020 гг. в Азовском море будет работать дополнительный ледокол "Георгий Седов"|language=ru|publisher=[[PortNews]]|date=4 October 2019|accessdate=28 December 2019}}</ref>

| Ship namesake=[[Georgy Sedov|Georgy Yakovlevich Sedov]]

| Ship builder=[[Kværner Masa-Yards]] [[Helsinki New Shipyard]] ([[Helsinki]], [[Finland]])<ref name="rs" />

| Ship identification=*{{IMO number|9184988}}<ref name="equasis">{{csr|register=E|id=9184988|shipname=Antarcticaborg|accessdate=2018-07-13}}</ref>

* {{MMSI|273212330}}

*[[Maritime call sign|Call sign]]: UBRT3

| Ship propulsion=*2 × [[ABB]] [[Azipod]] VI1100A (2 × 1,620 kW)

'''''Georgiy Sedov''''' ({{lang-ru|Георгий Седов}}) is an [[icebreaker|icebreaking]] [[platform supply vessel]] operated by [[Rosmorport]] in the [[Sea of Azov]].<ref name="portnews_oct2019" /> She was built by [[Kværner Masa-Yards]] in [[Helsinki]], [[Finland]], in 1998 as '''''Antarcticaborg''''' ({{lang-kk|Антарктикаборг}}) for [[Wagenborg Kazakhstan]] to be used in the [[Caspian Sea]].

''Antarcticaborg'' and her sister ship, ''[[Arcticaborg]]'', were the first full developments of the [[double acting ship]] concept and among the first icebreakers equipped with [[Azipod]] propulsion units.

The 2,043-ton ''Georgiy Sedov'' is {{convert|65.10|m|ft}} long and has a beam of {{convert|16.40|m|ft}}. Designed to operate in shallow waters with a maximum depth of {{convert|5|m|ft}}, her maximum operating draught is only {{convert|2.90|m|ft}}. Furthermore, her main dimensions were limited by the Russian inland waterways which had to be used to transport the ships to the Caspian Sea.<ref name="poac" /> The [[gross tonnage]] of ''Georgiy Sedov'' is 1,453, [[net tonnage]] 454, and [[deadweight tonnage]] 675 tons.<ref name="rs" /><ref name="motorship" /> The ship is served by a crew of 12 and has accommodation for 20.<ref name="wagenborg">[http://www.wagenborg.com/pdf/AntAntarcticaborg.pdf Antarcticaborg/AntAntarcticaborg]{{Dead link|date=September 2019 |bot=InternetArchiveBot |fix-attempted=yes }}. Wagenborg. {{retrieved | accessdate=2012-02-18}}</ref>

Built as a supply ship, ''Georgiy Sedov'' is equipped to carry a wide range of goods needed on the offshore platform. The ship has a {{convert|350|m2|sqft|abbr=on}} open aft decks for dry cargo and a cargo hold which has a hatch large enough the fit a twenty-foot container. For powderized goods such as cement and barite, ''Georgiy Sedov'' has five storage silos with a combined capacity of {{convert|51|m3|cuft|abbr=on}}. Furthermore, the ship has cargo tanks for {{convert|48|m3|cuft|abbr=on}} of liquid [[drilling mud]], {{convert|363|m3|cuft|abbr=on}} of fuel, and {{convert|278|m3|cuft|abbr=on}} of fresh water. On her way back from the platform, ''Georgiy Sedov'' was designed to carry {{convert|67|m3|cuft|abbr=on}} of sewage and wastewater.<ref name="wagenborg" /> It is also equipped for firefighting, pollution control and rescue operations, and has towing and [[Anchor handling tug supply vessel|anchor handling]] equipment.<ref name="motorship" />

''Georgiy Sedov'' was initially classified by [[Russian Maritime Register of Shipping]] (RMRS) with [[ice class]] UL, equivalent to the highest [[Finnish-Swedish ice class]], 1A Super.<ref name="rs" /><ref name="wagenborg" /> However, the actual level of ice strengthening far exceeds the requirements of the ice class notations.<ref name="poac">Arpiainen, M. et al. [http://www.akerarctic.fi/publications/pdf/Poac99XWagenborg.pdf Development of the new icebreaking supply vessel for Northern Caspian Sea] {{webarchive |url=https://web.archive.org/web/20071007134349/http://www.akerarctic.fi/publications/pdf/Poac99XWagenborg.pdf |date=October 7, 2007 }}. POAC 1999. {{retrieved | accessdate=2012-02-18}}</ref> {{asof|2019}}, her ice class is Arc5 according to the current RMRS system.<ref name="portnews_oct2019" />

''Georgiy Sedov'' has a [[diesel-electric transmission|diesel-electric]] powertrain with two [[Straight-six engine|six-cylinder]] [[Wärtsilä]] 6L26 4-stroke medium-speed diesel engines, each with a maximum continuous rating of {{convert|1950|kW|hp}}, driving [[van Kaick]] DGS generators rated 2,250 kVA at 690 V. According to the power plant principle, the main generators in the forward engine room provide electrical power for all shipboard consumers, including propulsion. For emergency and harbour use, the ship also has [[Valmet]] 612 diesel engines, rated at {{convert|130|kW|hp}}, coupled to 163 kVA alternators. ''Georgiy Sedov'' is propelled by two [[ABB]] Azipod VI1100A electric azimuth thrusters rated at 1,620&nbsp;kW each.<ref name="abb_reflist">[https://library.e.abb.com/public/98a7ddd74d7ecb3bc1257b09004c14ab/ABB%20Propulsion%20Products%20reference%20list%202013.pdf References - Propulsion Products] [[ABB]] {{retrieved|accessdate=2015-05-28}}</ref> When built, ''Georgiy Sedov'' was among the first icebreakers fitted with Azipod propulsion units that allow the ship to operate astern in heavy ice conditions with excellent maneuverability. In addition the ship has one 150&nbsp;kW [[bow thruster]] for harbour operations.<ref name="motorship">Double-acting icebreaking duo. The Motor Ship, December 1998.</ref>

''Georgiy Sedov'' is capable of breaking level ice up to {{convert|60|cm|in}} thick at {{convert|3|kn}} when moving ahead.<ref name="wagenborg" /> However, the bow is designed primarily with good seakeeping and open water characteristics in mind, and in heavy ice conditions the ship is turned around and operated stern first. In such way, her icebreaking capability increases to {{convert|1|m|ft}} of level ice. More importantly, by allowing the Azipod units to mill and crush the ice, ''Georgiy Sedov'' is able to penetrate ice ridges that are thicker than the draught of the ship and sometimes reach the seabed without having to rely on backing and ramming.<ref name="motorship" /><ref name="poac" /> Her service speed in open water is {{convert|13|kn}} and [[bollard pull]] 32 tons.<ref name="wagenborg" />

In addition to the four Azipod units installed on ''Georgiy Sedov'' and her sister ship, ABB delivered a fifth spare unit, which allowed the company to carry out a complete overhaul for all propulsors, one at a time, without having to dock the ships for extended periods.<ref>[http://www.abb.com/cawp/seitp202/b39b2cd232c1d0e8c125788b003d25a5.aspx ABB wins Azipod® service contract]. ABB, 9 May 2011. {{retrieved | accessdate=2012-02-18}}</ref>

''Arcticaborg'' and ''Antarcticaborg'' were ordered from Kværner Masa-Yards Helsinki New Shipyard in December 1997 following extensive research and model testing at the company's Arctic Technology Centre, nowadays known as [[Aker Arctic]].<ref name="motorship" /> Constructed in the covered dry dock at the same time, both ships were delivered to Wagenborg Kazakhstan BV, a subsidiary of the Dutch shipping company {{ill|Wagenborg Shipping|nl|Wagenborg (rederij)}}, within a week in October 1998 and sailed from Finland through the [[Mediterranean]] to the [[Black Sea]] and finally to the Caspian Sea through rivers [[Don River (Russia)|Don]] and [[River Volga|Volga]]. The final ice trials were conducted in the following spring.<ref name="poac" /> The ships were placed under long-term charter by [[Offshore Kazakhstan International Operating Company]] (OKIOC), a consortium which includes [[Shell plc|Shell]].<ref name="aarc" /><ref>[http://www.digitalwavepublishing.com/pubs/NWM/maritimereporter/199812/?pgno=50 Great ships of 1998 - Antarcticaborg]. Maritime Reporter, December 1998. Page 48.</ref> Although initially classified by [[Bureau Veritas]] and flying the Dutch flag, the ships were reclassified by the Russian Maritime Register of Shipping and their port of registry was changed to [[Aktau]], Kazakhstan, shortly after delivery.<ref name="poac" />

Until 2019, ''Antarcticaborg'' was laid up as her contract had concluded. Her sister ship, ''Arcticaborg'' was transferred to [[Canada]] in 2017.

In 2019, the Russian state-owned company that manages the country's port infrastructure and operate its fleet of diesel-powered icebreakers, [[Rosmorport]], acquired ''Antarcticaborg'' and renamed her ''Georgiy Sedov''. The vessel will be used for icebreaking in the [[Sea of Azov]].<ref name="portnews_oct2019" />

[[Category:Double acting ships]]

[[Category:Icebreakers of Kazakhstan]]

[[Category:Icebreakers of Russia]]