Knowledge (XXG)

Pohjanmaa-class corvette

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The Finnish Navy has argued that the size of the new ships is a result of combining multiple missions within a single hull. In particular, the ability to lay naval mines has been raised as one of the key features necessitating a larger vessel. Despite some similarities in external appearance to other
1005:(Commander of the Finnish Navy) noted that one of the reasons leading to the increased displacement is the additional strengthening of the hull, propulsion shaft lines and propellers required for year-round operation in the seasonally freezing Finnish territorial waters. He also pointed out that the 31: 1719: 1047:
anti-ship missiles. Furthermore, it has been speculated that the ship size has been driven by their suitability for international missions rather than domestic defence needs and that the whole concept has been derived from the
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in September 2019. In November 2021, the shipyard announced that it would need from 6 to 12 months additional time to complete the design. As of June 2022, the estimated delay has reportedly increased to 14 to 18 months.
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naval ships, the new multi-role corvettes have been tailored for the Finnish Navy's missions in the Baltic Sea and thus represent a completely new vessel concept with no reference design in service anywhere in the world.
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The construction of the lead ship began on 30 October 2023 and the keel was laid on 11 April 2024. The first-of-class ship would begin its trials in 2026, and the full construction run would be completed in 2029.
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The initial development of the new surface combatants for the Finnish Navy began with a research and planning phase in 2008 and the Squadron 2020 project was officially launched in 2015. The 647.6 million
509:, the four new surface combatants will form the backbone of the Finnish Navy from the mid-2020s onwards. They will replace seven older vessels that have been or are due to be decommissioned; the 648:
driving both propeller shafts via a common gearbox can be used to achieve speeds in excess of 26 knots (48 km/h; 30 mph). For low-speed maneuvering, the ships are fitted with two
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class is intended to operate primarily in coastal waters whereas frigates are traditionally considered as the smallest class of warships operating in the high seas as part of a so-called
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refer to the new surface combatants as multi-role corvettes, several commentators have pointed out that by displacement the 4,300-tonne (4,200-long-ton) vessels should be classified as
715:-class corvettes will be equipped with Patria's lightweight dual-tow Sonac DTS that includes both an active variable-depth sonar as well as a passive towed receiving array. 1764:"RMC:n Mikko Niini ihmettelee, miksi puolustusministeriö hyökkää niin vahvasti telakkaa vastaan – Rauman telakka sinnittelee myöhästyvien laivojen ja tappioiden kanssa" 1369: 692:
fire control directors, TactiCall integrated communications system, and a laser warning system. Before final selection, the Finnish Navy shortlisted Saab together with
579: 1676: 927:, has been used both by the Finnish and Swedish navies for previous ships and classes of ships, dating back to the 18th century with the first recorded vessel being 1812: 1297: 1442: 1417: 1039:. Several commentators have criticized the Squadron 2020 program due to the size of the new corvettes: according to critics, the ships are too large for the 1877:"HS-analyysi: Merivoimat on saamassa kaikessa hiljaisuudessa suunniteltua suurempia taistelualuksia – miksi Puolustusvoimat on puhunut asiasta vähätellen?" 962:, which is one of the largest Finnish (Finland was a part of Sweden at the time) naval victories and the largest naval battle in the Baltic Sea to date. 1588: 1541: 1201: 1698: 1464: 573: 1785: 1519: 16:
This article is about an upcoming class of surface combatants for the Finnish Navy. For the preceding single-ship class of the same name, see
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16 metres (52 ft 6 in). The maximum draught of the vessels will be 5 metres (16 ft 5 in) which corresponds to a
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exists for military vessels, the ice capacity of the corvettes will be equivalent to that ice class 1A for merchant ships.
569:). With these main dimensions, the new multi-role corvettes will be the largest Finnish surface combatants since the 1930s 1851: 976: 1030: 689: 616: 519: 362: 279: 102: 937: 809: 513: 110: 862:
Block 2 surface-to-air missiles. Each vessel will be capable of carrying a total of 32 missiles quad-packed to eight
1130:"Tällaisia ovat sotalaivat, joihin Suomi käyttää 1,3 miljardia euroa – "ei ole tarkoitus miinoittaa koko Itämerta"" 903: 734: 426: 64: 1350: 1993: 1443:"GE to Provide Rauma Marine Constructions with LM2500 Gas Turbines for Finnish Navy's New Multipurpose Corvettes" 764: 593: 500: 218: 17: 919:
One of the Finnish Navy's traditions has been to name its major combat ships after regions in Finland. The name
592:-class corvettes will feature an ice-strengthened hull and ability to operate independently in ice. Although no 526: 94: 634:
are installed on double resilient mountings within soundproof enclosures to reduce noise and vibration during
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with displacements of 250 to 300 tonnes (250 to 300 long tons). Until the planned commission of the new
992: 924: 458: 1677:"Merivoimien Pohjanmaa-korvetteihin siilolaukaistavat Evolved SeaSparrow -ilmatorjuntaohjukset (video)" 1055: 959: 813: 627: 570: 241: 1901: 1632: 558: 432: 1059: 1720:"Rauma Marine Constructions and Saab to be main contract partners for Pohjanmaa-class vessels" 1022: 984: 829: 805: 799: 423: 1202:"Pohjanmaa-luokan taistelualusten suunnittelu on loppusuoralla ja tuotanto alkaa tänä vuonna" 1085:
are traditionally considered as the smallest class of warships with displacement up to 3,000
999: 727: 697: 639: 492: 231: 1040: 1010: 554: 1948: 1589:"Merivoimien korvettitilaus varmistui - hangaarissa drone, taistelujärjestelmä Saabilta" 802: 778: 631: 620: 546: 455: 245: 30: 1161:"Miljardihankkeella vaikeuksia: Merivoimien uudet sotalaivat myöhästyvät yli vuodella" 1021:
Since the early 2000s, Finnish Navy's surface combatant fleet has consisted mainly of
1987: 685: 677: 355: 345: 306: 1876: 1370:"The new multi-role corvettes are the most suitable surface combatants for Finland" 936:, that was launched in 1760, and the last one, being the minelayer/training vessel 859: 770: 649: 506: 488: 285: 82: 1813:"Finnish Navy gears up to start construction of Pohjanmaa-class corvettes in 2023" 1230: 983:. In late September 2019, shortly after the construction contract was awarded, MP 688:
short-range 3D radars installed on a Saab Lightweight Integrated Mast (SLIM), two
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types were also the four main "archipelago frigate" types used in the 1790
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class, the largest surface combatants of the Finnish Navy remain the two
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about, among other related topics, the classification of the new ships.
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silos. In Finnish Navy service, the system will be referred to as ITO
825: 821: 668:. The integrated communication system (ICS) TactiCall is provided by 642: 615:). During normal patrol operations, the ship's twin ice-strengthened 553:-class corvettes will be 117 metres (383 ft 10 in) and the 1763: 1494:"Saab provides Finland's new Pohjanmaa corvettes with combat system" 1129: 700:
as the potential combat management system provider and integrator.
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and SD9500 lightweight over-the-side dipping sonar. In addition,
664:-class corvettes will be provided by the Swedish defence company 899: 817: 1633:"Finnish Navy to acquire new Surface-to-surface Missile system" 1564:"Patria to deliver ASW Sonars to new Pohjanmaa class corvettes" 1699:"The Navy's new vessels are projected to be completed in 2027" 1655:"Pohjanmaa-luokan korvetteihin ESSM Block 2 -ohjusjärjestelmä" 1041:
often shallow Finnish territorial waters riddled with skerries
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shipbuilding contract was awarded to the Finnish shipbuilder
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For underwater warfare, the vessels will be fitted with Saab
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Squadron 2020 The Finnish Defence Forces' strategic project
1418:"Finnische Marine entscheidet sich fĂĽr den MAN 175D-Motor" 942:, which was sold in 2016. The aforementioned 18th century 812:'s anti-ship missile family was selected over Kongsberg's 656:
Combat management system, communication system and sensors
638:(ASW) missions. When higher speeds are required, a single 1929:(in Finnish). Finnish Defence Forces. 26 September 2019 1927:"Pohjanmaa-luokan korvettien rakentaminen käynnistyy!" 1786:"Keel of the first Pohjanmaa-class corvette was laid" 1742:"Pohjanmaa-luokan suunnittelutyö tarvitsee lisäaikaa" 1270:"Maanpuolustuksen ja turvallisuuden osto-opas 2/2018" 607:(CODLAG) propulsion system with a total output of 28 1657:(in Finnish). Finnish Defense Forces. 5 October 2023 998:
In the official blog of the Finnish Defence Forces,
1237:(in Finnish). Sanoma Media Finland. 30 October 2023 1225: 1223: 881:lightweight anti-submarine torpedoes. In addition, 1879:(in Finnish). Helsingin Sanomat. 21 September 2019 1836:Alm, Mikael (2003). "Teaterkungen pĂĄ slagfältet". 1423:(in German). MAN Energy Solutions. 15 October 2020 365:radar and optronic tracking fire control directors 1611:"Merivoimien uusi pintatorjuntaohjus – Gabriel 5" 1583: 1581: 1043:as well as too attractive and large targets for 763:dual-purpose main gun will be recycled from the 1364: 1362: 1360: 1351:"Pohjanmaa-Class Multi-Role Corvettes, Finland" 1264: 1262: 1260: 1258: 1256: 1254: 1252: 794:The primary surface-to-surface armament of the 726:-class corvettes will be armed with a single 275:(CODLAG); 28 MW (38,000 hp) (total) 8: 1323: 1321: 1319: 1155: 1153: 1151: 703:The underwater sensor suite will consist of 1465:"Saab Receives Finnish Squadron 2020 Order" 923:, which is the Finnish name for the region 499:) project. Together with the existing four 1904:(in Finnish). Eduskunta. 26 September 2019 1852:"Sanokaa mitä sanotte – fregatti se on..." 1613:(in Finnish). Merivoimat. 13 December 2019 1196: 1194: 1192: 1190: 1188: 1186: 1184: 1182: 1180: 1178: 660:The combat management system (CMS) of the 1951:(in Finnish). Iltalehti. 11 December 2016 1921: 1919: 1896: 1894: 1840:(in Swedish). Lund: Historiska Media: 71. 1124: 1122: 1120: 1118: 1116: 1114: 1112: 1110: 860:RIM-162 Evolved Seasparrow Missile (ESSM) 1722:. Ministry of Defence. 19 September 2019 1488: 1486: 777:-class corvette will be fitted with two 1292: 1290: 1106: 1075: 124:1.3 billion euro (estimate for 4 ships) 1744:. Ministry of Defence. 2 November 2021 991:) submitted a written question to the 25: 885:-class corvettes will be able to lay 487:currently under construction for the 7: 1902:"Kirjallinen kysymys KK 161/2019 vp" 1331:(in Finnish). Finnish Defence Forces 855:-class corvettes will be armed with 297:26 knots (48 km/h; 30 mph) 1445:. General Electric. 14 October 2020 784:for close-in self-defence and four 374:Kongsberg SS2030 hull-mounted sonar 194:117 m (383 ft 10 in) 1838:Svenska Krig och Krigiska Svenskar 1635:. Ministry of Defence. 6 July 2018 1591:. Lentoposti.fi. 19 September 2019 1275:(in Finnish). Suomen Sotilas. 2018 14: 1679:. Lentoposti.fi. 21 February 2019 864:Mark 41 Vertical Launching System 782:remote controlled weapon stations 789:Multi Ammunition Softkill System 605:combined diesel-electric and gas 273:Combined diesel-electric and gas 202:16 m (52 ft 6 in) 75: 35:Preliminary 3D rendering of the 29: 1857:(in Finnish). 25 September 2015 1566:. EDR Magazine. 23 January 2020 1136:(in Finnish). 19 September 2019 975:While the Finnish Navy and the 483:is a series of four multi-role 210:5 m (16 ft 5 in) 707:'s SS2030 active hull-mounted 491:as part of the Squadron 2020 ( 341:combat management system (CMS) 309:(6,500 km; 4,000 mi) 186:4,300 t (4,200 long tons) 1: 1811:Tringham, Kate (2023-04-05). 1701:. Finnish Ministry of Defence 1398:(in Finnish). 17 January 2018 676:CMS, the system will include 617:controllable pitch propellers 280:controllable pitch propellers 1766:. Turun Sanomat. 1 July 2022 893:Development and construction 1544:. Naval News. 15 April 2020 1208:(in Finnish). 31 March 2023 810:Israel Aerospace Industries 623:. However, two of the four 427:surface-to-surface missiles 2025: 1093:is the next size category. 904:Rauma Marine Constructions 621:electric propulsion motors 368:Dual-tow Patria Sonac DTS 65:Rauma Marine Constructions 23:Finnish Navy warship class 15: 1999:Ships of the Finnish Navy 1522:. Vanguard. 11 April 2017 1163:. Iltalehti. 30 June 2022 846:"surface defence missile" 594:Finnish-Swedish ice class 167: 44: 28: 18:Pohjanmaa-class minelayer 851:Against aerial targets, 808:. The latest version of 791:(MASS) decoy launchers. 168:General characteristics 145:2029– (current estimate) 842:Pintatorjuntaohjus 2020 754:close-in weapon systems 739:surface-to-air missiles 541:General characteristics 436:surface-to-air missiles 431:8 x Mk41 VLS with 32 Ă— 417:Bofors 57 mm/70 SAK Mk3 2004:Ships built in Finland 1396:Tekniikka & Talous 756:, and a decoy system. 694:Lockheed Martin Canada 636:anti-submarine warfare 496: 377:Kongsberg SD9500 sonar 1372:. Ministry of Defence 1056:littoral combat ships 993:Parliament of Finland 603:class will feature a 571:coastal defence ships 960:Battle of Svensksund 872:Ilmatorjuntaohjus 20 814:Naval Strike Missile 773:. In addition, each 759:The forward-mounted 672:. Built around the 630:12V175D type diesel 525:minelayers and four 358:short-range 3D radar 1500:. 26 September 2019 1471:. 26 September 2019 977:Ministry of Defence 470:Helideck and hangar 467:Aviation facilities 433:Evolved Sea Sparrow 384:Electronic warfare 132:2023–2025 (planned) 1060:United States Navy 735:surface-to-surface 402:MASS decoy systems 332:processing systems 1304:. 15 October 2019 1235:Helsingin Sanomat 1023:fast attack craft 985:Johannes Yrttiaho 946:, alongside the 934:("Old Pohjanmaa") 806:anti-ship missile 678:Sea Giraffe 4A FF 474: 473: 346:Sea Giraffe 4A FF 2016: 1994:Corvette classes 1961: 1960: 1958: 1956: 1945: 1939: 1938: 1936: 1934: 1923: 1914: 1913: 1911: 1909: 1898: 1889: 1888: 1886: 1884: 1873: 1867: 1866: 1864: 1862: 1848: 1842: 1841: 1833: 1827: 1826: 1824: 1823: 1808: 1802: 1801: 1799: 1797: 1782: 1776: 1775: 1773: 1771: 1760: 1754: 1753: 1751: 1749: 1738: 1732: 1731: 1729: 1727: 1716: 1710: 1709: 1707: 1706: 1695: 1689: 1688: 1686: 1684: 1673: 1667: 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968: 917: 895: 867: 837: 721: 658: 632:generating sets 561:of about 4,300 543: 538: 532:missile boats. 385: 331: 257: 253: 249: 246:generating sets 225:Installed power 142:2028– (planned) 76: 74: 56:-class corvette 40: 24: 21: 12: 11: 5: 2022: 2020: 2012: 2011: 2009:Proposed ships 2006: 2001: 1996: 1986: 1985: 1982: 1981: 1976: 1969: 1968:External links 1966: 1963: 1962: 1940: 1915: 1890: 1868: 1855:Suomen Sotilas 1843: 1828: 1803: 1777: 1755: 1733: 1711: 1690: 1668: 1646: 1624: 1602: 1577: 1555: 1533: 1511: 1482: 1456: 1434: 1409: 1383: 1356: 1342: 1315: 1286: 1248: 1219: 1174: 1147: 1105: 1104: 1102: 1099: 1096: 1095: 1074: 1073: 1071: 1068: 1018: 1015: 972: 971:Classification 969: 967: 964: 916: 913: 894: 891: 779:Saab Trackfire 743:anti-submarine 720: 717: 686:Sea Giraffe 1X 657: 654: 619:are driven by 547:overall length 542: 539: 537: 534: 472: 471: 468: 464: 463: 462: 461: 456:Saab Trackfire 452: 446:Saab Torped 47 443: 438: 429: 420: 411: 407: 406: 405: 404: 398: 395: 392: 387: 381: 380: 379: 378: 375: 372: 366: 359: 356:Sea Giraffe 1X 352: 342: 333: 327: 326: 323: 319: 318: 315: 311: 310: 303: 299: 298: 295: 291: 290: 289: 288: 282: 276: 268: 264: 263: 262: 261: 238: 226: 222: 221: 216: 212: 211: 208: 204: 203: 200: 196: 195: 192: 188: 187: 184: 180: 179: 174: 170: 169: 165: 164: 161: 157: 156: 153: 149: 148: 147: 146: 143: 138: 134: 133: 130: 126: 125: 122: 118: 117: 116: 115: 108: 100: 90: 86: 85: 72: 68: 67: 62: 58: 57: 51: 47: 46: 45:Class overview 42: 41: 34: 22: 13: 10: 9: 6: 4: 3: 2: 2021: 2010: 2007: 2005: 2002: 2000: 1997: 1995: 1992: 1991: 1989: 1980: 1977: 1975: 1974:Squadron 2020 1972: 1971: 1967: 1950: 1944: 1941: 1928: 1922: 1920: 1916: 1903: 1897: 1895: 1891: 1878: 1872: 1869: 1856: 1853: 1847: 1844: 1839: 1832: 1829: 1818: 1814: 1807: 1804: 1791: 1787: 1781: 1778: 1765: 1759: 1756: 1743: 1737: 1734: 1721: 1715: 1712: 1700: 1694: 1691: 1678: 1672: 1669: 1656: 1650: 1647: 1634: 1628: 1625: 1612: 1606: 1603: 1590: 1584: 1582: 1578: 1565: 1559: 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771:missile boats 769: 767: 762: 757: 755: 751: 747: 744: 740: 736: 732: 729: 725: 718: 716: 714: 710: 706: 701: 699: 695: 691: 687: 683: 679: 675: 671: 667: 663: 655: 653: 651: 650:bow thrusters 647: 644: 641: 637: 633: 629: 626: 622: 618: 614: 611:(38,000  610: 606: 602: 597: 595: 591: 587: 583: 582: 577: 576: 572: 568: 564: 560: 556: 552: 548: 540: 535: 533: 531: 529: 524: 522: 517: 516: 512: 508: 507:missile boats 505: 503: 498: 494: 490: 486: 482: 480: 469: 466: 465: 460: 457: 453: 450: 447: 444: 442: 439: 437: 434: 430: 428: 425: 421: 418: 414: 413: 412: 409: 408: 403: 399: 396: 393: 390: 389: 388: 383: 382: 376: 373: 371: 367: 364: 360: 357: 353: 350: 347: 343: 340: 336: 335: 334: 329: 328: 324: 321: 320: 316: 313: 312: 308: 304: 301: 300: 296: 293: 292: 287: 286:bow thrusters 283: 281: 277: 274: 271: 270: 269: 266: 265: 247: 243: 239: 237: 233: 229: 228: 227: 224: 223: 220: 217: 214: 213: 209: 206: 205: 201: 198: 197: 193: 190: 189: 185: 182: 181: 178: 175: 172: 171: 166: 162: 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Index

Pohjanmaa-class minelayer

Rauma Marine Constructions
Finnish Navy
Rauma class
Hämeenmaa class
Pohjanmaa
Corvette
1A
GE
gas turbine
MAN
generating sets
Combined diesel-electric and gas
controllable pitch propellers
bow thrusters
nmi
9LV
Sea Giraffe 4A FF
AESA
Sea Giraffe 1X
Ceros 200
sonar
MASS decoy systems
Bofors 57 mm/70 SAK Mk3
Gabriel V
surface-to-surface missiles
Evolved Sea Sparrow
surface-to-air missiles
Naval mines

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