View source for Katanpää-class mine countermeasure vessel

{|{{Infobox ship begin}}
{{Infobox ship image
|Ship image= Katanpää Särkänsalmi 06.JPG
|Ship caption=
}}
{{Infobox ship class overview
|Name=''Katanpää''-class mine countermeasure vessel
|Builders=[[Intermarine S.p.A.]], [[Sarzana]], [[Italy]]
|Operators={{navy|Finland}}
|Class before={{sclass2|Kuha|minesweeper|1||1974}}
|Class after=
|Subclasses=
|Cost=€244.8 M for three vessels<ref name="mtv3">[http://www.mtv3.fi/uutiset/kotimaa.shtml/arkistot/kotimaa/2006/11/484751 Merivoimat tilaa miinantorjunta-aluksia Italiasta]. MTV3, 2006-11-17. {{Retrieved | accessdate=2011-03-02}}</ref>
|Built range=2007-2016
|In service range= 2012–
|In commission range= 
|Total ships building=
|Total ships planned=
|Total ships completed=3
|Total ships cancelled=
|Total ships active=
|Total ships laid up=
|Total ships lost=
|Total ships retired=
|Total ships preserved=
}}
{{Infobox ship characteristics
|Hide header=
|Header caption= 
|Ship class=
|Ship type=[[Mine countermeasure vessel]]
|Ship displacement=680 tons
|Ship length={{convert|52.45|m|ftin|abbr=on}}
|Ship beam={{convert|9.87|m|ftin|abbr=on}}
|Ship height=
|Ship draught={{convert|3.15|m|ftin|abbr=on}}
|Ship power=2 × [[MTU Friedrichshafen|MTU]] 8V-396-TE74 (2&nbsp;×&nbsp;1,000 kW)<ref name="larondine2010">[http://www.larondine.fi/index.php?option=com_content&task=view&id=846&Itemid=1&limit=1&limitstart=1 Purunpää, il finlandese di Sarzana ]. La Rondine, 29.8.2010.</ref>
|Ship propulsion=[[Diesel-electric transmission|Diesel-electric]] with two [[Voith Schneider propeller|Voith Schneider]] 18 GH/135-PP propellers<ref name="larondine2010" />
[[:en:Combimac|Combimac]] electric motors
|Ship speed={{convert|13|kn}}
|Ship range={{convert|1500|nmi|lk=in|abbr=on}}
|Ship endurance=
|Ship complement=34–38<ref name="katanpaaluovutus" />
}}
{{Infobox|child=yes
| label1 = Underwater vehicles
| data1 = [[Kongsberg Maritime]] [[HUGIN (AUV)|HUGIN 1000]] AUV<br />Hydroid [[REMUS (AUV)|REMUS 100]] AUV<br />Saab Underwater Systems [[Double Eagle (mine disposal vehicle)|Double Eagle]] Mark II ROV <br />[[Atlas Elektronik]] [[SeaFox]] I ROV
}}{{Infobox ship characteristics
| Hide header              = yes
|Ship sensors=*Atlas Elektronik integrated mine countermeasure system
*Kongsberg Maritime EM-710 RD multibeam echosounder
*Kongsberg Maritime TOPAS echosounder
*Atlas HMS-12M hull-mounted sonar
*[[Klein Associates]] Klein 5500 towed side-scanning sonar
*Kongsberg Maritime HiPAP underwater positioning system
|Ship EW=
|Ship armament=*[[Bofors 40 mm Automatic Gun L/70|Bofors 40 mm L/70]]
*[[Depth charge]]s
|Ship notes=
}}
|}

'''''Katanpää''-class mine countermeasure vessels''' are a class of three multipurpose [[mine countermeasure vessel]]s (MCMV) ordered by the [[Finnish Navy]]. The nearly 250 million euro contract was awarded to the Italian shipyard [[Intermarine S.p.A.]] in 2006. Initially, all three vessels were scheduled to be delivered by 2014 and the class was expected to achieve operational readiness by 2015, but there have been various delays and the last vessel was handed over to the Finnish Navy in November 2016.

The ''Katanpää'' class is expected to remain in service until 2040–2042.

== Development and construction ==
In its safety and defence policy report of 2004 the [[Finnish Government]] announced that, in addition to training mobile coastal troops and protecting sea traffic, the Finnish Navy would start focusing on developing its mine countermeasure capabilities. As a result a decision was made to retire the aging {{sclass2|Kuha|minesweeper|||1974}}s and invest in a new mine countermeasure fleet, which would include [[minehunter]]s and -sweepers, divers and a new mine warfare information system.<ref name="ppst2004">[http://www.defmin.fi/files/240/2493_2161_Selonteko_2004_1_.pdf Suomen turvallisuus- ja puolustuspolitiikka 2004]. Valtioneuvoston selonteko VNS 6/2004. Valtioneuvoston kanslian julkaisusarja 16/2004. {{ISBN|952-5354-58-X}}. {{Retrieved | accessdate=2011-03-03}}</ref>

A request for bids was published on 5 June 2004 and by 3 January 2005 the Finnish Navy had received offers from seven shipyards, both domestic and foreign. After an extensive evaluation it was decided to continue negotiations with Intermarine S.p.A. of Italy. [[Kockums|Kockums AB]] of Sweden and [[Navantia|Navantia SA]] from Spain. [[Aker Finnyards|Aker Finnyards Oy]] (Finland), Armaris SA (France), [[Lürssen Werft|Lürssen Werft GmbH]] and [[Abeking & Rasmussen|Abeking & Rasmussen GmbH]] (both German) were left out.<ref name="defmin2005">[http://www.defmin.fi/index.phtml?2050_m=2100&2050_o=20&s=292 Puolustusministeri Kääriäinen päätti merivoimien miinantorjunta-hankkeesta]. Puolustusministeriön tiedote 01.11.2005. {{Retrieved | accessdate=2011-03-03}}</ref> In November 2006 the contract for three mine countermeasure vessels was awarded to the Italian shipyard Intermarine S.P.A.<ref name="hs2006">[http://www.hs.fi/kotimaa/artikkeli/Merivoimat+tilaa+miinantorjunta-alukset+Italiasta/1135223053680 Merivoimat tilaa miinantorjunta-alukset Italiasta]. Helsingin Sanomat 2006-11-17. {{Retrieved | accessdate=2011-03-03}}</ref> The total order worth was 244.8 million euros<ref name="mtv3"/> and it will include a spare parts package.<ref name="ruotuvaki_172010">[http://mil.fi/ruotuvaki/?action=read_page&pid=168&aid=2723 Miinantorjunta-alus varmentaa meriyhteydet]. Ruotuväki 17/2010. {{Retrieved | accessdate=2011-03-03}}</ref> About 50{{nbsp}}% of the total cost is contracted for Finnish companies and the shipbuilding contract includes a 100{{nbsp}}% [[offset agreement]].<ref name="laiva">Miinantorjunta-alus Katanpää on täynnä hienoa tietotekniikkaa. Laiva 3/2012.</ref>

The construction of the first vessel began in July 2007 with the ceremony of "start of lamination" which, for vessels built of composite materials, equals to the steel cutting ceremony. The construction of the second vessel was started in March 2008 and the third vessel in February 2009. The construction of the vessels was delayed by one year after the shipyard was devastated by a flood in early 2009. Two more floods occurred in late 2009, but the damage was not as extensive.<ref name="yle2009">[http://yle.fi/uutiset/kotimaa/2010/04/suomalaisten_miinantorjuntalaiva_juuttui_tulvaan_1619357.html Suomalaisten miinantorjuntalaiva juuttui tulvaan]. YLE 25.04.2010. {{Retrieved | accessdate=2011-03-03}}</ref><ref>[https://www.ts.fi/uutiset/524968 Kolme tulvaa viivästytti miina-alusten valmistumista]. Turun Sanomat, 20 August 2013. {{retrieved|accessdate=2013-08-20}}</ref>

The lead vessel of the class, ''Katanpää'', began its sea trials in March 2011, but due to additional delays it was not delivered until 4 May 2012. The vessel was shipped to Finland onboard {{ill|BigLift Shipping|nl|lt=BigLift}} [[heavy lift vessel]] {{MS|Happy Dover||2}} which left Italy on 21 May.<ref name="katanpaaluovutus">Sotalaiva sai kansipaikan. Helsingin Sanomat, 25 May 2012.</ref> ''Katanpää'' was presented to the public in Helsinki on 9 July 2012, the 94th anniversary of the Finnish Navy. The second vessel, ''Purunpää'', was delivered to the Finnish Navy on 20 August 2013 and arrived in Turku onboard {{MS|Happy Dynamic||2}} one month later.<ref>[https://www.ts.fi/uutiset/537332 Miinalaivueen kakkosalus tuli Turkuun]. Turun Sanomat, 20 September 2013. {{retrieved|accessdate=2013-09-20}}</ref> The third vessel, initially expected by 2015,<ref>[http://www.hs.fi/kotimaa/a1424265445572 Tekniikkaongelmat riivaavat armeijaa]. Helsingin Sanomat, 19 February 2015. {{retrieved|accessdate=2015-06-14}}</ref> was handed over to the Finnish Navy in November 2016 and will arrive in Finland in December.<ref>[http://merivoimat.fi/artikkeli/-/asset_publisher/miinantorjunta-alus-vahterpaa-luovutettiin-merivoimille Miinantorjunta-alus Vahterpää luovutettiin merivoimille]. Merivoimat, 2 November 2016. {{retrieved|accessdate=2016-11-04}}</ref>

The ''Katanpää''-class mine countermeasure vessels are expected to remain in service until 2040-2042.

== Naming ==
[[File:Purunpää Merivoimien vuosipäivä 2015 06.JPG|thumb|left|''Purunpää'']]
The ''Katanpää''-class mine countermeasure vessels were initially referred to as the MCMV 2010 class<ref name="pv_powerpoint" /> after the mine countermeasure development project<ref name="defmin2005" /> and "MITO class" after the [[Finnish language|Finnish]] word for mine countermeasures, ''miinantorjunta''. As naval vessel classes of the Finnish Navy are traditionally named after the lead ship of the class, the new class of mine countermeasure vessels received its final name when the first vessel was named ''Katanpää'' ([[pennant number]] 40) on 16 June 2009.<ref name="pv_kata">Ensimmäinen miinantorjunta-alus kastettiin "Katanpääksi". Puolustusvoimien tiedote, 22.9.2009.</ref> The second vessel of the ''Katanpää'' class received its name, ''Purunpää'' (41), on 26 September 2010 and the third one was named ''Vahterpää'' (42) on 3 November 2011.<ref name="pv_puru">[http://www.puolustusvoimat.fi/portal/puolustusvoimat.fi/!ut/p/c5/xZTLjqpAFEW_xQ_opgp5DnkWFAICFgoTImgjKAKizePrm8TcQQ-67-hezxnuVK1k7eRQMTXvdf9Z5Pt7UV_3F2pHxVyCaE4wMIAigo4ATHezppGvAxDy1JbaASYJyrExp_Pkl6AHjipbwUR6W9VdWTe3en2uWi_GbXBFQxdjv4qaoUm5R8RZRa6Eezgp8z_xN5Jr2fJMWs2M1RoqCPyeA_jMuaVmaQ5iIForDDADlYgbwi8R4X597_r8Mwc_jAQox6irIxVRMf-TD7TkqM0fH3W3CegWStmozGpI4pXarKZ0cKB6g13Krnwxw6eaELfFDQ1ZbPnbqB2aHUs3ll1IhjZmXL34C5N9AZP__0zMvID5gj7xC_rEL-hT_jd9Yiou0uq9z6p38M6KPM3zAk3zjLDk2PlapRE3aDWWVM1P5Kgl2UlLh1HwH31xPbn2Q7XPOLkBWy9j-pHc6ViM4O1xdZq8y5mV2ekHsYSk1nauG-mGsm-8dTfa5fHcHzocX9ZsxfFbGx6kDdkRNhpaOhQVchy5zkhFTdgm2fChTCdTPWtu3XqVWK078oZCD7AoV31PuZtp59_ulyPUPzI8leRop-4KxfDyJsnpqTDzBdVUn43mGz0Uvm8vLRZfNt9z1w!!/dl3/d3/L2dBISEvZ0FBIS9nQSEh/?pcid=a102fe0043afe088a4e0bed333b26d39 Uusi miinantorjunta-alus kastettiin "Purunpääksi"]. Merivoimien Esikunta. {{Retrieved | accessdate=2011-03-03}}</ref><ref name="pv_vahter">[http://www.puolustusvoimat.fi/portal/puolustusvoimat.fi/!ut/p/c5/vZDJkqJAFEW_xQ8oMxmTXAqkgIwyKLAxKKEoxFRsaZD8-iaiFt29KFcVvrs8cd-JuCAHcy7F0NRF31wvxRmkIJcPBi8r5gZy2A84Ai1_Y8qSpHLaDoI9SKF4iE5TZ7GWhScWum7SwshJRtdZWy5T3Vj3WaQnLIIi55Kad5k7eTOHd8zt1luyWsf9VNeL-Vf-v8121dnmwB1yAk4z4HMOuS8uC8QmniFyRqCJ0JrVOE6QYCTy074foi8Ov7kVBBnI0d8-xBjOfaQTpOtCaMgg_sE1nruk17kU8YWuF26ovHBDH_2oawPy5p0uxyNdwqUsYiwIChJ5HvOIR2CfZ_xDv1ujTsLDI-QVr0MSuXeUfB4b0pS31HPegpDomjJ0pWcj6VEIgSvc1C3tMENmJUl4Sj7NuL9t5XOmJVQ9-fK9fissWvxGvJNVki1ZV87h26G8VEKzo_2FequD8L41Q2WKft3UspiqsDXOH5JTKVk_GkPW67Ye47GwjeOGqPvmGHdl1bJYnVLnXFkL4JlXWoGODh0JTZb-k2q1WPwBusgL3Q!!/dl3/d3/L2dBISEvZ0FBIS9nQSEh/?pcid=1d4a0e8048f01af68e66ce00c6621582 Third Katanpää class named in Italy]. Merivoimien Esikunta, 4 November 2011. {{retrieved | accessdate=2011-11-05}}</ref>

The vessels have been named after historical locations, Katanpää being an old island fortress and naval port outside [[Kustavi]] in [[Western Finland]], Purunpää an old harbor site in [[Dragsfjärd]] and Vahterpää an old naval base outside [[Loviisa]] in the [[Gulf of Finland]]. The same names were also carried by three of the four [[BYMS class minesweeper]]s operated by the Finnish Navy in the 1950s. For the new class of vessels, the Finnish Navy has adopted a new prefix "MHC" which stands for "Mine Hunter Coastal".<ref name="katanpaaluovutus" />

== Technical details ==
[[File:Vahterpää Lippujuhlan päivän 2017 laivastoesittely 4.JPG|thumb|''Vahterpää'']]
The ''Katanpää''-class mine countermeasure vessels are constructed of laminated composite materials. They are {{convert|52.45|m|ft|abbr=out}} long and have a beam of {{convert|9.47|m|ft|abbr=out}} and a draft of {{convert|3.15|m|ft|abbr=out}}. The hull, decks and bulkheads are made of [[fiberglass]], which in places are up to {{convert|150|mm|in|abbr=out}} thick. The decks are additionally reinforced with [[balsa]] and [[carbon fiber]]. This improves shock resistance against underwater explosions and reduces the vessels' magnetic, noise and pressure signatures that could detonate the mines.<ref name="ruotuvaki_172010" /> The low-signature [[diesel-electric transmission|diesel-electric]] propulsion system consists of two [[MTU Friedrichshafen|MTU]] 8V-396-TE74 high-speed [[diesel engine]]s, each producing {{convert|1000|kW|hp|abbr=on}}, and two [[Voith Schneider propeller]]s. The ''Katanpää''-class vessels are designed to operate in archipelagoes, coastal regions and open seas, and are capable of operating in ice.<ref>[http://www.bairdmaritime.com/index.php?option=com_content&view=article&id=14413:new-mine-vessel-for-finnish-navy&catid=73&Itemid=65 New mine vessel for Finnish Navy]. Baird Maritime, 7 September 2013. {{retrieved|accessdate=2013-09-10}}</ref> They will have a service speed of {{convert|13|kn}} and a maximum range of {{convert|1,500|nmi}}.<ref name="pv_powerpoint">[http://www.defmin.fi/files/793/mcmv2010.ppt MCMV 2010]. Ministry of Defence. {{Retrieved | accessdate=2011-03-02}}</ref>

The ''Katanpää''-class vessels will be equipped with an extensive array of equipment to search for, locate and destroy naval mines, ranging from two [[autonomous underwater vehicle]]s (AUV) and two [[remotely operated vehicle]]s (ROV) to hull-mounted sensors. The larger AUV, HUGIN (High Precision Untethered Geosurvey and Inspection system), which is manufactured by [[Kongsberg Maritime]], is over four meters long and weighs over {{convert|800|kg|lbs|abbr=on}}. It is equipped with a multibeam [[echosounder]] (MBES), a smaller version of the one mounted on the hull of the vessel. This instrument is used to collect topographic information of the seabed and a synthetic aperture [[side-scanning sonar]] can be used to detect and classify targets. The smaller AUV, [[REMUS (AUV)|REMUS 100]] (Remote Environmental Monitoring Unit), weighs only {{convert|41|kg|lbs|abbr=on}} and can be used to collect information of the sea floor with its side-scanning sonar at depths of up to 100 metres. Two ROVs, a [[Double Eagle (mine disposal vehicle)|Double Eagle]] by Saab Underwater Systems of Sweden and [[Seafox drone|SeaFox]] I by [[Atlas Elektronik]] of Germany, can be used to identify and destroy naval mines. The hull-mounted sensors include a Kongsberg EM-710 RD multibeam echosounder and a TOPAS (Topographic Parametric Sonar) sediment echosounder with jets that can penetrate the uppermost strata of the seabed. In addition the vessels will be equipped with American-made [[Klein Associates]] Klein 5500 towed side-scanning sonars. Underwater positioning is provided with Kongsberg HiPAP 500 (High Precision Acoustic Positioning) system. The vessels follow a toolbox principle in which a suitable combination of sensors and equipment is selected individually for each mission according to the task and environmental conditions.<ref name="rp">Katanpää-luokan miinantorjuntajärjestelmällä teknistä suorituskykyä. [http://www.rannikonpuolustaja.fi/archive/409.pdf Rannikon Puolustaja 4/09].</ref>

Each vessel of the ''Katanpää'' class is equipped with a [[Bofors 40 mm Automatic Gun L/70|Bofors 40 mm L/70]] gun for self-defence.<ref name="larondine2010" /> The fire control is provided by Atlas Elektronik and the integrated system utilizes EOTS TV/IR multisensors. The system can be controlled from either one of five consoles in the [[combat information center]] or from the bridge, although only one console is equipped with the pedals required to control the gun. In addition the vessels are armed with depth charges.<ref name="pv_powerpoint" /><ref name="rp" />

== References ==
{{Reflist}}

==External links==
{{Commons category|Katanpää class mine countermeasure vessel}}
* [https://web.archive.org/web/20150227092546/http://www.intermarine.it/en/products/defence/mcmv/the-katanpa-a-class Katanpää class on builder's official website]

{{Active ships of the Finnish Navy}}

{{DEFAULTSORT:Katanpaa class mine countermeasure vessel}}
[[Category:Ships of the Finnish Navy]]
[[Category:Minesweepers of the Finnish Navy]]
[[Category:Mine warfare vessel classes]]
[[Category:Ships built in Italy]]