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((Short description|Fast attack craft class of the Finnish Navy))
((more citations needed|date=February 2013))
((Update|reason=armament change underway<ref>https://www.lentoposti.fi/uutiset/gabriel_ohjukset_saanut_ohjusvene_hanko_oli_raumalla_merivoimien_vuosip_iv_n_ykk_snyrkki</ref>|date=August 2023))

{|((Infobox ship begin))
((Infobox ship image
|Ship image=Hanko Lippujuhlan päivä 2013 1.JPG
|Ship caption=FNS ''Hanko'' (82)
))
((Infobox ship class overview
|Name=''Hamina''
|Builders=
|Operators=((navy|Finland))
|Class before=((sclass|Rauma|missile boat|4))
|Subclasses=
|Cost=
|Built range=
|In service range=   
|In commission range= 24 August 1998 - 19 June 2006
|Total ships building= 
|Total ships planned=
|Total ships completed=4
|Total ships cancelled=
|Total ships active=4
|Total ships laid up=
|Total ships lost=
|Total ships retired=
|Total ships preserved=
))
((Infobox ship characteristics
|Hide header=
|Header caption= 
|Ship type=[[Fast attack craft]]
|Ship displacement=250 tons
|Ship length=((convert|51|m|abbr=on))
|Ship beam=((convert|8.5|m|abbr=on))
|Ship height=
|Ship draught=((convert|1.7|m|abbr=on))
|Ship draft=
|Ship depth=
|Ship hold depth=
|Ship decks=
|Ship deck clearance=
|Ship ramps=
|Ship ice class=
|Ship power=
|Ship propulsion=*2 × MTU 16V 538 TB93 diesels; 5520 kW.
*2 × [[Rolls-Royce Holdings|Rolls-Royce]] [[Kamewa Waterjets|Kamewa]] 90SII waterjets
|Ship speed=Over ((convert|30|kn))
|Ship range=((convert|500|nmi|km mi|abbr=on))
|Ship endurance=
|Ship test depth=
|Ship boats=
|Ship capacity=
|Ship troops=
|Ship complement=26
|Ship crew=
|Ship time to activate=
|Ship sensors=*[[Saab Group|Saab]] [[CEROS 200 Fire Control Radar|Ceros 200]] with [[9LV]]  [[Fire-control system|FCS]]<small> (Saab)</small>
*Consilium Selesmar maritime radar
*[[TRS-3D]]/16-ES multimode acquisition [[3D radar]]<small> ([[EADS]])</small>
*ANCS 2000 Combat Management System<small> (EADS)</small>
*MSSR 2000 I [[Identification friend or foe|IFF]]<small> (EADS)</small>
*EOMS<small> ([[SAGEM]])</small>
*Simrad Subsea Toadfish [[sonar]]
*Sonac/PTA towed array sonar <small>(Finnyards)</small>
|Ship EW=* [[MASS (decoy system)|MASS]] (Multi Ammunition [[Countermeasure|Soft-kill]] System)<small> ([[Rheinmetall]])</small>
*''Decoys'': Philax chaff, IR flares
*''Smoke system'': Lacroix ATOS
*''EMS'': Matilda [[radar warning receiver]]<small> (Thales)</small>
|Ship armament=*1 × [[Bofors 57 mm L/70 naval artillery gun|Bofors 57 mm/70 SAK Mk3]]
*2 × [[12.7 mm]] machine guns<small> ([[NSV (machine gun)|NSV]])</small>
*8 × [[Umkhonto missile|Umkhonto-IR]] [[Surface-to-air missile|SAM]]<small> ([[Denel Aerospace Systems|Denel]])</small>
*4 × [[RBS-15|RBS-15 Mk2]] [[Surface-to-surface missile|SSM]]<small> ([[Saab Group|Saab]])</small>
*1 × rail for [[depth charge]]s or [[naval mine|mines]] ([[Sea Mine 2000]])
|Ship armour=
|Ship armor=
|Ship aircraft=
|Ship aircraft facilities=
|Ship notes=))
|}

The '''''Hamina''-class missile boat''' is a class of [[fast attack craft]] of the [[Finnish Navy]]. They are classified as "missile fast attack craft" or ''ohjusvene'', literally "[[missile boat]]" in Finnish.<ref>[https://archive.today/20130213084701/http://www.puolustusvoimat.fi/portal/puolustusvoimat.fi/?1dmy&urile=wcm:path:/SU+Puolustusvoimat.fi/Puolustusvoimat.fi/Merivoimat/Perustietoa/02122009kalustoetusivu/Kalustokuvasto/Haminaluokka/ Hamina-luokka] Finnish Defence Forces ((in lang|fi))</ref>
The ''Hamina'' FACs are based at [[Upinniemi]], and form the 7th Surface Warfare Squadron, part of the [[Coastal Fleet (Finland)|Finnish Coastal Fleet]], together with the minelayers [[Hämeenmaa-class minelayer|MLC ''Hämeenmaa'']], [[Pansio-class minelayer|''Porkkala'']] and [[Pansio-class minelayer|''Pyhäranta'']].

==History==
[[File:Hamina Merivoimien vuosipäivä 2014 01.JPG|thumb|left|''Hamina'' (80)]]

The vessels were built in the late 1990s, early 2000s, and are the fourth generation of Finnish missile craft. The first vessel was ordered in December 1996 and the fourth was handed over on 19 June 2006. Since the launch of the ((sclass|Helsinki|missile boat|1))s, all fast attack craft have been named after Finnish coastal cities. The class was previously known also as '''''Rauma 2000''''' following its predecessor the ((sclass|Rauma|missile boat|4)).

The four vessels form what the Finnish Navy calls ''Squadron 2000'' (((lang-fi|Laivue 2000))). Initially the Finnish Navy considered several different compositions for the new squadron, and at one point only two ''Hamina''-class vessels and four ((sclass|Tuuli|hovercraft|0)) [[hovercraft|ACV]] were to have been built. After a strategic shift of the Finnish Navy's role, the composition of the Squadron 2000 followed suit. The ''Tuuli''-class prototype was never fully equipped, nor fitted for operational use and its three sisters were cancelled, instead two more ''Hamina''-class boats have been built; with some of the equipment intended for the ''Tuuli''s being used in the ''Hamina''s. The fourth and final ''Hamina''-class vessel was delivered in summer 2006.

The squadron reached its full operational capability in 2008 and have greatly improved the surface- and air surveillance  as well as air defense capability of the Finnish Navy. Their electronic surveillance suite also increases the quality of information available to military leaders.

All ships were built at [[Rauma shipyard]] by [[Aker Finnyards]] in [[Rauma, Finland|Rauma]], [[Finland]]. The vessels have their home base at [[Upinniemi]].

In March 2014 it was announced that the ''Hamina''-class missile boats will be upgraded in the near future.<ref>[http://www.hs.fi/kotimaa/Ohjusveneiden+viimeinen+remontti/a1395041018970 Ohjusveneiden viimeinen remontti]. Helsingin Sanomat, 18 March 2014. ((retrieved|accessdate=2014-03-18))</ref>

==MLU (Mid-Life Update)==

Modernization of the four ''Hamina''-class ships began in 2018 and was completed in April 2022,<ref>((cite web |url=https://www.navalnews.com/naval-news/2022/05/finnish-navy-completes-upgrade-of-4th-and-final-hamina-class-fac/ |title=Finnish Navy completes upgrade of 4th and final Hamina-class FAC |date=6 May 2022 |archive-url=https://archive.today/20220602134649/https://www.navalnews.com/naval-news/2022/05/finnish-navy-completes-upgrade-of-4th-and-final-hamina-class-fac/ |archive-date=2022-06-02 |url-status=live))</ref> The MLU programme will enable the ''Haminas'' to continue their service into the mid 2030's.

The main gun armament is being changed from 57mm to 40mm in order to save weight. The vessels were already at maximum weight and in order to introduce torpedoes this had to be changed.

{| class="wikitable"

! colspan="2" |Weaponry

|-

!Original

!After modernization

|-

|1 × Bofors 57&nbsp;mm dual-purpose gun (transferred to [[Pohjanmaa-class corvette|''Pohjanmaa'' class]])

|1 × [[Bofors 40 Mk4]] multi purpose gun

|-

|2 × 12,7mm machine guns

|1 × [[Saab Trackfire]] remote weapon station with a 12,7mm machine gun,

2 × 12,7mm machine guns

|-

|''none''

|Initially [[Torped 45]], later [[Torped 47]]

|-

|[[RBS15 SFIII]] anti-ship missile

|[[Gabriel (missile)|Gabriel Mk.5]] anti-ship missile

|-

|Atlas ANCS 2000 combat system

|Saab 9LV combat management system

|-

|''none''

|Kongsberg ST2400 towed sonar (from Rauma class)

|-

|Saab Ceros 200 radar and optronic tracking fire control director

|updated Saab Ceros 200 radar and optronic tracking fire control director

|-

|TRS-3D phased array C-band radar

|updated TRS-3D phased array C-band radar

|}

<ref>((Cite web|url=http://www.reservilainen.fi/uutiset/merivoimat_jalleen_torpedoaikaan_hamina-luokan_ohjusveneet_peruskorjauksessa|title=Merivoimat jälleen torpedoaikaan – Hamina-luokan ohjusveneet peruskorjauksessa|date=25 May 2018 ))</ref><ref>((Cite web |url=http://dsca.mil/major-arms-sales/finland-evolved-seasparrow-missiles-essm |title=Finland – Evolved SEASPARROW Missiles (ESSM) &#124; the Official Home of the Defense Security Cooperation Agency |access-date=2018-02-06 |archive-date=2018-02-06 |archive-url=https://web.archive.org/web/20180206190333/http://dsca.mil/major-arms-sales/finland-evolved-seasparrow-missiles-essm |url-status=dead ))</ref>

((-))

== Design==
The vessel's hull is constructed of [[aluminum]] and the superstructures are constructed of reinforced [[carbon fiber]] composite. The vessels have a very low displacement and are very maneuverable. They are equipped with [[pump-jet|water jet]]s instead of propellers, which allow them to operate in very shallow waters and accelerate, slow down and turn in unconventional ways.

The ''Hamina'' class are very potent vessels, boasting surveillance and firepower capacities which are usually found in ships twice the size.

=== Stealth technology ===
[[File:Hamina Class Finnish Navy.JPG|thumb|left|300px|upright|alt=Hamina Class "Hanko, 82" at sea|''Hanko'', photographed in the Gulf of Finland in 2009]]

The ''Hamina'' class has been designed and constructed as [[stealth ship]]s with minimal magnetic, heat and radar signatures.

The shape of the vessel has been designed to reduce [[radar]] signature. Metal parts have been covered with [[radar absorbent material]], and the composite parts have radar absorbent material embedded in the structure. Radar transparent materials have been used where applicable.

Unlike glass fiber, carbon fiber blocks radio waves. This protects ship's electronics against [[electromagnetic pulse]]. In addition, it stops any radio frequency signals generated by ships electronic devices escaping outside. Except for the bridge, the vessel has no windows that would allow the signals to escape.

The vessel contains hardly any steel parts, thus generating very low magnetic field. The remaining magnetic field is actively canceled with [[electromagnet]]s.

Exhaust gases can be directed underwater to minimize thermal signature, or up in the air to minimize sound in submarines direction. 50 nozzles around the decks and upper structures can be used to spray seawater on the vessel to cool it. In addition, the nozzles can be used to clean the ship after chemical attack or radioactive fall-out.

=== Weapons ===
The ''Hamina'' class have the latest in surveillance and weapons technology all integrated into an intelligent command system. A Hamina class vessel can monitor about ((convert|200|km)) of air space and its [[Umkhonto missile|Umkhonto]] surface-to-air missile system can simultaneously engage a maximum of eight aircraft, up to ((convert|14|km)) away, while the vessel's anti-ship missiles have a range in excess of over ((convert|250|km)).

The ''Hamina'' class' primary weaponry is four [[RBS15|RBS-15 Mk.3]] anti-ship missiles. The vessels are further equipped with a [[Bofors 57 mm L/70 naval artillery gun|Bofors 57 mm gun]] against surface and aerial targets as well as the [[Umkhonto missile|Umkhonto-IR]] surface-to-air missiles, [[MASS (decoy system)|MASS decoy system]] and two [[NSV (machine gun)|12.7 mm]] heavy machine guns. It is also possible to use the ships for minelaying.

The software of the centralized combat control system is [[Commercial off-the-shelf|COTS]] oriented, built on top of Linux running on redundant x86 rack servers, which makes maintenance and future updates and optimizations simpler.

In early 2018, Finland announced the mid-life upgrade program, which will equip all four boats in the class with new Swedish lightweight anti-submarine warfare torpedoes in the years 2023−2025 and extend the life of the boats to 2035.<ref>((Cite web|url=http://defense-update.com/20180104_hamina_midlife_upgrade.html|title = Finland Arms Stealth Boats with New Swedish Torpedoes|date = 4 January 2018))</ref>

== Vessels ==
;FNS ''Hamina''
:Pennant number: 80
:Builder: [[Aker Finnyards]]
:Ordered: December 1996
:Commissioned: 24 August 1998
:Home base: Upinniemi
:Current status: In active service.
;FNS ''Tornio''
[[File:Tornio Särkänsalmi 1.JPG|thumb|''Tornio'' (81)]]
:Pennant number: 81
:Builder: [[Aker Finnyards]]
:Ordered: 15 February 2001
:Commissioned: 12 May 2003
:Home base: Upinniemi
:Current status: In active service
;FNS ''Hanko''
:Pennant number: 82
:Builder: [[Aker Finnyards]]
:Ordered: 3 December 2003
:Commissioned: 22 June 2005
:Home base: Upinniemi
:Current status: In active service
[[File:Missile boat Pori South Harbor 1.JPG|thumb|''Pori'' (83)]]
;FNS ''Pori''
:Pennant number: 83
:Builder: [[Aker Finnyards]]
:Ordered: 15 February 2005
:Commissioned: 19 June 2006
:Home base: Upinniemi
:Current status: In active service

==Similar ships==
((Commons category|Hamina class missile boat))
*((sclass|Houbei|missile boat|1))
*((sclass|Skjold|corvette|1))
*((sclass|Roussen|fast attack craft|1))

== References ==
((Reflist))

==Further reading==
* Domonyi, H: "Hamina-luokan ohjusvene Tornio: Tekniikan lippulaiva", ''Tekniikan Maailma'' 18/2006

((Active ships of the Finnish Navy))

|

((DEFAULTSORT:Hamina Class Missile Boat))
[[Category:Missile boat classes]]
[[Category:Missile boats of the Finnish Navy]]
[[Category:Ships built in Finland]]

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