OVERVIEW: The Hämeenmaa-class minelayer is a powered by a combined diesel and diesel (CODAD) system with two shafts. 

DETAILS:   The Hämeenmaa-class minelayer is primarily designed for laying mines in the Baltic Sea. The  can also be deployed in escort, patrol, anti-submarine and sea transport missions.  The hull of the vessel is made of steel, while alloys have been used in the superstructure. The design incorporates stealth technology. The Hämeenmaa was the first vessel class in the Finnish Navy to possess stealth features. These vessels are capable of round-the-year operations, and have a shallow draft for only 3 meters.

For minelaying, the Hämeenmaa Class vessels have four mine rails off the stern of the ship. The rails can carry 100 to 150 mines. The total length of the four rails is 200m.

For air defense, the ship is equipped with  an eight-cell Umkhonto-IR SAM vertical launch system. This vertical launcher can fire eight surface-to-air missiles. The Umkhonto-IR missile has an operational range of 12km and uses an all-aspect infrared, command update "fire and forget" guidance system. The Hämeenmaa also has a Bofors 57mm dual-purpose gun for air and surface warfare. 

Electronics and Sensor sysytems include the TRS3D-16ES 3-D surveillance radar.  Sonars include the Kongsberg ST2400 variable depth sonar (VDS), as well as the SS2030 hull mounted sonar.  For ASW, the ship is equipped with two RBU-1200 ASROC .  It also has two rails to carry depth charges.


SPECIFICATIONS:

Displacement: 		1,450 tons (approx).
Maximum Speed:  		20 knots 
Propulsion: 		CODAD. Two shafts Wärtsilä Vasa 16V22 diesel engines @ 2,600kW. Two controllable pitch 			propellers. 			
Range at Economical Speed: 	3,000 nautical miles
Complement:		 60 personnel

NOTES: IOC: 1992. Ships in Class: Hämeenmaa (02); Uusimaa (05)


SOURCES: "Hameenmaa Class." Naval Technology. Last modified September 14, 2010. https://www.naval-technology.com/projects/hameenmaaclassminela/?cf-view.

Drafted by ChatGPT and ProResearcher, edited by human
