The Hamina boats were built in the late 1990s and early 2000s. They are the fourth generation of Finnish missile boats. All boats are named after Finnish coastal towns.
The first boat was ordered in December 1996, and the fourth entered the Finnish fleet in June 2006.
The hull of the vessel is made of aluminum and the superstructures are made of reinforced composite carbon fiber. The shape of the vessel was designed specifically to reduce radar signature. The metal parts are covered with an absorbent material.
Fifty nozzles around the deck and superstructures are used to cool the vessel to further reduce its visibility. In addition, the nozzles can be used to clean a ship that has entered a zone of chemical or radioactive contamination.
The main power plant of the Hamina-type missile boats includes two 16V 538 TV93 diesel engines (total power 7550 hp) of the German company MTU, each of which operates through a gear transmission for two reversible water-jet propellers. This allows the use of boats in shallow water, as well as maneuvering in narrow straits.
The main armament of these missile boats is made up of four container launchers of MTO-85M anti-ship missiles. This missile was created by the Swedish company SAAB on the basis of the RBS-15 Mk2 anti-ship missile. The main difference from the prototype is the improved turbojet engine, thanks to which the maximum firing range is increased by 50 percent - up to 150 km.
In addition, the boat is equipped with a 57-mm gun mount of the Bofors company, a vertical launch facility for eight Umkonto short-range anti-aircraft missiles from the South African company Denel, as well as two 12.7 mm machine guns. The solution of anti-sabotage tasks is provided by the Elma nine-barreled grenade launcher.
The radio-electronic means include a three-coordinate radar system for detecting air and surface targets TRS-3D / I6-ES (maximum detection range of air targets 90 km), as well as a Tseros 200 fire control system with radar, television, thermal imaging stations and a laser rangefinder. The boat is also equipped with a keel and lowered hydroacoustic stations.
The processing of data coming from the specified radio equipment or external sources, and the issuance of target designation to weapon systems are carried out using the ANCS-2000 automated combat control system.
