The ''Norrköping'' class were a group of fast attack craft built for the

Swedish Navy The Swedish Navy ( sv, Svenska marinen) is the naval branch of the Swedish Armed Forces. It is composed of surface and submarine naval units – the Fleet () – as well as marine units, the Amphibious Corps (). In Swedish, vessels o ...

in the 1970s. Twelve ships were built, with the last ship decommissioned in 2005. The boats have also been called the Spica II class and were named after Swedish cities.

Design

The initial design was a version of the earlier ''Spica''-class torpedo boat with some minor changes.

Machinery

The power train was identical to the preceding class and comprised three Bristol Proteus gas turbine engines driving three propellers

Armament

The initial armament was identical to the ''Spica'' class, comprising a

Bofors 57 mm gun The Bofors 57 mm gun is a nickname or designation given to several types of guns designed and developed by the Swedish company Bofors: *, a 57 mm anti tank gun for the Swedish army during WW2. * Bofors 57 mm Automatic Gun L/50, a 57 ...

and six

torpedo tube A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboa ...

s. There was a refit programme in 1982–1985, where four launchers for

RBS-15 The RBS 15 (Robotsystem 15) is a long-range fire-and-forget surface-to-surface and air-to-surface anti-ship missile. The later version Mk. III has the ability to attack land targets as well. The missile was developed by the Swedish company Sa ...

anti-ship missile An anti-ship missile (AShM) is a guided missile that is designed for use against ships and large boats. Most anti-ship missiles are of the sea skimming variety, and many use a combination of inertial guidance and active radar homing. A good ...

s replaced four torpedo tubes. Mines could be carried in place of the torpedoes or missiles. The 1982 refit also included new sensors (Sea Giraffe radar) and a new weapons control system (Maris 880).

''Ystad'' class modernisation

Six boats were modernised between 1996 and 2000 with new fire control systems and other electronics. The boats were originally set to be operated until 2010 but they were taken out of service early due to financial reasons with HSwMS ''Ystad'' decommissioning in 2005.

Royal Malaysian Navy

A version of this design was built for the

Royal Malaysian Navy The Royal Malaysian Navy (RMN, ms, Tentera Laut Diraja Malaysia; TLDM; Jawi: ) is the naval arm of the Malaysian Armed Forces. RMN is the main agency responsible for the country's maritime surveillance and defense operations. RMN's area of o ...

by Karlskrona dockyard as the . These ships had an all diesel power plant, with a revised

superstructure A superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships. Aboard ships and large boats On water craft, the superstruct ...

design, different electronics and

Exocet The Exocet () is a French-built anti-ship missile whose various versions can be launched from surface vessels, submarines, helicopters and fixed-wing aircraft. Etymology The missile's name was given by M. Guillot, then the technical director ...

missiles.

Ships

All ships were built by Karlskrona Dockyard

References

* {{DEFAULTSORT:Norrkoping-class missile boat Torpedo boats of the Swedish Navy Torpedo boat classes Torpedo boats of the Cold War Missile boat classes Ships built in Karlskrona