Flyvefisken class patrol vessel

The "Flyvefisken" class patrol vessels are warships of the Royal Danish Navy. The class is also known as the Standardflex 300 or SF300 class.

Containerised weapon systems

The Flyvefisken ships are innovative in that they were built with a modular design: they have a standard hull in which containerised weapon systems can be placed. This allows them to change roles. Typically 48 hours are necessary to change roles. This enables the ships to be configured to perform these roles:

* surveillance
* surface combat
* anti-submarine warfare (ASW)
* mine countermeasures/minehunter
* minelayer
* pollution control

The containers measure 3.5x3x2.5 m. One container goes on the foredeck; the other 3 go on the quarterdeck behind the superstructure and funnel.

Ships in class

A total of 14 ships, where build in the class in three series:

^a) = Sold to Lithuania, March 2007

Series 1 = P550-P556, series 2 = P557-P562, series 3 = P563.
The difference between the series is mainly in the configuration of the propulsion system. Series 2 is not equipped with hydraulic propulsion, but instead has one more aux. engine, and series 3 has further one aux. engine.

Characteristics

Complement: 19-29 depending on role

Physical dimensions

* Displacement: 480 tons full load
* Length: 54 m (177.2 ft)
* Beam: 9 m (29.5 ft)
* Draught: 2.5 m (8.2 ft)

Propulsion

Uses combined diesel and gas engines:
* 1 × General Electric LM500 gas turbine 4066 kW (5450 hp)
* 2 MTU 16V 396TB94 diesels 4226 kW (5440 hp) total
* 1 auxiliary GM 12V-71 diesel, 373 kW (540 hp) Hydraulic propulsion
* 3 auxiliary GM 6-71 diesel generators

* Speed: 30 kt (turbine+diesels); 20 knots on MTU's; 7 knots on hydraulic drive - Range 3860 km at 18 knots

Armament

The armament depends on the ships current role, but include the following options:

* 8 launchers for Boeing RGM-84 HarpoonBlock II SSM
* up to 6 launchers Sea Sparrow SAM
* 1 OTO Melara 76 mm/62 gun
* 2 12.7 mm machine guns
* 2 21in (533 mm) torpedo tubes; type 613 wire-guided torpedoes
* 60 mines

Sensors

* Terma Scanter Mil 009 navigational radar
* Thales TMS 2640 Salmon variable depth sonar (only in MCM-configuration)

External links

* [http://www.navalhistory.dk/English/TheShips/F/Flyvefisken1989.htm Danish Naval History]
* [http://www.naval-technology.com/projects/fly/index.html Naval technology on Flyvefisken class]
* [http://www.geae.com/aboutgeae/presscenter/marine/marine_20000419b.html General Electric]