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

Contents 1 Containerised weapon systems 2 Ships in class 3 Characteristics 3.1 Physical dimensions 3.2 Propulsion 3.3 Armament 3.4 Sensors 4 External links

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.

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

Name	Laid down	Launched	Commissioned	Decommissioned
P550 HDMS Flyvefisken	15 aug 1985	26 apr 1986	19 dec 1989	- a)
P551 HDMS Hajen	feb 1988	06 aug 1989	19 aug 1990	- a)
P552 HDMS Havkatten	aug 1988	13 jan 1990	01 nov 1990	-
P553 HDMS Laxen	mar 1988	20 maj 1990	12 mar 1991	-
P554 HDMS Makrelen	dec 1988	08 jan 1991	04 oct 1991	-
P555 HDMS Støren	aug 1989	01 sep 1991	24 apr 1992	-
P556 HDMS Sværdfisken	-	01 sep 1991	01 feb 1992	02 aug 2006
P557 HDMS Glenten	-	1992	01 feb 1992	-
P558 HDMS Gribben	-	1992	01 jul 1993	-
P559 HDMS Lommen	-	1993	21 jan 1994	-
P560 HDMS Ravnen	-	1994	07 oct 1994	-
P561 HDMS Skaden	-	1994	10 apr 1995	-
P562 HDMS Viben	-	1995	15 jan 1996	-
P563 HDMS Søløven	-	1995	27 may 1996	-

^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.

Complement: 19-29 depending on role

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

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 kt on MTU's; 7 kt on hydraulic drive - Range 3860 km at 18 kt

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

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

• Danish Naval History
• Naval technology on Flyvefisken class
• General Electric