Selford class

File:SDN-P960.jpg The SDN Selford underway near Pernya.
Class overview
Builders:	Ormonde Marine, S/G/K Gemini Marine Telar Defense Technologies
Operators:	File:Cossack State Flag.png Dniegua
Cost:	Project cost: $386 million Price per unit: $28 million
In commission:	2006-current
Planned:	As ordered
Building:	4
Completed:	8
Active:	8
General characteristics
Type:	Offshore patrol Corvette
Displacement:	270 tonnes full load
Length:	47.5 meters
Beam:	13.5 meters
Draught:	1.0 meter
Propulsion:	2 × Ormonde Marine MGT-L568 plus 2 x Ormonde AMGT-Lv889 gas turbines →16,840 horsepower
Speed:	In rough sea: 45 knots In calm sea:65+ knots(classified)
Range:	860 nmi at 40 knots
Endurance:	7 days
Complement:	18
Sensors and processing systems:	Telar Defense MRR-3D-NG air/surface radar Scantronic Defense MWU-200 Fire Control System Scantronic CS-3701 electronic warfare suite Telar D-20 Electro-optical sensor Telar Underwater Systems Ek-220 Sonar suite
Electronic warfare & decoys:	2 × Telar Marine Shield 102 mm sextuple fixed chaff launchers (internal) Electronic Countermeasure
Armament:	8 × Polyphemus Sea Strike missiles Surface-to-surface missile, kept in an internal weapons bay 1 × 76mm Bow-mounted rapid fire, multi-role cannon in low-cross section mount 2 × 27mm AG M/82 Machine Guns AA Missles
Notes:	Soft kill: Scantronic MD-6 MASS(Multi Ammunition Softkill System) Scantronic EDC-210 SDU (Secure Data Uplink)

The Selford-class Corvette are a class of medium, superfast, stealth missile craft in service with the Royal Navy of Dniegua. The boats were formerly classed as MTBs (motor torpedo boats) but, from 2008, Dniegua has described them as corvettes because their seaworthiness is seen as comparable to corvettes, and because they do not carry torpedoes. The ships were constructed at Ormonde Marines naval yard in Nvaronyy. The Secutor class corvettes remain the fastest armed craft in the world with a published top speed of 65 knots, though it is believed to be capable to traveling significantly faster.

Development and Production

The Selford-class vessels began with the beginning of a significant naval rearmament, and the first preproduction version was ordered on 18 August 2004. The first ship of its class was launched on 22 September 2005 and commissioned 17 January 2006. The final design was changed compared to the prototype Selford, which itself was rebuilt to the new specifications. Most notably, the vessels use 4 gas turbines, two large ones and two small ones, giving greater power than prototype units. Two diesel propulsion units used previously at loiter speeds were also removed. The foredeck was strengthened to accommodate the addition of a 76mm Super Rapid gun. The hull material was produced by a different method to improve strength and minimize vulnerability to fire. The bridge saw some changes, including an upgrade to six weapon systems control consoles.

The ships are currently constructed at Ormonde Marines naval yard under military guard.

Design

The Selford class design is a surface effect craft, constructed of glass fiber/carbon composite materials. Buoyancy is augmented underway by a fan-blown skirted compartment between the two rigid catamaran-type hulls. This provides an alternative solution to the planing hull/vee hull compromise: the air cushion reduces wave concussion at high speeds while presenting a low-drag flat planing profile at the waterline.

To ensure stealth capabilities, coatings of radar absorbent materials (RAM) have been used in the load-bearing structures over large areas of the ship. This strategy leads to significant weight saving compared to the conventional construction technique of applying RAM cladding to the external surfaces. The ship's profile has a faceted appearance with no right angle structures and few orientations of reflective panels. Doors and hatches are flush with the surfaces and the windows are flush without visible coaming (edge of window aperture) and are fitted with radar reflective screens. The vessels are additionally protected by a MASS sensor/decoy system.

Operational History

Selford class – significant dates

#	Name	Laid down	Launched	Commissioned	Notes
P960	Selford	20 August 2005	22 September 2005	17 January 2006
P961	Osmak	October 2005	1 April 2006	9 September 2006
P962	Skudd	November 2005	1 April 2006	28 September 2006
P963	Esmeuvya	October 2006	15 January 2007	30 June 2007
P964	Livohka	May 2007		April 2008
P965	Arkala	December 2007		April 2008
P967	Ula'rya	October 2008		April 2010
P968	Yarrin	December 2008		August 2010