Siinkar-class frigate

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The Siinkar-class frigate is a class of guided missile frigates of the Mirhaime Realm Armada. The Siinkar-class is based on the preceding Incheon-class frigate, and has otherwise been referred to as the Victory-class batch II or the SCF-II. Ten Siinkar-class ships are planned (five of which are completed by 2022), with the extended final goal of 27-29 frigates (of all types) in the MRA. The Siinkar-class frigates are currently being built by the Larman Shipbuilding and Marine Engineering Corporation (LSMEC) in collaboration with several major subcontractors such as Putz Technology Inc.; Zaraus Motors; and Vitaris Marine Engineering Co.

Design

The ships of the Siinkar class are approximately 132.15 meters (433.6 ft) long at the waterline and 143 m (469 ft) long overall. They have a beam of 17.44 m (57.2 ft) and a draft of 5 m (16 ft), though the draft increases to 7 m (23 ft) at the sonar array in the bulbous bow. They displace 5,690 long tons (5,780 t) at full load. Steering is controlled by a single roll-stabilized rudder; the ships have a turning radius of 570 m (1,870 ft). Standard on class frigates often have a crew of 38 officers, 64 petty officers, and 140 enlisted sailors. They have accommodations for an additional thirteen officers and sailors as part of a squadron commander's staff, and they have crew provisions for female sailors. The ships can remain at sea for 21 days at a time.

The class' hull, as said above, was especially designed to minimize radar signature by incorporating seven watertight compartments. The presented Siinkar is designed with a capacity for an extra 270 long tons (270 t) of weight, to allow for future additions of new weapons and sensors without compromising the ships' efficiency.

Ships of the Siinkar-class are equipped with a combined diesel and gas (CODAG) propulsion system with the two operating shafts working independently. The diesel engines are installed in a non-walkable sound-proof capsule. The shafts drive two five-bladed variable-pitch propellers. The VA LM31500 GT/MLG gas turbine is rated at 31,500 shaft horsepower (23,500 kW) and the Larman 20V 1163 TB93 diesels provide a combined 20,100 brake horsepower (15,000 kW). The total 51,600 hp (38,500 kW) propulsion system provides a top speed of 29 knots (54 km/h; 33 mph); while operating the diesels only, the ships can cruise for 4,000 nautical miles (7,400 km; 4,600 mi) at a speed of 18 kn (33 km/h; 21 mph). The ships are equipped with four 1,000 Kilowatt diesel generators that operate at 400 Volts (V) and 115 V.

Steering of the vessel is controlled via the Rudder Roll System, which communicates information about the ship's position and rudder dampening signals, allowing the ships to maintain "almost unprecedented stability" in as high as sea state 5.

Ships of this class are optimized for the anti-air warfare role, while still maintaining relatively powerful anti ship weaponries to also fill in the role of a patrol frigate. The primary anti-air weapons is the 32-cell L-21 Mod 1 (a licensed copy of the 32-cell Mk 41 Mod 10 vertical launching system), equipped with twenty-four SA-23 'Roy' Surface to Air Missiles (more on that later) and thirty-two domestically designed and manufactured ANM-1 'Seagull' missiles (to be added later).

Point-defense against cruise missiles will be provided by a pair of 21-round infrared homing RAM Barak surface to air launchers which saw its introduction with the frigate. The ships will also equipped with two four-cell RGM-84 Harpoon anti-ship missile launchers.

For defense against submarines, the frigate will carry two triple-launchers for the newly introduced 324 mm (12.8 in) Terreton torpedoes, which possess a shaped warhead designed to penetrate double hull designs commonly seen on contemporary submarines. The ships will also carry a variety of guns, including one dual-purpose DP-76 Gun (licensed copy of 62-caliber 76-millimeter (3 in) gun by OTO Melara). They are also armed with two 27 mm (1.1 in) Heavy Raven Naval remote-controlled autocannons in single mounts.

All ships of the Siinkar-class are equipped with a flight deck and hangar that can accommodate two helicopters. The flight deck is rated to accommodate a 15-metric-ton (15-long-ton; 17-short-ton) helicopter in conditions up to sea state 6. The helicopter handling system from Vitaris Amphibious uses laser guided and computer controlled manipulator arms to secure the helicopter after landing.

For the role of electronics, and countermeasures role the ships are equipped with an advanced sensor and weapons suite. The primary sensors for this role are the long range surveillance radar Multibeam Acquisition Radar, L Band (MARL) and the multi-function 3D Radar APA Radar. The MARL and APA sets are highly complementary, in the sense that MARL is a L band radar providing very long range surveillance while APA is an X band radar providing precise target tracking, a highly capable horizon search capability, and missile guidance using the Interrupted Continuous Wave Illumination (ICWI) technique, thus allowing guidance of 32 semi-active radar homing missiles in flight simultaneously, including 16 in the terminal guidance phase. In a nutshell, the MARL alone has a detection range for stealth missiles at roughly 65km, aircrafts at roughly 400 and ballistic missiles at roughly 2000km, with a maximal 2000 airborne targets detection, and 200 seaborne, and the APA system stands as a supporting X band radar system that intensifies the MARL.

The ships are also equipped with two Pütz 9600-M ARPA navigation radars. All of this are controlled by a Modular Pütz Supercomputer running on a processor that has a total of 3 billion transistors, and as its nature, can be changed later on.