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Frigates
In modern military terminology, a frigate is a warship intended to protect other warships and merchant ships as anti-submarine warfare (ASW) combatants for amphibious expeditionary forces, underway replenishment groups, and merchant convoys. Frigates fulfill a Protection of Shipping (POS) mission as Anti-Submarine Warfare (ASW) combatants for amphibious expeditionary forces, underway replenishment groups and merchant convoys.
The U.S. Navy adopted the classification "frigate" (FF) for ships used for open-ocean escort and patrol. When they were developed during World War II, frigates were classified as destroyer escorts (DEs). Frigates resemble destroyers in appearance, but they are slower, have only a single screw, and carry less armament. FFs have grown in size from about 1,500 tons displacement to over 4,000 tons, as in the Knox class (FF-1052). Their armament varies from class to class.
The guided missile frigates (FFGs) bring an anti-air warfare (AAW) capability to the frigate mission, but they have some limitations. Designed as cost effective surface combatants, they lack the multi-mission capability necessary for modern surface combatants faced with multiple, high technology threats. They also offer limited capacity for growth.
Destroyers
Destroyers (DDs) and guided-missile destroyers (DDGs) are multi-purpose ships that are useful in almost any kind of naval operation. They are fast ships with a variety of armament, but little or no armor. For protection, they depend on their speed and mobility. Their displacement varies from about 4,500 tons to 7,800 tons. The principal mission of destroyers is to operate offensively and defensively against submarines and surface ships and to take defensive action against air attacks. They also provide gunfire support for amphibious assaults and perform patrol, search, and rescue missions.
Photo Archive Main Index
http://www.navy.mil/media/allhands/acrobat/ah200601.pdf
ALL HANDS magazine which will give you an explaination of all the Navy ships, starts on page 11.
The first of Pakistan's four Sword-class frigates, PNS Zulfiqar, is preparing for a final sea inspection later in 2010 before being declared fully operational. Capt.Baig spoke to Guy Tormens when the ship visited Doha, Qatar.
Launched by China State Shipbuilding Corporation at its Hudong-Zhonghua Shipyard in Shanghai on 19th April 2008, PNS Zulfiqar - the first of Pakistan Navy's (PN's) four Sword-class (F-22P) frigates - was commissioned on 30th July 2009.
Having completed the technical acceptance process followed by pier-side and at-sea training, the ship's company commenced a delivery voyage that took Zulfiqar to Manado for Indonesia's International Fleet Review (12-19 August), Port Kalang in Malaysia (27-30 August) and Colombo, Sri Lanka (5-7 Sept). The frigate arrived in Karachi on 13 September and was inducted into the PN fleet on 19 September.
"the remainder 0f 2009 and early 2010 was taken up by testing our sensors and weapons in home waters" says Capt. Mirza Foad Amin Baig, the Commanding Officer."in early March we sailed from Karachi for a deployment to the Arabian Gulf, before taking part in DIMDEX 2010 (The 2nd Doha International Maritime Defence Exhibition in Qatar, we successfully fired C-802 missiles in the Northern Arabian sea on 12 March, and on our way to Doha we conducted passex serials with both the Saudi navy and the Qatari naval forces.
Despite its strong visual resemblances to the Chinese navy's Jiangwei II-class (Type 053H3) frigates, Capt. Baig says the 3,144-ton Zulfiqar and its sister ships were designed to specific Pakistani requirements and incorporate many features hiitherto unknown in PN vessels. " most obvious are the radar cross-section reduction measures, clearly visible in the hull, main gun and the slightly angling superstructure". he notes." A lot of effort was also put into infrared signature, noise and electro-magnetic emission reduction. She is also the first major surface combatant of the PN to have a high level of automation on board".
A integrated platform management system controls the engines, hull services, electrical distribution and damage-control systems,"Zulfiqar has been fitted with a sophisticated German MTU damage-control system. Automatic detectors and sensor systems ensure an early warning for any damage occuring in any operational situation" says Capt.Baig. "Buoyancy is assured with two adjacent compartments flooded and a sprinkler system is fitted throughout the ship. these enhanced damage-control capabilities and the in-built redundency are important factors for unsupported long-distance crossings".Designed primarily for anti-submarine warfare (ASW) and ant-surface warfare (ASuW), Zulfiqar also has a local area self-defense capability."I dare say that a Sword-class unit packs almost the combined fire-power of our six Tariq-class (Ex-UK RN Amazon-class (Type-21)) frigates. We feature quite a few capabilities not found on the pther Pakistani frigates".
The ASuW suite consists of two quadruple C-802 launchers (CSS-N-8'Saccade') and a 76mm gun based on the Russian AK-176M weapon. ASW assets comprise two triple ET-52C 324mm torpedo tubes, two sextuple RDC-32 rocket launchers and an Echo Type 5 hull-mounted active search and track sonar. An octuple launcher for FM-90N anti-air missiles is located forward of the bridge and two Type 730 30mm seven-barrel guns are provided for close-in defence (CIWS).
"The embarked Harbin Z-9EC helicopter provides us with over-the-horizon targeting for the C-802 missiles as well as a long-range detection capability and anti-submarine capability",Capt.Baig states."Our combat management suite is based on the chinese ZKJ-3C (a variant of the French TAVITAC) and the electronic-warfare system comprises the Chinese RWD-8 intercept system and a NJ8I-3 jammer".Sensors include a SUR-17 air-surveillence radar, an SR-60 air/surface search radar and a Kelvin-Hughes 2007 navigation radar.
While accepting that the integration of Chinese and Western systems was challenging, Capt.Baig says the package works well in practice and that Zulfiqar has considerable potential for future upgrade; for example, there is a space to install a vertical launch system in place of the FM-90N launcher. he anticipates that a forthcoming modernisation will see the FM-90N and SUR-17 combination replaced by the Chinese HQ-16 (a variant of the Russian SA-N-12 Shril).
Capt.Baig is pleased with the seaworthiness of the 123.4 m-long hull which, he says is "shaped to minimize the resistence of water and improve seakeeping in rough sea conditions. Two rudders and two controlable pitch propellers allow excellent manoeuvarability. We can conduct our tasks up to Sea State 5. Our CODAD (combined diesel and diesel) propulsion system (two Tognum MTU 12V 1163 TB 83 diesel engines) gives us a top speed of 28+ kt and the onboard fuel capacity provides a steaming range in excess of 6,000 n miles at 18 kt".
Compared with older vessels, crew habitability standards have been improved and noise kept to a minimum while air-conditioning has been installed in accomodation and operating compartments. Capt. Baig says"the core crew is 188, but we have a capacity for 212 and for short periods even up to 250".
Further weapons and sensor trials are planned before the frigate undergoes a final sea inspection later in 2010 and - all being well - is declared fully operational."one may well see PNS Zulfiqar taking part in anti-piracy operations in 2011".
The second Sword-class frigate, PNS Shamsheer, was commissioned in Shanghai on 19 December 2009, arrived in Karachi on 23 January 2010 (after stops in Singapore and Colombo) and was admitted into the Pakistani fleet on 8 Feburary. Ship three, Saif, is scheduled to commission on 31 July. The keel of the final unit, Aslat, was laid down on 10 December 2009 at Karachi Shipyard and Engineering Works and scheduled to join the fleet in December 2013.
China’s delivery of the third F-22P frigate PNS Saif to Pakistan Navy is yet another burgeoning proof of Pak-China relations and fulfillment of Chinese pledge to support Pakistan’s defence. In yet another landmark achievement in the expansion of the unwavering bilateral defence cooperation between Pakistan and China, Beijing has delivered the third of the four F-22P frigates PNS Saif to the Pakistan Navy (PN). The newly built warship of the sword class series constructed by Hudong Zhonghua Shipyard Shanghai was delivered in a colourful and impressive ceremony. As per the schedule, the PN’s fourth F-22 frigate, being constructed at the Karachi Shipyard is progressing satisfactorily. This move by the Navy would be of great help to Pakistan in achieving self-reliance towards defence of its territorial waters.
The F-22P or Zulfiquar (sword) class frigate, an improved version of the Chinese Type 053H3, is a general purpose frigate being built by China and Pakistan for the PN. The first ship, PNS Zulfiquar, was handed over to the PN on 30 July 2009 and the second, PNS Shamsheer, on January 23, 2010. The third, after undergoing sea trials has just been handed over, while a fourth is under construction. It has been reported that the F-22P Frigates are equipped with state-of-the-art weapons and sensors. The ships also carry Z9EC helicopters onboard. Pakistan had been negotiating with China for the supply of 4 frigates since the late 1990s. The contract was signed on 4 April 2006 with the conclusion of negotiations for financing and technology transfer. The first three have been built at the Hudong Zhonghua Shipyard in Shanghai, China, while the last is under construction in Pakistan by Karachi Shipyard and Engineering Works (KSEW). The $750 million contract also includes 4-6 Harbin Z-9EC antisubmarine warfare (ASW) helicopters as well as ammunition for the frigates.
With the addition of these ships, the strength of PN Fleet has increased considerably with much needed capabilities, while contributing in enhancement of country’s shipbuilding capabilities. The F-22P hull uses many of the radar cross-section reduction features of China’s Type 054 frigate to help it evade detection by radars mounted on other ships, aircraft and anti-ship missiles. The 76.2 mm caliber main gun is a Chinese development of the Russian AK-176M, the main difference being that the Chinese variant adopts a re-designed stealthy turret to reduce radar detection. The gun is designed to engage ships, aircraft and anti-ship missiles. In front of the main gun are two 6-cell RDC-32 anti-submarine rocket launchers. The frigate’s primary surface-to-surface missile armament comprises eight C-802 subsonic anti-ship missiles carried in two launchers with four cells each, fitted between the foremast and the funnel. These containers are also compatible with the CY series anti-submarine rockets and may be loaded with a combination of anti-ship and anti-submarine weapons.
The FM-90N surface-to-air missile (SAM) system is fitted between the main deck and main gun. The launcher has eight cells each containing one missile and is fitted on a mount that can be elevated and traversed in the direction of the threat. The FM-90N can engage several targets, including supersonic and sub-sonic sea-skimming missiles, using different guidance modes simultaneously. The system is also designed to engage small targets such as unmanned aerial vehicles (UAV). A close-in weapon system (CIWS), the Type 730B, is mounted on the aircraft hangar. Comprising two seven-barrel Gatling guns of 30 mm caliber, the F-22P is believed to be the first ship armed with the Type 730B, which uses off-mount sensors such as the Type 347G radar and the OFC-3 electro-optic director.
The guns are mounted side-by-side on the aircraft hanger, with the off-mount sensors in between. The CIWS can be upgraded with the FL-3000N fire-and-forget missile system by installing up to two single-round FL-3000N launchers on each existing CIWS gun mount. The Harbin Z-9EC anti-submarine warfare (ASW) helicopter is equipped with surface-search radar, low frequency dipping sonar, radar warning receiver, Doppler navigation system and armed with torpedoes. The helicopter can be armed with one torpedo on the starboard side. A small antenna on the roof may provide a data-link, allowing the Z-9 to act as a relay for targeting data between the ship and long range anti-ship missiles such as the C-802. The beauty of China’s support to Pakistan is that it is willing to provide transfer of technology, help develop the infrastructure for indigenization and soft loans to support the project with no strings attached. Other nations are either just not willing to share technology. Even if they agree to provide transfer of technology, it is at exorbitant costs and may have strings attached. Some nations insist that Pakistani technology is too backward, lacks the skill and wherewithal and is unfit for accepting hi-tech expertise. China has proved over the ages that it considers Pakistan capable and worthy of keeping pace with the latest developments and making strides towards indigenization. The delivery of the F-22 frigates to PN is burgeoning evidence of the long lasting ties between Pakistan and China. In this period of global economic meltdown, China not only has a stable economy but it holds roughly $1.5 trillion in US assets, at least 65 percent of China’s total foreign assets, and it is the second biggest foreign holder of US debt after Japan.
Pak-China joint ventures to produce JF-17 Thunder fighter aircraft, K-8 Trainer aircraft, Al-Khalid Tank, F-22 Naval Frigates have given a new dimension to Pak-China cooperation in the field of defense. Heavy Rebuild Factory (HRF) at Taxila, Pakistan Aeronautical Complex at Kamra was also established with Chinese assistance. The Karakoram Highway, the strategic port of Gawadar and nuclear energy reactors are a manifestation of China’s sustained interest in Pakistan, which make it imperative for us to reach out to our Chinese friends for our common endeavours for building a better future for our peoples and overcome the challenges to both nations and strive for prosperity. In these trying times it is imperative that we recognize our true friends and hold on to them steadfastly.
http://pakobserver.net/detailnews.asp?id=53749