Pakistan and United States sign a contract for the transfer of USS McInerney

[Penguin]

i am not sure about the sonar AN-SQS56 which orginally comes with it...

If combined with LAMPS III helicoptes and towed array, likely better than anything currently in PN service ....

AN/SQS-56(I)/DE1160(I) Sonar Systems

The DE1160(I) is a State-of-the-Art modern sonar system which can be implemented utilizing a hull transducer or a towed active transducer or both. The DE1160(I) sonar is an integrated ASW, Mine Avoidance and Torpedo Defense underwater system.

The system utilizes proven transducer and transmitter technology and incorporates an open architecture processing and display system using color display processing. The DE1160(I) Sonar is available in frequencies centered at 3.75Khz, 7.5Khz and 12Khz.

The DE1160(I) features automatic computer-aided detection and tracking, multiple simultaneous receivers for enhanced shallow water performance, a small object avoidance detection function which was demonstrated during Operation Desert Storm, torpedo defense algorithms and color displays. Geographic stabilized PPI displays and B-scan displays are used for detection and enhanced A-scan and range-crossrange windows which display target doppler information are used as classification aids. A rapid replay feature is provided to allow the operator to evaluate target motion and discriminate against false alarms. The system has the ability to replay up to 20 pings from memory for classification analysis.

The design of the system is implemented in ruggedized COTS hardware which can be either water-cooled or air-cooled. The Digital Processor Unit (DPU) is composed of a number of separate, dedicated processors connected with the redundant system-wide pair of Ethernet busses. Each processor within the DPU contains a multipurpose module set in a VME baseplate. Modules are designed in the 6U Eurocard format and are based on industry standards - many are available as third party off-the-shelf modules. All software is developed to DOD-STD-2167A requirement and a Raytheon standardized development methodology.

Raytheon Company: Sonar Systems

To enhance the on-board anti-surface/anti-submarine capabilities, the new LAMPS Mark III Helicopter System adds significantly to the ship's sensor and weapons delivery range. Although the ships were intended to operate the LAMPS-III ASW helicopter, FFG 7-35, as completed, lacked the equipment necessary to handle them.
The FFG-7 frigates underwent an extensive stern redesign to enable the ship to accommodate the LANPS-MK III helicopter, its hauldown system, and tne towed sonar system.
Beginning with the FY 79 ships (FFG 36 and later), helicopter support equipment was aboard on completion. The equipment was first installed in MCINERNEY (FFG 8), which was reconstructed, in 1981 at Bath Iron Works, to act as LAMPS-III/SH-60B Seahawk helicopter trials ship.

In preliminary design, the SQQ-23 sonar was selected as the FFG-7 hull-mounted sonar. The Navy, however, later decided to replace it with the AN/SQS-56 sonar. The decision to change to The decision to change to the AN/SQS-56 sonar was based on cost, space, and personnel considerations and the decision that add the capability to handle a second LAMPS helicopter. The AN/SQS-56 is a less costly, less effective system, which initially encountered serious developmental problems. The Navy upgraded the system to overcome its effectiveness and suitability deficiencies.

The primary threat to the FFG-7 and its escorted forces was Soviet submarines armed with both torpedoes and missiles. Overall protection, therefore, depended largely on the effectiveness of the FFG-7 frigate's anti-submarine warfare systems. Since the AN/SQS-56 sonar was a short-range active sonar, the ship depended on the development of towed sonar for longer-range submarine detections. Until the towed sonar was approved for service use, the FFG-7 frigates had to rely on the short-range AN/SQS-56 sonar. The improved AN/SQS-56 sonar underwent tests at sea in 1978. The test results indicated that it was operationally effective against its primary target and thus had been provisionally approved for service use pending determination of its reliability. However, since the system did not meet all of its operational performance criteria, a waiver was issued so production could begin. The Office of tne Secretary of Defense reviewed the resulrs of the follow-on test and evaluation in the fall of 1979 to confirm the operational suitability of the AN/SQS-56.

The Navy believed that the FFG-7 with the improved AN/SQS-56 sonar and two LAMPS MK-1 helicopters, operating in conjunction with other ASW forces, was an effective ASW platform. With towed sonar and a LAMPS-MK III, the FFG-7 was considerably more effective in prosecuting submarines at longer ranges.

FFG-7 OLIVER HAZARD PERRY-class Design

The AN/SQS-56 is a hull-mounted sonar developed as a company-funded product by Raytheon Electronic Systems for the US Navy's Oliver Hazard Perry-class frigates. The US Navy has provided the AN/SQS-56, via the Foreign Military Sales (FMS) programme, to a number of navies, with the designation DE 1160. The DE 1160, when configured with 36 kW transmitters, is identical to the AN/SQS-56. Outfitted with a VDS array and handling subsystem, it becomes Raytheon's DE 1164 sonar. The DE 1160, when equipped with a larger, low-frequency transducer array and three additional transmitter cabinets, is designated DE 1160LF and is capable of convergence zone performance. A VDS version of the DE 1160LF combines the convergence zone performance of the Garibaldi sonar with the environmental adaptability of the DE 1164 under the denomination DE 1164LF, as a sonar system for major ASW combatants. The AN/SQS-56 sonar features digital implementation, system control by a built-in mini-computer and an advanced display system. Digital implementation allows packaging of the complete multifunction active and passive sonar in five medium-size electronics cabinets and one operator's console. Computer-controlled functions provide a system which is extremely flexible and easy to operate. The computer is also used to provide automated fault detection and localisation and a built-in training capability. The human-engineered display ensures proper interpretation by operators, even by those with relatively low levels of training. Operating in the 6.7, 7.5 and 8.4 kHz bands with a bandwidth of 400 Hz the direct path DE 1160 operates in either

AN/SQS-56/DE 1160 Sonar (United States) - Jane's Underwater Warfare Systems

 

[Hammy007]

pakistan always gets old junk from US lol

 

[Peregrine]

pakistan always gets old junk from US lol

Hi
i was told by a navy officer that this old junk is still better than F-22p Frigates, i don't know why he said this but he told me this last year.

 

[Creder]

They should rename it to PNS VESPA

 

[sparklingway]

Pakistan to get US guided-missile frigate on Aug 31​

Wednesday, April 21, 2010

By Sami Abraham

WASHINGTON: Pakistan and United States signed a contract for the transfer of the guided-missile frigate USS McInerney here on Tuesday.

The contract will enable Pakistan to take over the USS McInerney at the US Naval station Mayport, Florida on August 31 this year, after which it will be commissioned as PNS Alamgir .A comprehensive refurbishment of the ship will be undertaken under the supervision of US Navy, which will be completed by January 2011.

Defence Procurement AttachÈ Captain Abdur Rehman inked the contract on behalf of Pakistan Navy. The successful culmination of this contract will also pave way for acquisition of more vessels of same class for the Pakistan Navy to raise a squadron of eight Perry-Class frigates. This will greatly enhance operational readiness of Pakistan Navy.

USS McInerney is the second ship of the Oliver Hazard Perry-Class of guided-missile frigates. In September 2008, the US Congress had approved provision of the frigate to Pakistan with a delivery date of August 2010. Citing the Foreign Assistance Act and the Arms Export Control Act, Pakistan is considered a major non-Nato ally and is able to receive older unneeded US military equipment. Additionally, the 32-year-old frigate will be given a $ 65 million refurbishment, including anti-submarine capability paid for with foreign military aid provided by the US to the friendly countries. Pakistan will pay $78 million for the frigate

 

[indushek]

Hi,

found this on wiki and another site about these frigates:

Wikipedia

The Oliver Hazard Perry class is a class of frigates named after the American Commodore Oliver Hazard Perry, the hero of the naval Battle of Lake Erie. Also known as the Perry or FFG-7 class, the warships were designed in the United States in the mid-1970s as general-purpose escort vessels inexpensive enough to be bought in large quantities to replace World War II-era destroyers. They operated in an anti-submarine role to protect amphibious landing forces, supply and replenishment groups, and merchant convoys.[1] Fifty-five ships were built in the United States: 51 for the United States Navy and four for the Royal Australian Navy (RAN). In addition, eight were built in the Republic of China (Taiwan), six in Spain, and two in Australia for their navies. Former U.S. Navy warships of this class have been sold or donated to the navies of Bahrain, Egypt, Poland, and Turkey.

The Oliver Hazard Perry-class ships were produced in 445-foot (136 meter) long "short-hull" (Flight I) and 453-foot (138 meter) long "long-hull" (Flight III) variants. The long-hull ships (FFG 8, 28, 29, 32, 33, and 36-61) carry the larger SH-60 Seahawk LAMPS III helicopters, while the short-hulled warships carry the smaller and less-capable SH-2 Seasprite LAMPS I. Aside from the lengths of their hulls, the principal difference between the versions is the location of the aft capstan: on long-hull ships, it sits a step below the level of the flight deck in order to provide clearance for the tail rotor of the longer Seahawk helicopters. The long-hull ships also carry the RAST (Recovery Assist Securing and Traversing) system for the Seahawk, a hook, cable, and winch system that can reel in a Seahawk from a hovering flight, expanding the ship's pitch-and-roll range in which flight operations are permitted. The FFG 8, 29, 32, and 33 were built as "short-hull" warships but were later modified into "long-hull" warships.

Naval-technology.com

The United States Navy has 30 Oliver Hazard Perry Class guided missile frigates remaining in service of the 50 built for the US Navy during the 1970s and 1980s. The frigates have a full load displacement of 4,100t. The maximum speed is 30kt and the range at an economical speed is 4,500nm.

The frigates were built by Bath Iron Works (24) in Maine and Todd Shipyards (29) in Seattle and San Pedro, California. Oliver Hazard Perry (FFG 7) entered service in December 1977. The last USN vessel, USS Ingraham (FFG 61) was commissioned in August 1989.Four ships (FFG 17, 18, 35 and 44) were built for Australia. Australia ordered an additional two new Perry Class ships built by the Williamstown Naval Dockyard (now part of Tenix Defence) – HMAS Melbourne (FFG 05) commissioned in 1992 and HMAS Newcastle (FFG 05) commissioned in 1993.

Six Santa Maria Class frigates built by Bazan (now Navantia) for the Spanish Navy and eight Chen Kung class built by China SB for Taiwan were built to the Perry Class design. A number of ships have been decommissioned and transferred to other countries: Bahrain (one), Egypt (four), Poland (two) and Turkey (nine).

In October 2008, the US Government approved the transfer of USS McInerney (FFG-8) to the Pakistan Navy. It is scheduled for handover in August 2010.

Command and control

The frigates' combat data system is the naval tactical data system (NTDS).

The Perry Class weapon control system is the Mark 92 FCS which provides X-band radar surveillance integrated with target tracking and fire control for the guns and missile systems. Lockheed Martin is the design agent for the mk92 FCS which is a US derivative of the Thales Netherlands Signaal WM28 fire control system.

Guns

The ship's main gun is the Oto Melara mk75, 76mm naval gun which fires 6kg anti-aircraft shells to a range of 12km and anti-surface ship rounds to 16km.

The close-in-weapon system is the Raytheon mk15 block 1B Phalanx six-barrel 20mm gun. The CIWS fires 4,500 rounds a minute to a range of 1.5km. Phalanx provides short-range defence against surface and airborne incoming threats including high-speed surface craft.

The ships carry four general-purpose 12.7mm machine guns and can be fitted with 25mm mk38 guns supplied by Boeing.

Missiles

The US ships' surface-to-air and surface-to-surface missiles were removed in 2004 but the ship supports Penguin-missile-armed LAMPS III helicopters.

Other nations' Perry Class frigates retain the missile system capability with the Boeing Harpoon surface-to-surface missiles and Raytheon Standard SM-1MR surface-to-air missiles.

Torpedoes

Torpedoes are fired from two deck-mounted mk32 triple-tube torpedo tubes. The ship's torpedoes are the Alliant Techsystems (ATK) mk46 mod 5 lightweight anti-submarine torpedoes and the ATK mk50 torpedo. The mk46 mod 5 has a range of 11km. The torpedo is armed with a 44kg warhead and uses passive and active homing to approach the target at a speed of 40kt.

The mk50 torpedo is armed with a 45kg shaped charge warhead and has a range of 15km. The torpedo uses active and passive homing and has a speed of 50kt.

Aircraft

The ship accommodates two Sikorsky SH-60B LAMPS III Seahawk helicopters. The ship has two hangars and a 410m² helicopter deck fitted with a single landing spot and a RAST recovery assist securing and traversing system. The ship is equipped to support LAMPS (light airborne multipurpose system) missions.

The ship's AN/URN-25 TACAN tactical air navigation transponder provides aircraft with data on range, bearing and identification. The IFF interrogator is the mkXII AIMS UPX-29.

The SH-60B LAMPS mkIII helicopter has all weather capability for point defence against submarines and surface ships, and can also carry out fleet support, vertical replenishment, search and rescue and medical evacuation.

Countermeasures

The Perry Class frigates have two deck-mounted six-barrelled SRBOC mk36 decoy dispensers. The Lockheed Martin Sippican super rapid bloom offboard countermeasures SRBOC mk36 launches infrared and chaff flares to counter electro-optically and radar guided missiles and fire control systems.

The Perry Class is also fitted with the BAE Systems Australia mk53 Nulka active expendable decoys for protection against radar-guided anti-ship missiles. Nulka is rocket-propelled and operates over a broad radio band.

The torpedo decoys are the older T-Mk 6 Fanfare towed decoy or the Argon ST SLQ-25 Nixie towed decoy.

The Perry Class frigates are equipped with the Raytheon SLQ-32(V)2 radar warning and jamming electronic warfare system. The AN/SLQ-32(V) detects hostile radar emissions and analyses the pulse repetition rate, scan mode, scan period, and frequency. The system identifies the threat and direction, provides a warning signal, interfaces to the ship's countermeasures systems and jams the hostile radar systems.

Sensors

The ship's radar suite includes the Raytheon SPS-49(V)5 or (V)4 air search radar which operates over C and D bands. The radar detects aircraft to a range of 460km. The surface search radar is the ISC Cardion SPS-55 radar operating at I-band.

The Oto Melara mk75 gun is linked to the Sperry 92 fire control radar operating at I and J bands. The Furuno navigation radar also operates at I band.

Sonar
The ship is fitted with a AN/SQQ-89 (CV)2 anti-submarine warfare (ASW) combat system. The system integrates a Raytheon SQS-56 active and passive hull-mounted sonar and a Gould SQR-19 towed sonar array. The system displays the data from the sonar suite and from the helicopter LAMPS sensors and provides detection, classification, designation and targeting of submarines.

Propulsion

The propulsion system is based on two GE LM 2500 gas turbine engines generating 30.59MW (41,000shp) and driving a single shaft with a constant pitch propeller. There are two auxiliary retractable propellers (484kW / 650hp) for manoeuvring and station keeping.

 

[indushek]

Seems to me that these are not such a bad buy afterall. PN would be getting anti sub warfare boats right

 

[Penguin]

Mods: please merge with other pre-existing thread on this topic.

 

[fatman17]

Wondering what accounts for the 78-65=$13 million difference between transfer payment and refurb-price: what else is in the contract?

Also note the talk of a squadron of 8 FFGs of the OHP variety

the FFG sans weapons and sensors is FOC.
65m is the cost of re-fit of weapons and sensors as per PN requirement.
these ships have the best marine power-plants with long service-levels.

 

[Justin Joseph]

Pakistan needs these platforms to cover its 850 miles of naval boundary... these ships will form hunter killer pair of 2 resulting in 4 pairs or oliver and then 2 pairs for F22P to cover vast pakistani coast lines from any incursions by subs... very powerful system with a great potential to detter any kilo base assualt on pakistan maritimes during a war situation.. It also will form first line of defence against any sea based air attacks by IN or indian airforce.. more eyes on our coast before anyone reaches pakistani coasts for strategic strikes...
This will further make sure that there is no such thing as naval blockade by indian navy for vital oil supply for Pakistan. Inturn, these ships will be employed to block any weapon or oil supply bound for indian coast during the war from persian gulf and even from Suez canal....

As we can see, there are 3 different ways OHP can protect pakistans sea based interest during war.

its range is 9000kms, airsearch radar covering 400kms radius, half a million square kilometers and surface radar of 100 kms roughly radius esentially 31 thousand sq kms.. i am not sure about the sonar AN-SQS56 which orginally comes with it...

No need to bring India into this, its about PN.

You don't gonna rule the world with this are u?? So stop thinking about blocking Indian supply.

Do u even know where the "Suez canal" is???

BTW in the past it was sitting duck for Iraqi warplanes so don't worry Indian Navy will easily take care of it.

 

[razgriz19]

Hi
Other than Oliver Hazard Perry class?

nope, it is perry class..

 

[razgriz19]

for US, its just another way to make $..

 

[Dark Angel]

Pakistan will pay $78 million for 30 year old frigate.......... i think pakistan is capable of making frigates at least if it can build fighter jets

 

[maverick1977]

First of all, indushek and Penguin thanks for sharing more info on OHP.

Justin i should have been more careful with my wordings.. i was referring to gulf of aden which is an opening of Suez canal. it lies 1500 ~ 1800 kms away from Gawadar port. This will give OHP an easy access to that area with its 9000km strike range. In case of war, i am hypothetically talking about a potential conflict between india and pakistan as Pakistan can use this as a strike route for any indian bound ships... Having force multipliers like OHP along with sub combination Pakistan navy can possess a huge striking element in Arabian sea, persian gulf area... The only need is to have strong air defense systems on this ships to make is a formidable force.. If not refulers can extend the range of any aircover for surface fortilla.

As i mentioned earlier these ships can be employed in hunter killer pairs and complemented with tertiary systems like a submarine in this zone, Indian supply lines will be in a serious trouble in case of war between india and pakistan.

I am sure in a prolonged conventional conflict india will be living on its reserves as nothing will be able to pass through from western side of the indian ocean unless taken a route over atlantic to indian ocean over africa.

 

[desiman]

buying old junk refurb and use what totally non-sense! paying heavy cost!!

buying mercedes expensive - expensive homes ... in UK USA and pakistan spending money on useless stuff by our leaders and officals and for Country defence buying oldy junk!!!

i second that, this ship is way to old, even with refit it will only last a max 5-10 years, and even thats pushing it. PN would be way better off get new ships from China.