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F-490 TCG Gaziantep, a G class (upgraded O. H. Perry class) frigate of the Turkish Navy, in Cartagena, Spain.
Class overview
Name	G class
Operators	Turkish Navy
Completed	8
Active	8
General characteristics
Type	Frigate
Displacement	4,100 long tons (4,166 t) full load
Length	135.6 m (444 ft 11 in)
Beam	13.7 m (44 ft 11 in)
Draught	6.7 m (22 ft 0 in)
Propulsion	list error: <br /> list (help) 2 × GE LM 2500 gas turbines, 41,000 hp (31 MW) 1 propeller and 2 × bow thrusters
Speed	30 knots (56 km/h; 35 mph)
Range	5,000 nmi (9,300 km) at 18 kn (33 km/h)
Complement	222 (19 officers, 203 men)
Sensors and processing systems	list error: <br /> list (help) Combat Management System: GENESIS (Gemi Entegre Savaş İdare Sistemi) Search radar: SMART-S Mk2
Armament	list error: <br /> list (help) 1 × Mk 15 Phalanx CIWS 1 × Oto Melara 76mm DP gun 8 × Harpoon SSM 32 × SM-1 MR SAM 32 × ESSM launched from Mk-41 VLS (4 ESSM missiles per MK-41 cell through the use of MK25 Quadpack canisters, total of 8 cells)
Aircraft carried	1 × S-70B Seahawk or AB-212 (ASW/ASuW/EW)

The G class (Turkish: Gabya sınıfı fırkateyn(ler)) is one of the frigate classes of the Turkish Navy. They are extensively modernized versions of ex-Oliver Hazard Perry class guided-missile frigates, mainly designed for air defense with a weapons configuration that is optimized for general warfare.

Modernization

The G class frigates have undergone a major modernization program which included the retrofitting of a Turkish digital combat management system named GENESIS (Gemi Entegre Savaş İdare Sistemi). The system was designed and implemented jointly by the Turkish Navy and Havelsan, a Turkish electronic hardware systems and software company. The first GENESIS upgraded ship was delivered in 2007, and the last delivery is scheduled for 2011.

The GENESIS advanced combat management system includes the following characteristics and abilities:

• A modern and reliable system
• High performance
• Open architecture
• Capacity of tracking more than 1,000 tactical targets
• Modern digital sensor data fusion
• Automatic threat evaluation
• Weapon engagement opportunities
• Link-16/22 system integration

The modernization program also includes:

• The addition of an 8-cell Mk-41 VLS for Evolved Sea Sparrow, including the upgrade of the Mk-92 fire control system by Lockheed Martin
• The retrofitting of a new advanced SMART-S Mk2 3D air search radar to replace AN/SPS-49
• The addition of a new long range sonar

The Mk-41 VLS will be fitted in front of the Mk.13 launchers, similar to their installation on the Adelaide-class frigates of the Royal Australian Navy, which are Australian-built derivatives of the Oliver Hazard Perry class frigates. F-495 TCG Gediz became the first ship in the class to receive the Mk 41 VLS installation.

The "short hull" ex-Perry class frigates that are currently being operated by the Turkish Navy were modified with the ASIST landing platform system at the Istanbul Naval Shipyard, so that they can accommodate the S-70B Seahawk helicopter.

Ships

• TCG Gaziantep (F-490) ex-USS Clifton Sprague (FFG-16)
• TCG Giresun (F-491) ex-USS Antrim (FFG-20)
• TCG Gemlik (F-492) ex-USS Flatley (FFG-21)
• TCG Gelibolu (F-493) ex-USS Reid (FFG-30)
• TCG Gökçeada (F-494) ex-USS Mahlon S. Tisdale (FFG-27)
• TCG Gediz (F-495) ex-USS John A. Moore (FFG-19)
• TCG Gökova (F-496) ex-USS Samuel Eliot Morison (FFG-13)
• TCG Göksu (F-497) ex-USS Estocin (FFG-15)

See also

• List of major surface ships of the Turkish Navy

References

1. Ship Integrated Combat Management System (GENESIS), Undersecretariat for Defence Industries, Turkey
2. http://www.ssm.gov.tr/TR/duyurular/basinaciklamalari/Documents/ssmicrakurulubasinaciklamasi.pdf
3. Turkishnavy.net: First Turkish Perry With Mk-41 VLS
4. Lockheed Martin to Upgrade Ship Defense System on Turkish Navy Frigates, Lockheed Martin, 17 February 2009
5. Ship Integrated Combat Management System (GENESIS), Undersecretariat for Defence Industries, Turkey
6. http://www.raytheon.com/businesses/rtnwcm/groups/public/documents/content/rtn09_bus_genesis_pdf.pdf
7. GENESIS project, Turkish Navy
8. http://www.afcea.org/signal/articles/anmviewer.asp?a=2387&print=yes SIGNAL Article
9. Ship Integrated War Administration System (Genesis)
10. http://www.bizjournals.com/albuquerque/stories/2009/02/16/daily15.html
11. http://www.ssm.gov.tr/TR/duyurular/basinaciklamalari/Documents/ssmicrakurulubasinaciklamasi.pdf
12. MK 41 Naval Vertical Missile Launch Systems Delivered
13. US approves $227 mln Lockheed arms sale to Turkey
14. Turkishnavy.net: First Turkish Perry With Mk-41 VLS

External links

• Official Turkish Navy Website
• Turkish Navy
• Turkishnavy.net: First Turkish Perry with the Mk-41 VLS

v t e Oliver Hazard Perry-class frigates
United States Navy	Oliver Hazard Perry McInerney Wadsworth Duncan Clark George Philip Samuel Eliot Morison Sides Estocin Clifton Sprague John A. Moore Antrim Flatley Fahrion Lewis B. Puller Jack Williams Copeland Gallery Mahlon S. Tisdale Boone Stephen W. Groves Reid Stark John L. Hall Jarrett Aubrey Fitch Underwood Crommelin Curts Doyle Halyburton McClusky Klakring Thach De Wert Rentz Nicholas Vandegrift Robert G. Bradley Taylor Gary Carr Hawes Ford Elrod Simpson Reuben James Samuel B. Roberts Kauffman Rodney M. Davis Ingraham
Royal Australian Navy Adelaide class	Adelaide Canberra Sydney Darwin Melbourne Newcastle
Republic of China Navy Cheng Kung class	Cheng Kung Cheng Ho Chi Kuang Yueh Fei Tzu I Pan Chao Chang Chien Tian Dan
Spanish Navy Santa María class	Santa María Victoria Numancia Reina Sofía Navarra Canarias
Other operators  Royal Bahrain Naval Force Sabha (ex-Jack Williams) Khalid Bin Ali (ex-Robert G. Bradley)  Egyptian Navy Mubarak class / Alexandria class Sharm El-Sheik (ex-Fahrion) Toushka (ex-Lewis B. Puller) Mubarak / Alexandria (ex-Copeland) Taba (ex-Gallery)  Pakistan Navy Alamgir (ex-McInerney)  Polish Navy Gen. K. Pułaski (ex-Clark) Generał Tadeusz Kościuszko (ex-Wadsworth)  Turkish Naval Forces G class Gaziantep (ex-Clifton Sprague) Giresun (ex-Antrim) Gemlik (ex-Flatley) Gelibolu (ex-Reid) Gökçeada (ex-Mahlon S. Tisdale) Gediz (ex-John A. Moore) Gökova (ex-Samuel Eliot Morison) Göksu (ex-Estocin)  Republic of China Navy Ming Chuan (ex-Taylor) Feng Jia (ex-Gary)
Preceded by: Knox class Followed by: Constellation class
List of frigates of the United States Navy List of frigates of the Royal Australian Navy List of frigates of the Republic of China Navy List of frigates of the Spanish Navy

v t e  Ship classes of the Turkish Navy
Aircraft carriers	MUGEM class
Amphibious assault ships	TCG Anadolu class
Destroyers	TF2000 class
Frigates	Barbaros class Yavuz class G class Istanbul class
Corvettes	Ada class Burak class
Submarines	Gür class Preveze class Atılay class Reis class
Fast attack crafts	Kılıç class Yıldız class Rüzgar class Doğan class Kartal class
Mine warfare ships	A-class minehunter E-class minehunter F-class minesweeper S-class minesweeper K-class minesweeper
Main landing ships	Osman Gazi class SarucaBey class Ertuğrul-class LST LPD class
Landing craft	Ç-117-class LCT Ç-302-class LCM
Replenishment oiler	Akar class
Patrol boat	Tuzla class Hisar class
Surface ships Submarines Patrol vessels Amphibious vessels Mine warfare vessels Miscellaneous ships

• G-class frigates
• Frigate classes