İstif-class frigate

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File:TCG İstanbul (F-515) (cropped).jpg
TCG Istanbul (F-515) at the Bosporus strait, during the naval parade for celebrating the centennial of the Turkish Republic, 29 October 2023.
Class overview
Nameİstif class
BuildersIstanbul Naval Shipyard
Operators
Preceded byBarbaros class
Cost$500 million per unit
Built2017–present
In commission2024–present
Planned8
Building5
Completed3
Active1
General characteristics
TypeMultirole frigate
Displacement3,100 tonnes
Length113.2 m (371 ft 5 in)
Beam14.40 m (47 ft 3 in)
Draft4.05 m (13 ft 3 in)
Installed power4 x 560kw Generator[1]
Propulsion
  • 1 x GE LM2500 Gas turbine[1]
  • 2 x 5.766HP MTU Diesel Machine[1]
  • 2 x Controllable Pitch Propeller (CPP)[1]
Speed
  • Economy: 14 kn (26 km/h; 16 mph)
  • Maximum: 29 kn (54 km/h; 33 mph)
Range5,700 nmi (10,600 km; 6,600 mi) at 14 kn (26 km/h; 16 mph)[1]
Boats & landing
craft carried
2 x RHIB
Complement123[1]
Sensors &
processing systems
  • Radars: Cenk-400N 4D AESA search radar, ASELSAN ALPER-200N LPI Surface Radar, AKREP-300N (AKR-D Block B-1/2) Fire Control Radar,[2]
  • Systems: TAKS-100/76GFCS main gun fire control system, ATMACA 100/AFCS anti-ship missile fire control system, HİSAR 100N/FCS air defence missile fire control system, KULAÇ Sounder system, DEMES meteorological measurement system, AHTAPOT-100 Electro-optical director, PIRI-100 IRST, ANS 510-M gyro system,[3] LIAS 200-N Advanced Laser Warning Receiver System,[1] Infrared Trace Management System,[1] SeaEye-AHTAPOT EO Reconnaissance and Surveillance system[2]
  • Sonar: FERSAH 100N/MF hull mounted sonar[2]
  • Communications: SATCOM, Link 11/16, Link 22 Local Area Network, Internal Communication System, Underwater phone[1][4]
  • Combat Systems: ADVENT Combat Management system,[1] GEMS Integrated combat system, IdentIFF M5 TPX & I/LR IFF system, AcroSAT Ku-120-M Satellite combat system, AcroSAT Ku-150-M Satellite combat system[5]
Electronic warfare
& decoys
  • ESM: ASELSAN ARES 2N/NGE[6]
  • ECM: AREAS 2NC/E[6]
  • ARES-NEWS Central management system
  • Decoy: Aselsan HIZIR Torpedo countermeasures system[6]
  • KARTACA-N Decoy ejection system[7]
Armament
Aircraft carried

The Istif-class frigates are a group of eight[11] multirole frigates currently being constructed for the Turkish Naval Forces.[12] Developed under the MILGEM national warship program as the I-class frigate, the Istanbul class is an enlarged version of the Ada-class anti-submarine corvette, with enhanced endurance and MIDLAS Vertical Launching System (VLS) for multi-role capability.[6]

On 19 January 2017, Turkish Navy held a ceremonial steel cut for the lead ship TCG Istanbul (F 515).[13] Istanbul was laid down on 3 July 2017 and launched on 23 January 2021.[14][6]

History and background

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The Istif class has its origins in the Turkish MILGEM project for developing national warships and warship building industry. The program calls for the construction of a warship family in three classes, where all vessels would be designed with high degree of commonality. First product of the project emerged as Ada-class anti-submarine/patrol corvette. The Istanbul class, originally known as the TF-100 class under MILGEM-G designation, belongs to the second development phase, where structure of the Ada class vessel is extended to host multi-role capabilities.[citation needed]

Design

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File:Scale model of TCG İstanbul (F-515).jpg
Model of TCG Istanbul (F-515)

The Istif class[15] is an enlarged variant of the Ada class and will feature a slightly larger hull for improved endurance. In addition to retaining the guns, self protection and anti-submarine warfare systems of the Ada class,[16] the Istif class will have twice the number of anti-ship missiles[16] and will be equipped with the indigenous MDAS vertical launching system,[6] capable of firing HISAR and other missiles, along with other systems for improved multi-role combat capabilities. The experience and technological know-how gained with the Istanbul class will play an important role in determining the design characteristics and the development process of the TF-2000-class destroyers, as well as the selection of the systems and equipment which will be used on these significantly larger and more capable warships.[citation needed]

The first ship of the class, TCG Istanbul, was laid down on 19 January 2017. The fifth and largest modern warship to be both indigenously designed and built in Turkey, it is claimed that at least 75% of its systems will be of indigenous manufacture.[17] Its steel cutting ceremony was attended by Turkish Defence Minister Fikri Işık and senior military officers, including Admiral Bülent Bostanoğlu, Commander of the Turkish Naval Forces.[citation needed]

Construction took six years and the vessel was commissioned into service on 19 January 2024.[18][19]

Export

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It was stated in Aselsan 2023 Annual report that İstif-class frigate was exported to an unnamed Middle Eastern country.[20]

Indonesian shipyard PAL Indonesia signed a memorandum of understanding with TAIS Shipyards on procuring İstif-class frigate in June 2025. Minister of Defense of Indonesia signed procurement contract for two frigates on 26 July 2025.[21]

Ships in the class

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File:TCG Istanbul.jpg
TCG Istanbul (F-515), the lead ship of Turkish Navy's Istif-class multipurpose frigates, as it traverses the Bosphorus in celebration of the 100th year of the Republic of Türkiye.
Pennant no. Name Namesake Builder Launched Commissioned Status Note
F-515 TCG Istanbul Istanbul Istanbul Naval Shipyard 23 January 2021 19 January 2024 In service [22]
F-516 TCG İzmir İzmir Anadolu Shipyard 10 January 2025 Planned Launched[23]
F-517 TCG İzmit İzmit Sedef Shipyard 11 January 2025 Planned Launched[24]
F-518 TCG İçel İçel Sefine Shipyard 1 September 2025 Planned Launched[25]
F-519 TCG Akdeniz Mediterranean Sea Anadolu Shipyard Planned Under Construction[26]
F-520 TCG Karadeniz Black Sea Sedef Shipyard Planned Under Construction[27]
F-521 TCG Ege Ege Sefine Shipyard Planned [28]
F-522 TCG Marmara Marmara Anadolu Shipyard Planned

See also

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References

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Error creating thumbnail: File missing Media related to Lua error in Module:Commons_link at line 62: attempt to index field 'wikibase' (a nil value). at Wikimedia Commons