Engineering:Aselsan GOKDENIZ

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Short description: Turkish anti-aircraft gun
GOKDENIZ
2022-04-27 Gokdeniz 001.jpg
Scale model in 2022
TypeClose-in weapon system
Place of originTurkey
Production history
DesignerAselsan
ManufacturerAselsan
Produced2019-Present
Specifications
Shell35×228mm ATOM, 35×228mm HEI-T
Shell weightATOM 35mm: 1.750 kg (3 lb 14 oz)[1][2]
HEI-T: 1.565 kg (3 lb 7 oz)
Calibre35 mm (1.38 in)
Barrels2
ActionGas-operated[3]
Traverse360°
Rate of fire1100 rpm (2 x 550 rpm)[4]
Muzzle velocityATOM 35mm: 1,020 m/s (3,300 ft/s)[1][2]
HEI-T: 1,175 m/s (3,850 ft/s)
Effective firing range4,000 metres (13,000 ft)[1][2]
Feed systemAutomatic linkless[4]

The GOKDENIZ (Turkish: Aselsan Gökdeniz) complex along with Aselsan ATOM 35mm[1][2] airburst ammunition is an all-weather-capable Turkish 35 mm dual barrel close-in weapon system (CIWS) developed by Aselsan.[4][5] It is a CIWS variant of KORKUT Self-propelled anti-aircraft gun.[6][7]

Each GOKDENIZ platform carries a variant of Oerlikon 35 mm twin cannon, manufactured under licence by MKEK.[7] The CIWS system, sensors and electronics manufactured by Aselsan. The CIWS can fire up to 1100 rounds a minute up to an effective range of 4 km.[4][7]

Purpose

The system's primary purpose is to defend against anti-ship missiles, unmanned aerial vehicles and other precision-guided munitions. It can also be employed against conventional and rotary-wing aircraft, surface ships, small water-crafts, coastal targets and floating mines.[6][1][2]

Ammunition

The cannons fire 35×228 mm Aselsan ATOM 35mm airburst round and high-explosive incendiary (HEI) ammunition.[5][2]

In the anti-missile role it uses ATOM 35mm airburst ammunition from Aselsan. This round ejects tungsten pellets at a predetermined distance. It is a smart ammunition which has a base fuse. Together with the ability of precise time counting and the capability of being programmed during firing by taking muzzle velocity into consideration automatically sets the fuse to detonate the round as it approaches a pre-set distance from the target.[1][2] Whilst a single pellet is too small to do major damage in itself, the accumulation of damage from multiple strikes is designed to destroy wings and control surfaces, sensors and aerodynamics, causing the target to crash. According to Aselsan, the ammunition is resistant against electromagnetic jamming.[1][2] On the other hand, HEI ammunition designed to impart energy and therefore damage to its target in one or both of two ways: via a high-explosive charge and/or via its incendiary (fire-causing) effects. They caused fires, which on ships can be difficult to extinguish.

The system allows loading of both ammunition at the same time and it can switch between ammunition type with automatic linkless ammunition feed mechanism when needed during the operation.[4]

Variant

GOKDENIZ ER

This is a further variation of the GOKDENIZ close-in weapon system. It was one of the two point-defense weapon systems from Turkey presented during the International Defense Exhibition and Fair (IDEF) 21. The GOKDENIZ-ER will operate independently of ship sensors and systems, be armed with 11 missiles, and provide 360-degree coverage through AESA radar and electro-optical sensors.[8]

The system is still under development. It be developed independently of ROKETSAN's Levent system, and is seen as an alternative to SeaRAM Block-2. The system will have less missiles than Levent, but the missiles will be larger. Because of the involvement of TÜBTAK-SAGE in the project, it is expected that the surface-to-air version of the Bozdogan missile, an indigenous air-to-air missile produced by TÜBTAK-SAGE, will be preferred. Nonetheless, the possibility of employing a more powerful and larger version of the SUNGUR Missiles is also being considered.[8]

Operators

Current Operator

Turkmenistan Turkmenistan

  • Turkmenistan Turkmen Naval Forces: Use on Turkmen-class corvettes[9][10]

 Turkey

Future Operators

 Pakistan

 Philippines

 Ukraine

Similar

  • Oerlikon Millennium 35 mm Naval Revolver Gun System—comparable Swiss-German system
  • Nächstbereichschutzsystem MANTIS ground-based C-RAM by Rheinmetall using same gun
  • Oerlikon 35 mm twin cannon earlier system using AHEAD rounds
  • Denel 35mm Dual Purpose Gun comparable South African CIWS
  • Polish PIT-RADWAR OSU-35K 35mm Naval Gun System single barrel CIWS[14]
  • Polish PIT-RADWAR AG-35 and A-35 35mm Ground based anti aircraft Gun System single barrel.[15]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "ATOM 35mm Airburst Ammunition". Aselsan. https://aselsan.com.tr/en/capabilities/land-and-weapon-systems/smart-munition-and-active-protection-systems/atom-35mm-airburst-ammunition. Retrieved 8 July 2021. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 "ATOM". Aselsan. https://www.aselsan.com.tr/ATOM_35_mm_Air_Burst_Ammunition_4236.pdf. Retrieved 8 July 2021. 
  3. ↑ Friedman, Norman (1997–1998). "Oerlikon 35mm (Type GDM-A and GDM-C)". The Naval Institute Guide to World Naval Weapons Systems, 1997–1998. Annapolis, Md.: Naval Institute Press. p. 455. ISBN 978-1-55750-268-1. https://books.google.com/books?id=l-DzknmTgDUC&pg=PA431. Retrieved July 8, 2021. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 "GOKDENIZ". Aselsan. https://www.aselsan.com.tr/GOKDENIZ_CloseIn_Weapon_System_1178.pdf. Retrieved 8 July 2021. 
  5. ↑ 5.0 5.1 "WEAPONS and TURRETS for NAVAL PLATFORM: GOKDENIZ". TURKISH DEFENCE INDUSTRY PRODUCT CATALOGUE. https://www.ssb.gov.tr/urunkatalog/en/106/. 
  6. ↑ 6.0 6.1 "KORKUT Self Propelled Air Defense Gun System". https://www.aselsan.com.tr/en/capabilities/air-and-missile-defense-systems/self-propelled-and-air-burst-munition/korkut-self-propelled-air-defense-gun-system. 
  7. ↑ 7.0 7.1 7.2 "GUNS and HOWITZERS: 35MM TWIN BARREL ANTI AIRCRAFT GUN". TURKISH DEFENCE INDUSTRY PRODUCT CATALOGUE. https://www.ssb.gov.tr/urunkatalog/en/238/. 
  8. ↑ 8.0 8.1 "IDEF 2021: Turkish Companies Unveil Indigenous RAM Replacements". 24 August 2021. https://www.navalnews.com/naval-news/2021/08/idef-2021-turkish-companies-unveil-indigenous-ram-replacements/. 
  9. ↑ "IDEF 2021: Turkish weapon systems debut on new Turkmenistan corvette - Shephard Media" (in en). https://www.shephardmedia.com/news/naval-warfare/idef-2021-turkish-weapon-systems-debut-new-turkmen/. 
  10. ↑ Ozberk, Tayfun (2021-08-16). "Turkmenistan Comission [sic Its First Turkmen-Class Corvette "Deniz Han""] (in en-US). https://www.navalnews.com/naval-news/2021/08/turkmenistan-comissions-its-first-turkmen-class-corvette-deniz-han/. 
  11. ↑ Ozberk, Tayfun (2021-01-23). "Turkey launches the lead ship of I-class frigates "Istanbul"" (in en-US). https://www.navalnews.com/naval-news/2021/01/turkey-launches-the-lead-ship-of-i-class-frigates-istanbul/. 
  12. ↑ "Aselsan Secures €176.9 m Contract for Pakistan's MILGEM Corvette Program" (in en-US). 2019-11-18. https://quwa.org/2019/11/18/aselsan-secures-e176-9-m-contract-for-pakistans-milgem-corvette-program/. 
  13. ↑ "Корвет "Гетьман Іван Мазепа" (F211) - майбутній флагман ВМСУ (Тарас Чмут, 5 жовтня 2022)" (in uk). 2022-10-05. https://www.youtube.com/watch?v=4eX_Q0J1WBk. Retrieved 2022-10-05. 
  14. ↑ "OSU-35K 35mm Naval Armament System | PIT-RADWAR". https://en.pitradwar.com/oferta/635,am-35-35mm-naval-gun-system. 
  15. ↑ "AG-35 35mm Anti aircraft Gun System | PIT-RADWAR". https://en.pitradwar.com/oferta/631,a-35-ag-35-towed-anti-aircraft-35mm-gun. 



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