Aselsan GOKDENIZ
{{short description|Turkish anti-aircraft gun}}
{{Infobox weapon
| name = GOKDENIZ
| image = 2022-04-27 Gokdeniz 001.jpg
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| caption = Scale model in 2022
| type = Close-in weapon system
| origin = Turkey
| is_ranged = yes
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| is_artillery = yes
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| designer = Aselsan
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| manufacturer = Aselsan
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| production_date = 2019-Present
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| cartridge = 35×228mm ATOM, 35×228mm HEI-T
| cartridge_weight = ATOM 35mm: {{convert|1.750|kg|lboz|abbr=on|sigfig=1}}
HEI-T: {{convert|1.565|kg|lboz|abbr=on|sigfig=1}}
| caliber = 35 mm (1.38 in)
| barrels = 2
| action = Gas-operated{{cite book |title=The Naval Institute Guide to World Naval Weapons Systems, 1997–1998 |chapter=Oerlikon 35mm (Type GDM-A and GDM-C) |last=Friedman |first=Norman |year=1997–1998 |publisher=Naval Institute Press |location=Annapolis, Md. |isbn=978-1-55750-268-1 |page=455 |chapter-url=https://books.google.com/books?id=l-DzknmTgDUC&pg=PA431 |access-date=July 8, 2021}}
| rate = 1100 rpm (2 x 550 rpm)
| velocity = ATOM 35mm: {{convert|1020|m/s|abbr=on}}
HEI-T: {{convert|1175|m/s|abbr=on}}
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| traverse = 360°
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| primary_armament = 35 mm dual-barrelled autocannon
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The GOKDENIZ ({{langx|tr|Aselsan Gökdeniz}}) complex along with Aselsan ATOM 35mm{{cite web|url=https://aselsan.com.tr/en/capabilities/land-and-weapon-systems/smart-munition-and-active-protection-systems/atom-35mm-airburst-ammunition|title = ATOM 35mm Airburst Ammunition|publisher= Aselsan |accessdate= 8 July 2021}}{{cite web|url=https://www.aselsan.com.tr/ATOM_35_mm_Air_Burst_Ammunition_4236.pdf|title = ATOM|publisher= Aselsan |accessdate= 8 July 2021}} airburst ammunition is an all-weather-capable Turkish 35 mm dual barrel close-in weapon system (CIWS) developed by Aselsan.{{cite web |url=https://www.aselsan.com.tr/GOKDENIZ_CloseIn_Weapon_System_1178.pdf|title = GOKDENIZ|publisher= Aselsan |accessdate= 8 July 2021}}{{cite web|url= https://www.ssb.gov.tr/urunkatalog/en/106/|title= WEAPONS and TURRETS for NAVAL PLATFORM: GOKDENIZ|publisher= TURKISH DEFENCE INDUSTRY PRODUCT CATALOGUE|access-date= 8 July 2021|archive-date= 22 November 2019|archive-url= https://web.archive.org/web/20191122030313/https://www.ssb.gov.tr/urunkatalog/en/106/|url-status= dead}} It is a CIWS variant of KORKUT Self-propelled anti-aircraft gun.{{cite web|url=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|title=KORKUT Self Propelled Air Defense Gun System|website=Aselsan}}{{cite web|url= https://www.ssb.gov.tr/urunkatalog/en/238/|title= GUNS and HOWITZERS: 35MM TWIN BARREL ANTI AIRCRAFT GUN|publisher= TURKISH DEFENCE INDUSTRY PRODUCT CATALOGUE|access-date= 8 July 2021|archive-date= 27 January 2020|archive-url= https://web.archive.org/web/20200127143920/https://www.ssb.gov.tr/urunkatalog/en/238/|url-status= dead}}
Each GOKDENIZ platform carries a variant of Oerlikon 35 mm twin cannon, manufactured under licence by MKEK. 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.
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.
Ammunition
The cannons fire 35×228 mm Aselsan ATOM 35mm airburst round and high-explosive incendiary (HEI) ammunition.
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. 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.
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.
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.{{cite web |url=https://www.navalnews.com/naval-news/2021/08/idef-2021-turkish-companies-unveil-indigenous-ram-replacements/ |title=IDEF 2021: Turkish Companies Unveil Indigenous RAM Replacements |website=Naval News |date=24 August 2021 |access-date=24 August 2021}}
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.
Operators
Current Operators
- {{navy|Turkey}}: Used on Istanbul-class frigates and Barbaros-class frigates
- {{navy|Turkmenistan}}: Used on Turkmen-class corvettes{{Cite web|title=IDEF 2021: Turkish weapon systems debut on new Turkmenistan corvette - Shephard Media|url=https://www.shephardmedia.com/news/naval-warfare/idef-2021-turkish-weapon-systems-debut-new-turkmen/|access-date=2021-09-01|website=www.shephardmedia.com|language=en}}{{Cite web|last=Ozberk|first=Tayfun|date=2021-08-16|title=Turkmenistan {{sic|Co|missions|nolink=y}} Its First Turkmen-Class Corvette "Deniz Han"|url=https://www.navalnews.com/naval-news/2021/08/turkmenistan-comissions-its-first-turkmen-class-corvette-deniz-han/|access-date=2021-09-01|website=Naval News|language=en-US}}
- {{navy|Pakistan}}: Used on Babur-class corvettes{{Cite web|last=Ozberk|first=Tayfun|date=2021-01-23|title=Turkey launches the lead ship of I-class frigates "Istanbul"|url=https://www.navalnews.com/naval-news/2021/01/turkey-launches-the-lead-ship-of-i-class-frigates-istanbul/|access-date=2021-09-14|website=Naval News|language=en-US}}{{Cite web|date=2019-11-18|title=Aselsan Secures €176.9 m Contract for Pakistan's MILGEM Corvette Program|url=https://quwa.org/2019/11/18/aselsan-secures-e176-9-m-contract-for-pakistans-milgem-corvette-program/|access-date=2021-09-14|website=Quwa|language=en-US}}
- {{navy|Philippines}}: Installed on Miguel Malvar-class frigate{{Cite web |date=23 June 2024 |title=Introduction of the New Miguel Malvar-class Frigate of the Philippine Navy |url=https://www.pitzdefanalysis.net/2024/06/introduction-of-the-new-miguel-malvar-class-frigate-philippine-navy.html |access-date=24 June 2024 |website=Pitz Defense Analysis}}
See also
- Rheinmetall Oerlikon Millennium Gun - comparable Swiss-German system
- MANTIS Air Defence System - ground-based C-RAM by Rheinmetall using same gun
- Oerlikon GDF - earlier system using AHEAD rounds
- Denel 35mm Dual Purpose Gun -z comparable South African CIWS
- OSU-35K - comparable Polish system
- AG-35 and A-35 35mm - Polish ground based single barrel anti aircraft gun systems{{Cite web|url=https://en.pitradwar.com/oferta/631,a-35-ag-35-towed-anti-aircraft-35mm-gun| title=AG-35 35mm Anti aircraft Gun System | PIT-RADWAR}}