- en.wikipedia.org 2B1 Oka2B1 Oka, (Russian: "2Б1 Ока" - "Oka River"), is a Soviet 420 mm self-propelled heavy artillery. 2B1 is its GRAU designation. Development.
- scientiaen.com 2B1_Oka2B1 Oka, (Russian: "2Б1 Ока" - "Oka River"), is a Soviet 420 mm self-propelled heavy artillery. 2B1 is its GRAU designation. Development.
- tr.military-review.com 12479005-the-largest-…2B1 "Oka" topçu montajının ana silahı, 420 mm 2B2 yivsiz harçtı. Havan namlusunun uzunluğu yaklaşık 20 metre veya 47.5 kalibreydi.
- premium.globalsecurity.org military/world/russia/…The ammunition of the 2B1 Oka mortar contained only a nuclear warhead, which guaranteed at least one tactical nuclear strike in any circumstances.
- youtube.com watchThe Tank With A 20-Meter Barrel - The 2B1 Oka. Поиск.5 bin görüntülemeYayınlandı4 May 2022
- tr.fashionrebelsbook.com 17257058-nuclear-420-mm-…İkisi de kendi çapında haklıydı. 420 mm kundağı motorlu harç 2B1 "Oka" oldukça gerçekçi bir şekilde vardı ve hatta birçok test atışı yaptı.
- en.topwar.ru 184327-samyj-bolshoj-minomet-v-…Among the most powerful artillery systems, the self-propelled Soviet mortar 2B1 "Oka" would definitely not be lost.
- military-wiki.com 2B1 Oka: The Most Feared Soviet 420mm Nuclear ArtilleryCapable of firing continuously 12 times per hour, firing 750 kg nuclear projectiles up to 45 km away, the 2B1 Oka is the most fearsome nuclear supergun ever built.
- interestingengineering.com innovation/the-2b1-oka…But these facts were not officially reported, naturally. Four self-propelled 2B1 “Oka” mortars were assembled at the Kirov plant. 2b1 Oka vital statistics.
- trendexmexico.com novosti-i-obschestvo/73033-…One of them can be the atomic mortar 2B1 "Oka". Unlike the Tsar Cannon, it was used for its intended purpose, however, only at the test site.
- tankhistoria.com cold-war/2b1-oka/What they didn’t know was that this vehicle was anything but fake, it was the 2B1 “Oka”. The 2B1 is a defining example of Soviet “flexing”.
- wonderfulengineering.com meet-the-2b1-oka-the-…To get back in the game, the Soviets decided to work on the tank, IS-5, to serve as the base for the planned 2B1 “Oka” mortar.