Project 955A "Borei-II" SSBN .

Russian Navy to get the first improved Borei-A-class Prince Vladimir in 2019.

Russian Navy to get the first improved Borei-A-class Prince Vladimir in 2019

俄羅斯又一艘核潛艇955A即將服役，水下排水量2.4萬噸，載16枚彈道導彈.

據俄羅斯媒體報導，俄新一代彈道導彈核潛艇“北風之神”級的改進型955A型戰略核潛艇“奧列格王子”號即將服役。它是一款改進型的核潛艇，它與以往的型號所不同，它的外形結構以及內部的系統等方面都有了很多變化。這個潛艇的排水量非常的高，有達2.4萬噸，都超過了美國的“俄亥俄”級.這款核潛艇是在955型的基礎上改進而來的，但是955型的核潛艇也並不是完全新造的，也運用了其他舊潛艇的部件，而且這一型的潛艇就與“阿拉庫Ⅱ”級核潛艇的許多方面相似。但是武器裝置方面有了許多改變，955A型核潛艇有16個導彈垂直發射筒，每個導彈所攜帶的分導式核彈頭都有達6至10枚，有達10000千米的射程，這也是它的最大射程，威力十足。

僅管俄羅斯近年來國防經費吃緊,但是更新海軍潛艦的計劃,扔然持續進行.955A.將配給俄羅斯海軍北方艦隊服役,將針對NATO.北大西洋公約組織的美國,英國,法國等潛艦對抗.

The fourth submarine of the Project 955A, Knyaz Vladimir, is expected to join the navy by the end of 2019. It will remain with the Northern Fleet, joining the first Project 955 submarine, Yuri Dolgorukiy.

The fifth Project 955/955A submarine, Knyaz Oleg, still appears to be in the dry dock at Sevmash, although it was expected to begin service in 2020. It will join the Pacific Fleet.

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Analysis: Russias Project 955A SSBN Design Improvements over Project 955 .

At first sight the fourth nuclear-powered submarines with ballistic missiles (SSBN) of project 955 (codename Borei) looks like its predecessors. The Prince Vladimir (codename Borei-A) submarine of project 955A was initially designed as a submarine with higher combat capabilities, the Zvezda TV and radio broadcaster said.

 Knyaz Vladimir Project 955A submarine to join Northern Fleet.

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Complex design determined three main modernization guidelines for initial project 955 submarines. They include decreased noisiness, higher maneuverability, and auxiliary systems in charge of detecting the adversary and engaging weapons.

The difficult task of the creation of the underwater fleet is always compared with major city operations, which need a single mechanism and thousands of auxiliary tools to manage.

An overwhelming majority of technologies to build submarines is secret - from the design of the propeller screw to the ventilation system. It is only known that the upgraded submarine will be less noisy than its predecessors. It is to be noted that several research institutes were engaged in the design of noise insulation.

The sound-adsorbing coating together with specifically located onboard equipment provides for practically noiseless combat patrol. The sound-absorbing insulation composition changes with the emergence of each submarine, as well as the method to fix it to the hull. Unique technologies for the creation of high-density substances decreased the noisiness of modern submarines over 100 times against Cold War era U-boats.

Speed and ability to escape from the adversary were always considered the main combat criteria of nuclear submarines. The Rubin designers focused on the ability of the new submarine to maneuver, change the depth and covertly move. Its power plant and propeller screws have a unique design, which allows the fourth-generation submarine to sail at a speed of nearly 30 knots underwater.

"It is necessary to observe technological procedures and provide minimum tolerance for the propeller screw to avoid cavitation, which considerably increases the noisiness of the U-boat and can also damage the product," expert Sergei.

Project 955A submarines have other innovations as well. They are equipped with hydraulic jets for covert movement, which together with high-duty low-magnetic hull allow sailing with maximum low noise at major depth and thus avoid detection by hydro-acoustic stations of the adversary.

The main arms of project 955A submarine remained unchanged - the Bulava ballistic missile with six multiple individually targeted reentry vehicles. Each boat carries up to 16 such missiles with a maximum range of 9300 km. Experts say the 955A project also upgraded the command system and safety of missiles onboard. Experienced engineers say the only aim of the upgrade is to decrease launch preparation time to the minimum.

Although experts agree the Prince Vladimir is already superior in combat capabilities than US Ohio-class submarines, the naval component of the Russian nuclear deterrence can soon be upgraded and reinforced with modern submarines codenamed Borei-B, 

The Russian Navy recently launched its 4th Pr.0955 BOERI Class ballistic missile submarine (SSBN), Count Vladimir (Князь Владимир). It was the first of the improved Pr.0955A (aka 09552) BOREI-II sub-variant..

New design details of the latest #Borei #SSBN Pr.955A Knyaz Vladimir are starting to emerge.
 

955型核子動力潛艦的俄文名為Борей（意為希臘神話中的北風之神玻瑞阿斯，俄方代號：955設計，西方稱為多爾戈魯基級)是德爾塔級核潛艦和颱風級核潛艦的後繼型，由俄羅斯紅寶石設計局設計，在俄羅斯潛艦技術劃分內為第四代彈道飛彈潛艦。

北風之神級潛艦計畫替代前蘇聯時代研製的第三代核子動力彈道飛彈潛艦，成為俄羅斯海軍的核子戰略打擊主力。排水量達24,000噸的「北風之神」是世界上第二大的潛艦，僅次於蘇聯時期建造的「颱風級」，她的對手美軍「俄亥俄級」則以18,750噸排第三。

The Borei class, alternate transliteration Borey, Russian designation Project 955 Borei and Project 955A Borei-A, (Russian: Борей, meaning "Boreas, NATO reporting name Borei), also referred to as Dolgorukiy class, are series of nuclear-powered ballistic missile submarines being constructed by Sevmash for the Russian Navy. The class is projected to replace the Soviet-era Delta III, Delta IV and Typhoon classes in Russian Navy service.