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Wednesday, 18 April 2018

INFOGRAPHICS #30: The Russian Navy submarines in 2018

Written by D-Mitch 

Dmitriy Donskoy, the last of the Typhoon class undersea giants...
In the following infographic, The Russian Navy submarines in 2018, I depict all the submarines that are currently in commission with the Russian Navy (as of April 1, 2018). Currently, the Russian Navy (Russian: Военно-морской Флот Российской Федерации (ВМФ России), lit. Military-Maritime Fleet of the Russian Federation) operates an impressive number of powerful nuclear-powered and diesel electric submarines,. The Russian ballistic missile submarine (SSBN) fleet  consists of  four (4) Borei class SSBN (the fourth vessel and lead ship of the fifth generation Borei II-class, Knyaz Vladimir, is scheduled to enter service this year), six (6) Delta IV class SSBN, one recently overhauled Delta III class SSBN (Ryazan) and the last (and upgraded) boat of the largest ever built submarine class, the Typhoon class Dmitriy Donskoy (TK-208). Moreover, Russia operates eight (8) Oscar II class guided missile submarines (SSGN), 11 Akula I/II/III class nuclear-powered attack submarines (SSN) plus one more boat (Nerpa) which has leased to India from 2012 for 10 years (Chakra), one Yasen class SSN while one more, K-561 Kazan, is about to be commissioned this year, three (3) Victor III class boats and four (4) Sierra I/II class boats. The active diesel electric submarine fleet consists of 21 boats, all of them except one boat (Lada class B-585 Sankt Peterburg) belong to the Kilo/Improved Kilo class attack submarines. The Russian Navy maintains also a significant amount of special purpose submarines including two nuclear-powered modified Delta III/IV boats (they operate as motherships for mini submarines, for a combination of oceanographic research, search and rescue, and underwater intelligence-gathering) as well as the 90 (?) -meter Sarov and the nuclear-powered AS-12, known also as Losharik. It should be mentioned that many boats are still inactive or in modernization overhaul.

The Russian Navy submarines in 2018. For a high resolution image click here.
I would like to thank a lot my friend Artjom H for his great help, and specifically for the provision of accurate information about the number of boats and their current status in service with the Russian Navy as well as for his (really impressive) patience answering all my questions!
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Wednesday, 11 April 2018

INFOGRAPHICS #29: The United States Navy submarines in 2018

Written by D-Mitch

Ohio class SSBN of the United States Navy
In the following infographic, The United States Navy submarines in 2018, I depict all the submarines that are currently in active service with the United States Navy (as of April 1, 2018). Currently, the United States Navy operates a massive amount of powerful nuclear-powered submarines, consisting of 14 Ohio class ballistic missile submarines (SSBN), four (4) Ohio class (modified) guided missile submarines (SSGN), three (3) Seawolf class nuclear-powered attack submarines (SSN) (including the modified USS Jimmy Carter SSN-23), 15 Virginia class SSN while one more, the USS Indiana SSN-789 is about to join the fleet, 23 Improved Los Angeles class SSN, and 12 Los Angeles class SSN. Of the Los Angeles class submarines, three (3) are about to decommissioned in the near future (USS Buffalo (SSN-715), USS Olympia (SSN-717) and USS Jacksonville (SSN-699)). There will be only one vessel from the Los Angeles class Flight I & II in active service for limited time, which is the USS Bremerton (SSN-698). This year, two more Virginia class SSN are scheduled to join the fleet, the USS South Dakota (SSN-790) and USS Delaware (SSN-791). These two vessels will be the last of the Block III while a new Block IV that will consist of ten (10) boats is under construction. It should be mentioned that all the boats are nuclear-powered.

The United States Navy submarines in 2018. For a high resolution image click here.
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Tuesday, 3 April 2018

Radiated Noise Signature of Modern Diesel Submarines

Written by George Papangelopoulos
Japanese Navy Oyashio class SSK performing an
emergency main ballast blow maneuver. Photo: JMSDF
One of the best-kept secrets of submarine manufacturers and operators is the level of their subs’ signatures. As a result, related official published and open source data is mostly limited to general estimations of outdated designs from the Cold War era. The key signatures of a conventional submarine include its radiated noise, its target echo strength, its magnetic characteristics and its snort mast’s radar cross section and radiated heat. As new and more sophisticated naval mine detonators are developed, electric signatures (UEP, ELFE) are added to this list. The present article focuses on the radiated noise of modern diesel-electric submarines (SSKs), in an effort to shed some light on this interesting and highly classified subject. 

Italian Sauro class submarine emerging next to a Durand de la Penne class destroyer
Radiated noise is the total noise emitted by a submarine and can be received by hostile passive sonars. It should not be confused with sonar self-noise, although in most cases both are caused by the same sources. For example, flow noise can be an important contributor to the sonar self-noise even at low speeds, but it is only at high speeds that it becomes a significant contributor to radiated noise. 

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Sunday, 1 April 2018

Inverted-Bow Warships Back in the Aegean Sea?

Written by D-Mitch

The legendary WWI era Georgios Averof armored cruiser of the
Hellenic Navy featured an inverted bow. It is now a museum ship.
This is the introduction to an article I wrote for the world-wide known Navy Recognition, one of the most popular online media covering Naval Forces, Defense Industry, Naval Technology and Maritime Security. The article titled "Inverted-Bow Warships Back in the Aegean Sea? " looks at the potential return of "inverted bow warships" in the Aegean sea as the Hellenic Navy is reportedly looking closely at the  French Navy's future FTI (Frégate de Taille Intermédiaire or mid-size frigate) Belh@rra, a next generation frigate designed by French shipbuilder Naval Group. Naval Group has named its new frigate Belh@rra in reference to Europe’s only giant wave: the Belh@rra. The first “a” transformed into an @ makes reference to the highly digital nature of the frigate proposed by Naval Group! Enjoy my (long) take on the design and features of this new stealth powerful front-line digital frigate here!

Infographic of the Belh@rra frigate. The inverted bow it is her distinctive characteristic! High resolution image here.
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Tuesday, 27 March 2018

A Kiel International Seapower Symposium experience!

Written by D-Mitch

Some days ago, I received an invitation to the Kiel International Seapower Symposium 2018 (KISS18), titled "Allied Maritime Strategy – A Theory for Success", the second of the Kiel Seapower Series international symposiums, which is organized by the Center for Maritime Strategy and Security, of the Institute for Security Policy, Kiel University (ISPK) with support from the Center for Naval Analyses (CNA), Arlington, Virginia, U.S.A. The invitation from the Head of the Center, Dr. Sebastian Bruns, brought me back good memories from the KISS'17, the first of the Kiel Seapower Series international symposiums, which I had the great privilege to attend.

The symposium venue at the historical Hotel Kieler Yacht Club
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Saturday, 17 March 2018

FLEETS #20: The German Federal Navy in 1960

The destroyer Zerstörer 2 (D 171)
U-Boot Hecht (S 171, ex U 2367)
The German Navy was originally known as the Bundesmarine ("Federal Navy") from 1956 until 1995 when Deutsche Marine ("German Navy") became the official name with respect to the 1990 incorporation of the East German Volksmarine ("People's Navy"). The following graph includes includes all ships which were in service with the West Germany's Navy on July 1st, 1960. I would like to mention here that the original source of the graphs is not known; the graph was posted by the reddit user J4yJ4m on WarshipP0rn.

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Thursday, 1 March 2018

INFOGRAPHICS #28: The attack submarines of the Mediterranean in 2018

Written  by D-Mitch

In the following infographic, named The Attack Submarines of the Mediterranean in 2018, I depict all the attack submarines that are in active service in the Mediterranean Sea right now (and will continue to be part of their Navies until the end of 2018). Please note that in comparison with the previous graphs about The Attack Submarines of Europe in 2017 (updated for 2018) and The Attack Submarines of Latin America in 2018, there are nuclear-powered  submarines (SSN) in the region, and specifically only France has that type in its inventory. There are also submarines that have submarine-launched cruise missile capability which belong to Algeria (Kilo class with Club-S) and Israel (Dolphin I/II class with Popeye Turbo). Moreover, there are three countries in the region with submarines in their inventories equipped with Air-Independent Propulsion (AIP) system; Greece (five in its inventory), Italy (four in its inventory) and Israel (two in active service, one more to be commissioned). It should be mentioned also that from the 21 the countries with coastlines on the Mediterranean Sea, only seven navies (7) have submarines in their fleet. Specifically, Turkey has the most numerous fleet but France has all its submarines nuclear-powered while Greece has five (5) of its eleven (11) submarines (only one boat less than Turkey) equipped with AIP. Furthermore, Egypt, has in its inventory the longest submarines in the region (Romeo class: 76.6 meters length) and the oldest as well and Algeria the largest ones (Kilo class: approximately 3,200 tons submerged).

The Attack Submarines of the Mediterranean in 2018. For a high resolution image click here.
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Monday, 26 February 2018

INFOGRAPHICS #27: The attack submarines of Latin America in 2018

Written  by D-Mitch

In the following infographic, named The Attack Submarines of Latin America in 2018, I depict all the attack submarines that are in active service in Latin America right now (and will continue to be part of their Navies until the end of 2018). Please note that in comparison with the previous graph about The Attack Submarines of Europe in 2017 (updated for 2018), there is no nuclear-powered  submarine (SSN) in any Navy (at least until Brazil commissions its first vessel after 2020), neither there is a submarine equipped with Air-Independent Propulsion (AIP) system (the Chilean Scoprene class submarines are fitted but not with the system and will receive it in a future refit). It should be mentioned also that from the 21 countries of Latin America, only seven navies (7) have submarines in their fleet; Peru has the most numerous fleet but Brazil and Chile the most modern submarine fleets in the region. Moreover, the 92% of the Latin American submarines are German-built (!). Also, Argentina, while it has in its inventory the largest submarine in the region (TR1700 class: 67 meters length and 2,100t displacement), none of its submarines is in active service.

The Attack Submarines of Latin America in 2018. For a high resolution image click here.
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