Bangladesh Navy

[khanasifm]

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Purchase of Chinese Subs by Bangladesh 'An Act of Provocation' Toward India

http://www.defensenews.com/articles...bangladesh-an-act-of-provocation-toward-india

 

[bluesky]

Operating system of a diesel-battery submarines

A diesel submarine is a very good example of a hybrid vehicle. Most diesel subs have two or more diesel engines. The diesels can run propellers or they can run generators that recharge a very large battery bank. They can also work in combination, one engine driving a propeller and the other driving a generator.

The sub must surface (or cruise just below the surface using a snorkel) to run the diesel engines. Once the batteries are fully charged, the sub can head underwater. The batteries power electric motors that drive the propellers without noise. This makes it possible to be near an enemy warship. Battery operation is the only way a diesel sub can actually submerge.

 

[Michael Corleone]

Operating system of a diesel-battery submarines

A diesel submarine is a very good example of a hybrid vehicle. Most diesel subs have two or more diesel engines. The diesels can run propellers or they can run generators that recharge a very large battery bank. They can also work in combination, one engine driving a propeller and the other driving a generator.

The sub must surface (or cruise just below the surface using a snorkel) to run the diesel engines. Once the batteries are fully charged, the sub can head underwater. The batteries power electric motors that drive the propellers without noise. This makes it possible to be near an enemy warship. Battery operation is the only way a diesel sub can actually submerge.

No wonder all the complaints... even though it's a noisy sub... end of the day it will still butt hurt India to find it.

 

[Bilal9]

 

[mb444]

Everyone here keeps talking about how these subs are for training only, which is not the case. Finding a sub is like finding a needle in a haystack if it does not want to be found. These mings are no different. Anyone claiming these subs are noisy so there movement would be transparent to our enemies have no clue.

These subs will be able to lay mines almost undetected and have torpedoes. The subs gives added teeth to BN that we have not had before. They are a fantastic acquisition for area denial and offensive purposes. I would not write them off so easily and here's hoping more subs will follow soon.

 

[TopCat]

Everyone here keeps talking about how these subs are for training only, which is not the case. Finding a sub is like finding a needle in a haystack if it does not want to be found. These mings are no different. Anyone claiming these subs are noisy so there movement would be transparent to our enemies have no clue.

These subs will be able to lay mines almost undetected and have torpedoes. The subs gives added teeth to BN that we have not had before. They are a fantastic acquisition for area denial and offensive purposes. I would not write them off so easily and here's hoping more subs will follow soon.

Ya we can only see them from Indian reaction.

 

[bluesky]

No wonder all the complaints... even though it's a noisy sub... end of the day it will still butt hurt India to find it.

No, no, you are a little mistaken about noise. A diesel-electric sub operates usually with its diesel engine during peacetime. However, the duel system is operated when it is in a zone of conflict. When the sub is near an enemy ship, it switches off the diesel engine and turns of the electric motor. This is how the noise is almost zero to the amount that it is about to a large fish slowly swimming under the water.

 

[Homo Sapiens]

 

[~Phoenix~]

 

[Michael Corleone]

No, no, you are a little mistaken about noise. A diesel-electric sub operates usually with its diesel engine during peacetime. However, the duel system is operated when it is in a zone of conflict. When the sub is near an enemy ship, it switches off the diesel engine and turns of the electric motor. This is how the noise is almost zero to the amount that it is about to a large fish slowly swimming under the water.

Noisy sub in the sense that it doesn't use AIP propulsion like the new Pakistani ones... nor does it have latest in propeller propulsion. Wasn't talking about the Diesel engine.

 

[Exiled_Soldier]

Noise is no issue. They are done to reduce acoustic signatures. The Ming class are succeeded by diesel run Song class, which are almost same but carry more armaments. The issue is BD may next acquire Song or Kilo class. But the fear is that these Mings can still do this...............


When a Chinese Submarine Appeared In The Middle Of A Carrier Battle Group

On 11th November 2006, the Commander of the US Navy’s Pacific Fleet at the time, Gary Roughead, made a historic visit to China in a hope of improving the relations between the two countries. His visit was intended to organize a joint military exercise that emphasized the search and rescue role of the Navy that was to take place on 19th of November that year.

However, the visit was overshadowed by the incident that occurred during an American naval exercise near the island of Okinawa. On 26th of October, a Chinese Song-Class submarine surfaced within five miles of the USS Kitty Hawk airplane carrier in the Pacific Ocean. Several weeks before the US delegation met with their Chinese counterparts, ships from the Pacific fleet were stationed in international waters between Taiwan and South Japan.

The carrier was surrounded by a dozen of ships in a protective formation, but nevertheless, the Chinese sub managed to slip through unnoticed. It came as a surprise that the Americans were unable to detect the lone submarine earlier, for their extensive defense screen included a submarine and anti-submarine helicopters, all responsible for protecting the battle group from an underwater attack.

Admiral Gary Roughead. By U.S. Navy photo, Public Domain.
There were a number of theories why the Chinese Navy staged such a provocation. It remained unclear for how long the sub was shadowing the carrier, but this sort of error showed how much the American Navy let its guard down after the Soviet submarines stopped being a threat.

After the fall of the Soviet Union, the Navy conducted a plan to de-emphasize their anti-submarine warfare capabilities, since they were convinced that the preeminent submarine threat had been neutralized and that it would take decades for such a threat to re-emerge.

The Chinese military officials dismissed the Washington report that the submarine was following the aircraft carrier, but it seems unlikely that the whole incident was accidental. The sub-detection capabilities of the US Navy showed that they didn’t consider the level of advancement of the Chinese submarine fleet. China has alway been reclusive about its arsenal, so this came as no surprise. Nevertheless, the US underestimated the level of sophistication achieved by the Chinese subs.

Source:warhistoryonline

 

[Banglar Bir]

India’s World- Chinese submarines and Sino-Bangladesh defence ties

 

[Bilal9]

BD may next acquire Song or Kilo class

The KILO class is already more or less obsolete - as far as I know.

The follow on from the Rubin submarine design bureau is the improved KILO (Project 636) Class and the Lada (Project 677) Class, images below.

KILO 636

LADA 677

The Lada class features a new anti-sonar coating (termed 'Molniya') for the hull resulting in low acoustic signature. Submarines are fitted with sophisticated sonar equipment with bow and flank arrays, as well as towed array. The coating causes the new Lada class to be even ten times more quieter than the KILO 636.

The submarine has a solid hull made of unique highstrength steel alloys. •According to Rubin, the ship features a new efficient antisonar coating of the hull new generation “Molniya” (“Lightning”). •The submarine hull also has a new multi-layered rubber cover providing almost complete absorption of own noises generated by submarine mechanisms, and sonar echo signals. The submarine, its propulsion plant, machinery and weapons systems can be controlled either from the main control room or from separate battle stations.

 

[masud]

 

[monitor]

Dockyard and Engineering Works, Narayanganj launches a new class of coastal patrol craft named as "Shobuj Bangla".
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The first unit of the class CGS Shobuj Bangla was launched at the Navy own shipyard near Dhaka on last Thursday (01/12/2016) at a launching ceremony attended by Director General of the Bangladesh Coast Guard Rear Admiral AMMM Aurangzeb Chowdury as its chief guest.
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Specifications:
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• Length : 51.40m.
• Breadth (Moulded):7.00m
• Draught(Max): 1.96m
• Displacrment: 297 tonnes
• Maximum speed: 23.0kn
• Main Engine: 02 × 2240KW, DEUTZ, Germany.
• Propeller: 02 × Fixed pitch propeller
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Armament:
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• 2 × 25mm semi-automatic Gun
• 2 × 14.5mm Gun
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Capabilities :
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• Complement: 45 persons
• Cruising Rang: 1500 Nautical mile
• Sea keeping ability: Able to operate at sea state 4 and can sustain up to sea state 6.
• Able to tow another vessel of similar displacement.
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#CGS #CoastGuard #ShobujBangla
Shared by: Bangladesh Defence