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originally posted by: AthlonSavage
information is encoded on a carrier signal by modulation the carriers amplitude, phase or frequency. Im far from an expert on signal transmission but I would make a guess that Em weapons will target on the modulated information, corrupt it so its undecipherable. Doing it this was would reduce significantly the amount of power needed to disrupt as the disruption signal is not trying to stop the carrier signal.
originally posted by: NavyDoc
originally posted by: NoRulesAllowed
The OP story is ridiculous, there is so much wrong with it.
Why would a Russian plane "approach" a US ship....and why then (even if we assume it were true they disabled the ship's electronics)..would it "simulate 12 missile attacks". It goes against any common sense and would be incredibly stupid to do.
Says a lot about the credibility of the websites you pull that cr@p from...just saying...
Considering they wouldn't have to approach 12 times to launch 12 missiles, the premise is silly.
originally posted by: Power_Semi
The UK did some manouevers fairly recently with the US and our new class of sub is far and away more advanced and capable than anything else in the world, it quite blew away the US observers when they saw what it could do.
Nr.1 Seawolf class (USA)
Entered service: 1997
Diving depth: 487 m
Torpedo tubes: 8x660-mm
Weapons: Mk.48 torpedoes, Sub-Harpoon anti-ship missiles and Tomahawk cruise missiles
The boats of the Seawolf class are the most advanced but also the most expensive hunter-killer submarines in the world. These submarines were intended to restore the technological edge which the US Navy had enjoyed over the Soviets from 1945 until the mid-1980s, when espionage and the cynical trading practices of some US allies somewhat eroded it.
The Seawolf class boats were intended to seek and destroy the latest Soviet ballistic missile submarines, such as the Typhoon class and attack submarines such as the Akula class.
Initially 12 boats of the class were planned. However these advanced submarines were too pricey even for the United States to build and maintain on the post-Cold War era budget. Eventually production was stopped with only three Seawolf class submarines built. All of these boats are currently in service. The US Navy switched to much cheaper design of Virginia class attack submarines.
The Seawolf class submarines are arguably the quietest submarines in the world ever constructed. It is exceptionally quiet even at high speeds. Most submarines need to keep their speed down to as little as 5 knots to avoid detection by passive sonar arrays, while the Seawolf class are credited with being able to cruise at 20 kots and still be impossible to locate. A Seawolf at 25 knots makes less noise than an older Los Angeles class submarine tied up alongside the pier.
These boats can operate at greater depths than existing US submarines and can also operate under the polar ice cap. Also these are faster than most other submarines.
These submarines have eight 660-mm torpedo tubes. These tubes are used to launched Mk.48 torpedoes and Sub Harpoon anti-ship missiles. Torpedo tubes are also used to launch Tomahawk land attack cruise missiles with a range of 1 700 km. A mix of 50 torpedoes, Sub Harpoons and Tomahawks can be carried.
Nr.2 Virginia class (USA)
Entered service: 2004
Diving depth: over 250 m
Vertical launched tubes: 12
Torpedo tubes: 4x533-mm
Weapons: Mk.48 torpedoes, Sub-Harpoon anti-ship missiles, Tomahawk cruise missiles.
The US Navy's Virginia class nuclear-powered attack submarine is as a successor to the Los Angeles class boats. It was designed as a smaller, cheaper and more versatile alternative to the advanced but extremely expensive Seawolf class. A total of 30 of Virginia class nuclear-powered attack submarines are planned.
The Virginia class submarines incorporate newly designed anechoic coating, isolated deck structures and new design of propulsor to achieve low acoustic signature. It is claimed that noise level of the Virginia is equal to that of the Seawolf class.
The Virginia class submarines are fitted with 12 vertical launch system (VLS) tubes. These are used to launched Tomahawk land attack cruise missiles with a range of 1 700 km. Also there are four 533-mm torpedo tubes. These are used to fire a total of 26 Mk.48 heavyweight torpedoes and Sub Harpoon anti-ship missiles.
These boats can be also used for special operations. It is the first US submarine to employ a built-in Navy SEAL staging area allowing a team of 9 men to enter and leave the submarine.
Nr.3 Astute class (United Kingdom)
Entered service: 2010
Diving depth: over 150 m
Torpedo tubes: 6x533-mm
Weapons: Spearfish torpedoes, Sub-Harpoon anti-ship missiles, Tomahawk cruise missiles.
The first Astute class nuclear-powered attack submarine was commissioned with the Royal Navy in 2010. So far 7 boats of the class are planned. These will replace the older Swiftsure class attack submarines.
The Astute class boats are significantly stealthier and carry more weapons than the previous boats of Trafalgar class.
These attack submarines are fitted with six 533-mm torpedo tubes. These are used to launch Spearfish torpedoes, Sub-Harpoon anti-ship missiles and Tomahawk cruise missiles. A mix of 36 missiles and torpedoes are carried.
The Tomahawk Block IV land attack cruise missiles have a range of 1 700 km and can target enemy ships as well as land targets.
originally posted by: big_BHOY
a reply to: Drunkenparrot
Think it's to do with what Rear Admiral Ian Cordner said:
As well as what came from the Captain of HMS Astute as it was undergoing trials in the US:
Britain's nuclear hunter-killer submarines were doomed from the start.
But it is the speed issue that may be the most problematic. To save money, the MoD decided not to build a new nuclear reactor for the Astute, but to use the Rolls Royce PWR2 (pressurised water reactor 2) that had been fitted to the Vanguard fleet of Trident submarines.
"The PWR2 was shoehorned into the Astute, and it meant the submarine's initial designs had to be changed," said a source. "That is why the Astute has a slightly bulbous look about it, not the clean lines that you might expect. The reactor was never meant for an attack submarine and it is supplying power to machinery whose designs have not greatly changed for 50 years. In very simple terms, it is like hooking up a V8 engine to a Morris Minor gearbox."
Slow, leaky, rusty: Britain's £10bn submarine beset by design flaws.
Of all the difficulties, it is the problems with propulsion which are the most sensitive. The MoD stated Astute would be able to make 29 knots, but the Guardian has been told it cannot do this.
"So much promise was held out for the Astute class of nuclear powered submarine but these faults occurring during its commissioning into active/service, particularly in the propulsion system and its under-performance, suggest that the whole has been cobbled together from some ill-fitting parts