Vamsi
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I don't think RBU-6000 is for submarines anymore. I think it purpose is hard kill for incoming torpedoesokay, enough of this "under armed" nonsense
Kolkata/Vizag Class carries 533mm torpedos which are heavier, more powerful warhead, and has a range of 40 kms+. In comparison, Western/Chinese Destroyers of similar displacement carry 324mm Light torpedos that have range of just 10 kms+.
Secondly, the Kolkata/Vizag has 2 Hangers for helicopter. It means that these Destroyers carry fuel, spares, weapons , etc to maintain 2 Helicopters on high seas. Every other Destroyer has 1 Hanger to maintain 1 Helicopter.
And offcourse the BrahMos which is 3 tons in weight. Compared to 0.5 tons-1.5 tons of various other anti ship missiles around the world.
These 3 are the main reason for taking up most of the weight on the ship, and totally justified as it increases the capability of the warship by a huge margin.
Not to mention these ships carry enough fuel to allow a range of over 11,000 kms at cruise speeds.
Further i am sure these ships would be refitted with either the SRVLM/SMART/Nirbhay a few years down the line, atleast one of these three.
Saying all that, i still dont understand the use of RBU on modern warships.. These have a maximum range of 6 kms and im sure not hostile submarine would come that close to launch its Torpedos/Cruise missiles.
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