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VictorInThePacific -> RE: Anti-Air strange behaviour (11/10/2008 4:17:23 AM)
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Some more detailed analysis.
Martin, perhaps you can see if your situation fits with the following.
The 2 Nanuchkas have a maximum of 12 SS-N-9 Siren missiles, which have a maximum range of 60 nm, although really the practical range may be as low as 20 nm, which is the range at which the Nanuchka radar detects a "silent" surface target. (The Soviets tend to have much worse detection capacity than the NATO forces, and this can be used to good effect.) Due to this short range, the NATO forces should be able to do a number on the Nanuchkas.
The Sirens travel at 600 kn (www.warfare.ru/?lang=&catid=312&linkid=2560) = 6 s per nm.
The NATO FF Brave has 2 Sea Wolf launchers and 12 missiles.
range 3 nm, speed 1300 kn (?), hit 80%, 15 s cycle time.
It should be able to shoot down 1 missile per cycle time with guns.
The NATO FF Boone has 2 SM1 launchers and 36 missiles.
range 20 nm, speed 1300 kn (?), hit 60%, 15 s cycle time.
Its Phalanx gun should be able to shoot down 1 missile per cycle time.
Assume that all the Sirens are launched in one batch at the Brave (you can arrange this by putting the Brave in front). The Brave will have 3 x 6 = 18 s, which gives 2 shots, killing about 3 Sirens, plus one for the guns. The Boone will have maybe 15 nm (90 s) to respond, so it will get off 6 shots, killing about 7 Sirens. One should get through, which may or may not hit the Brave. A hit will sink the Brave. This calculation is inaccurate for 3 reasons: the results will typically give more or less hits than the average result, the Boone tends to fire late, and the computer tends to spread out its Siren fire.
If all the Sirens are launched in one batch at the Boone, the Brave won't get to shoot. The Boone should now respond over 20 nm (120 s), so it will get off 8 shots, killing about 10 Sirens, plus one for the gun. One should get through, which may or may not hit the Boone. A hit will sink the Boone.
If the Sirens are launched at both NATO frigates, none of them should be hit.
In none of these scenarios do the NATO ships use up all their missiles, but in some cases they ARE limited by the launcher cycle time.
What is clear from this calculation is that if one Nanuchka is sunk before it gets to launch Sirens, the other one will have no chance of hurting the NATO ships.
Now let's consider under what circumstances the freighters might get shot. Are the freighter radars OFF? They should be. Then the Nanuchkas will really need to close to 20 nm before they get to shoot, in which case the Boone gets less time to respond (the Brave won't participate in this situation). Also, the gunners on the Boone might be asleep (sorry, I mean the computer fire control system might fire late). So it could easily be possible for the Boone's standard missiles to be overloaded, and while the Boone doesn't get hit, some Sirens will hit the undefended freighters.
Summary: If all the Sirens are launched in one batch at one NATO ship, there is a good chance that that ship will be sunk. If all the Sirens are launched in one batch at any combination of NATO ships except the Brave, there is a good chance that at least one ship will be sunk. If all the Sirens are launched in one batch at the Brave (good point defense) plus one other NATO ship, it is unlikely that any ship will be sunk. If half the Sirens don't get launched, it is unlikely that any ship will be sunk.
THEREFORE you should sink at least one Nanuchka before it gets to fire, which can pretty much be guaranteed. Alternatively, you can use the superior NATO detection to just avoid the Nanuchkas and sneak into Narvik.
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