There's quite a difference. The number of cells on Type 45 was calculated to be what was needed (assuming, I expect, big margins of error) in a high risk scenario. Most of the time, there's no such scenario, so no need to fill all the cells. The missiles last longer if they're stored on land, so best to leave them there when not needed aboard ship, but AFAIK we have bought enough Aster to fill all the cells on our Type 45s.
You are confirming my exact point. I'm proposing the installation of a Tomahawk capability on the Type 45. Not that EVERY cell be filled permanently with them, just as the Aster cells aren't likely to be permanently filled now and even the full number of Harpoon canisters aren't always carried on the ships they are being taken from, for the very same reason.
As with every other precision guided weapon, any expected operational scenario will see the ships armed with their full capability only as long as the available stores can last.
We have never bought anywhere near enough Tomahawk to give our currently active (ignoring those in refit) SSNs a full load, even assuming a normal load of torpedoes. It's never been felt necessary. The ratio of space to weapons is very different from that for Aster. So why do we need to add launchers for them?
Why did the RN propose Tomahawk for the Type 45 in the first place? They see a value in the capability from the ships in addition to that provided by the submarine fleet...
Again, I never proposed the entire RN warstock of Tomahawk be carried...
However if you like one could make the EXACT same points about Harpoon. What's your warstock of those weapons like? Can the Type 23's carry the entire warstock that the UK has? When was the last time the UK bought a single Harpoon missile? Why would you need them on Type 45 when Type 23 already has them and so on?
I get the point of Harpoon is to add capability at little overall extra cost, however extra cost IS planned to be incurred through the development of new types of weapons that will undoubtedly require new launching mechanisms.
I think that the MoD feels this is a solution looking for a problem. & the RN isn't asking for TLAM tubes on Type 45. It is asking for CEC, & some other things, when there's money. It doesn't feel short of anti-ship capability, either, & I suspect the installation of Harpoon on some Type 45s is seen as a self & fleet defence measure, not offensive.
I don't. I get the feeling the reason Type 45 doesn't have them already is mostly because of inter-service rivalry. The RN First Sea Lord has already testified to the UK Parliament that RN wants the Type 45's to have the capability.
As for cost, a set of 6 (x8) Mk 41 VLS would cost the UK about $200m. An initial warstock of 48 weapons, would have set you back about $50-$55m and the Tactical Tomahawk Weapon Control Systems and software would have set you back between $60-80m. At worst you'd have been up for about $300-$320m to fit out the fleet with a basic TacTom capability and the cost would have been far less during construction than during subsequent refits.
Spain's cost to fit out 5 F-100 series destroyers with TacTom plus an initial warstock of weapons was $156m, though they already had the Mk 41's...
Despite this the RAF tri-service Director of Equipment Capability - Deep Strike (DEC(DS)) didn't consider it a pressing requirement and ruled against it...
The RN obviously didn't agree with this as they managed to argue for space, weight and the ability to add additional strike length cells to be reserved within the design and you only need that much room for long range land attack or BMD weapons.
There's an argument that the new TASM (the old one having been retired long ago) is also a solution looking for a problem. If you can find & target an enemy ship at the ranges of Tomahawk, you should be able to sink it without having to wait an hour or two for a Tomahawk to get there.
It's an argument some could make, but it's a poor one, given multiple standoff weapon manufacturers are adding maritime attack and moving target attack capability modes to their long range weapon solutions... The idea clearly is to seek bank for buck from the available weapons a force maintains. The same fundamental design ideas are being promoted for Perseus and other UK based weapons I believe.
But If you had a target to hit at 1600k's how exactly are you going to engage it by yourself, more quickly? A supersonic weapon would sure, but how many anti-ship capable supersonics does the UK maintain? Besides, Tomahawk is heading towards being supersonic capable anyway. I'm sure the UK will be making future Tomahawk purchases...
Out of interest, besides subs, what long ranged anti-ship missile capability does Britain have at present? Harpoon 1C obviously and Brimstone 2 for a light, short-ranged weapon, but what about the RAF? What do they use for the heavier role? Tornado and Harpoon?
Your argument A hasn't been thought through. We're fitting missiles & launchers we already own, taken from retired ships, to Type 45, in space allocated for exactly that purpose. Minimal spending, no need to cut the ships open.
Sure but that's only an interim idea at best. Any longer term solution is going to require coin. A TacTom based solution is likely to be cheaper for the RN than any other new system, given you'll again have the ability to fit missiles you already own...
Your argument C doesn't apply - and you implicitly recognise this in argument B. We already have TLAM, & we have launchers for it. We would not be adding anything by sticking Mk 41 strike length VLS on Type 45, except more platforms to launch it from - and that is a very low priority for the RN.
You'd be adding the same thing Harpoon is going to give the Type 45's, namely expanded capability across different mission sets. The only difference is that Tomahawk and the latest variants of TacTom offer far more capability against a much broader set of missions than any Harpoon variant.
And as to not adding anything er, do your subs go everywhere a Type 45 might and why did the RN even bother getting Tomahawk in the first place? RAF has Storm Shadow right?
Why bother adding Harpoon to the Type 45 if that is your mindset? The 4.5 inch gun and the Wildcat helos will provide defensive anti-ship capability afterall and the Type 23's can already fire Harpoon1C...
Our budget is far too tight for comfort already. What do you propose we do without to "add" this capability we already have?
There's no "fat" at all within the budget to find $300m or no chance of additional funds being made available at all, or did those new Block 1B Phalanx guns the Type 45's are getting, just appear out of thin air? In either case, I believe that the UK Defence Secretary made an announcement along these lines not so long ago:
“the MoD budget has headroom of £8bn over the next 10 years for potential new programmes. The Armed Forces Committee will prioritise which projects to commit to when necessary, and not before.”
RN has the capability to launch Tomahawk, yes. At present that capability also unavoidably reveals you have a submarine in the AO too. Type 45 + TacTom would alleviate that issue somewhat as well...