Question: Modern Heavy Cruisers?

One question in modern naval thinking has had me wondering recently, looking at the multiple threads about gun-armed warships in the age of aircraft carriers. The reasoning is this.

The most recent (talking late 20th Century here) conflicts that involved real naval operations - Vietnam, Falklands, Grenada, Lebanon, Preying Mantis, Desert Storm - all involved naval gunfire support to troops close to the shore or invading a hostile shore. For the United States, Vietnam saw this provided by a reprieve for the last examples of the Baltimore-class and Des Moines-class heavy cruisers and two tours by the battleship New Jersey, while New Jersey also saw action in Lebanon and Wisconsin and Missouri were in action during Desert Storm, while British frigates and destroyers provided support to the Royal Marines landing on the Falklands. There are other conflicts which could require the use of NGFS as well. But in modern times, the United States' largest warship weapons are the five-inch weapons used by all their cruisers and destroyers, and I don't think anyone is any different today. But as the five-inch guns have shells of only 70-pound when used for land attack (the Baltimores and Des Moines had 335-pound shells) and a maximum range of about fifteen miles, this is kinda weak for trying to support troops on the beach, regardless of how accurate it is (and keeping in mind that extended-range and guided shells are VERY expensive) and when needing to get the bad guys off the beach. Using attack aircraft are useful as well, but they have limits as well.

My thought is that perhaps nations that still want this capability (most thought about being the USN, but they are not the only ones) might consider a modern vessel with heavier guns, say with 8" guns, as well as the capabilities of modern vessels and much smaller crewing requirements. Reactivating an Iowa would be a long and expensive process for such a job, the cruisers have all been scrapped.

Possible? And if so, what would they look like? I would guess that armoring is a pointless endeavor in such times (nobody does gun duels any more and modern anti-ship missiles are intended to punch through vessel hulls before detonating), but could they use Chobham armor in places as tanks do? Equipped with tons of missiles, like the arsenal ship ideas of the 1980s? What would you all do given such a design brief?
 

perfectgeneral

Donor
Monthly Donor
I'd have to recommend the five inch gun. Fifteen miles is far enough to hold tanks and land based artillery back. Once you have overlapping artillery on the beach head you can push further in.

Area fire? A barge full of dumb rockets. Cheap as chips.

In the pre-missile age (WW2) Heavy cruisers would have drained resources from lighter cruisers in greater numbers or from a few battlecruisers that could defend fleets in poor weather and keep up with aircraft carriers.
 

NothingNow

Banned
Possible?
Maybe.

And if so, what would they look like?
They'd probably look like a helicopter cruiser aft, since they might be expected to serve as flagships for anti-submarine missions as well, and would otherwise be fairly similar to a normal guided missile cruiser up front.

Barring that they'd either have a couple of standard sized Dual-purpose guns fore and aft, or if the extra range and firepower for NGFS were deemed necessary, something in the 8" range.

I doubt they'd displace more than 12,000 tonnes.

I would guess that armoring is a pointless endeavor in such times (nobody does gun duels any more and modern anti-ship missiles are intended to punch through vessel hulls before detonating), but could they use Chobham armor in places as tanks do? Equipped with tons of missiles, like the arsenal ship ideas of the 1980s? What would you all do given such a design brief?
A decent armor belt and well thought out compartmentalization would be good enough to survive most missile strikes, and it'd be operating inside a very good air defense network.

Admittedly, it definitely wouldn't be able to survive two hits from a conventional Kh-22/AS-4, but the only things actually capable of surviving a few hits from one of those mass a lot more than a standard cruiser.

Aside from that, it'd be equipped with a shit ton of VLS cells under armored shutters/blowout panels on a modern design, for a mix of SAMs and cruise missiles, with maybe a dozen ASROCs thrown in.
Also, an extremely comprehensive countermeasures suite, some lightweight torpedo tubes and an overbuilt CIWS system would be a matter of course.

The Helicopters might be able to deploy rockets and ASMs of their own, but that would likely be a rare occurrence.

In the pre-missile age (WW2) Heavy cruisers would have drained resources from lighter cruisers in greater numbers or from a few battlecruisers that could defend fleets in poor weather and keep up with aircraft carriers.

Heavy Cruisers were just as capable serving as fleet escorts, and were available in larger numbers than Battlecruisers, along with light cruisers, and dedicated CLAA designs.
Of course, none of them would be expected to last long against a Fast Battleship, which is why the US Navy tended to prefer adding a few Fast Battleships and heavy cruisers as escorts to any decent concentration of carriers.
 
From what I have read on many forums were actual military personnel discuss the options the 5 inch is fine but if you really want slightly longer ranged support etc just mount a 6 inch forward. The gun could very easily be a army design but the turret would need to be made specially for it . the extra range and shell weight would only be needed occasionally . alternatively mount a twin mlrs launcher on your amphibious ships with a deep magazine .
 
There is a saying "There are targets that can be taken out by 5in guns. There are targets that can't and they are taken out by aircraft." I can't see scenario where western navies will commit such ship in area wherethey don't have air superiority so really hard targets aren't really a problem. If such navy finds itself in sitation where they need to clear enemy from the beaches they'll simply use aircraft to do it.

Introducing new type of gun means additional logistical burden in order to achieve fairly limited improvement.
 
The so called "Heavy cruiser" is a thing of the past since the end of WW2, as more potend weaponsystems became available for naval warfare, including firesupport during amphibeous operations. There simply is no need for a large surface warship, with a large crew and armor as protection. A more logical sollution was to make more smaller vessels, especially the fast attack ship, with guided weapons, giving it the same firepower as a much larger older ship, for much less budget.

As for firesupport, there is no logic in building an expensive single purpose sort of ship anymore, as more multirole vessels are required, to save the defense budget. A corvette sized ship can do the job as good as any other vessel. Multirole ships are most flexible though, so a frigate, or destroyer is more likely to be seen in this role, especially the new DDX, of the USS Zumwalt type, which is indeed a sort of landattack specialist, though as good a multirole ship in other aspects.

More important, modern submarines carry landattack missiles quite often and can strike at long distances, almost undetected. Submarines basically have replaced the old big gun style capital ship in modern navies. The modern attack submarine is the modern capital ship, as it is the sort of warship, fitteed with the most potent weaponry. Surface warships are merely supportships of some sort, either as escorts protecting valuable ships, such as transports and aircraft carriers, or as coastal support vessels for inshore operations mostly. Submarines are mostly deep ocean going sort of vessels, capable of operating inshore as well.
 

Riain

Banned
It seems overkill to give a fire support ship 30kt speed and the rest, if you need guns why not just built a monitor?
 
I'm not sure about modern but in the late 1970's there was a proposed Strike Cruiser (CSGN) with Aegis, Tomahawks and all the other USN standard weaponry and two Mk.71 8in guns. With a displacement of around 17,000 tons they would have definitely qualified as heavy cruisers, and they were to be nuclear to boot.

http://en.wikipedia.org/wiki/Strike_cruiser
 

Delta Force

Banned
As for firesupport, there is no logic in building an expensive single purpose sort of ship anymore, as more multirole vessels are required, to save the defense budget. A corvette sized ship can do the job as good as any other vessel. Multirole ships are most flexible though, so a frigate, or destroyer is more likely to be seen in this role, especially the new DDX, of the USS Zumwalt type, which is indeed a sort of landattack specialist, though as good a multirole ship in other aspects.

A guided artillery shell shouldn't cost that much more than an aerial bomb, but such a system would give any equipped warship the means of carrying on a precision strike dozens and possibly even hundreds of miles inland without requiring aircraft to penetrate the airspace. A guided artillery shell is also cheaper than a cruise missile.

I'm talking about having such systems on destroyers and cruisers, and perhaps on a large cruiser with extensive systems for other purposes (think a Kiev class aircraft carrying cruiser or a Kirov class battlecruiser with guns).

It seems overkill to give a fire support ship 30kt speed and the rest, if you need guns why not just built a monitor?

It's an option to consider in the decade or two immediately following World War II, especially since guns (and especially turrets) larger than 8" haven't been built since then.

I'm not sure about modern but in the late 1970's there was a proposed Strike Cruiser (CSGN) with Aegis, Tomahawks and all the other USN standard weaponry and two Mk.71 8in guns. With a displacement of around 17,000 tons they would have definitely qualified as heavy cruisers, and they were to be nuclear to boot.

http://en.wikipedia.org/wiki/Strike_cruiser

Apparently the Long Beach would have been the prototype too, recieving Aegis and bow and stern 8"/55 Mark 71 guns. That would have been interesting.

Also, the 8"/55 Mark 71 was capable of replacing the 5"/54 Mark 45 on the Spruance class bow mount, was considered for the Ticonderoga, and could be mounted on the Arleigh Burke class at the cost of visibility and other issues.

Edit: Linked to wrong 5" gun.
 
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A guided artillery shell shouldn't cost that much more than an aerial bomb, but such a system would give any equipped warship the means of carrying on a precision strike dozens and possibly even hundreds of miles inland without requiring aircraft to penetrate the airspace. A guided artillery shell is also cheaper than a cruise missile.

I'm talking about having such systems on destroyers and cruisers, and perhaps on a large cruiser with extensive systems for other purposes (think a Kiev class aircraft carrying cruiser or a Kirov class battlecruiser with guns).



It's an option to consider in the decade or two immediately following World War II, especially since guns (and especially turrets) larger than 8" haven't been built since then.



Apparently the Long Beach would have been the prototype too, recieving Aegis and bow and stern 8"/55 Mark 71 guns. That would have been interesting.

Also, the 8"/55 Mark 71 was capable of replacing the 5"/54 Mark 45 on the Spruance class bow mount, was considered for the Ticonderoga, and could be mounted on the Arleigh Burke class at the cost of visibility and other issues.

Basically, there is NO NEED for gunfire of a magnitude simmilar to WW2 landings. Gunfire is not an issue, as landings are not going to be large scale and the landingcraft themselves give their own firesupport with light weapons in most cases, which on its own is sufficient, as the opposing forces lack such structures as seen in days long gone. Warfare itself is a moblie art, which exclude using fixed fortifications as such, rendering the big gun obsolete to start with.

So firesupport can indeed be done by either small arms fire, or by airopower on its own, rather than surfaceships, which have other roles to do in most cases. Only in cases of direct (artillery style) firesupport on nearby land, a landattack gunsystem will be useful, which is why the Zumwalt class was developped. In other cases, simply put ashore a detachement of Marines with large pieces of mortars, or howitzers and the job is done less expensive.
 
What would you all do given such a design brief?

I wouldn't build a cruiser. It's a high-cost, high-value target being asked to cruise slowly close to hostile shores.

Figure it's the Reagan era. 600 Ship Navy. I'm in the USMC and pitch the idea of an "experimental naval artillery platform".

It's going to be maybe a little bigger than a Forest Sherman class destroyer or Perry class frigate, so not terribly expensive. Probably borrow the sensor fit from the Perry. Machinery's limited to around 24-25 knots so it can keep up with the fastest amphib units.

Armament's along the lines of:

-2 x Mk. 71 8" fore and aft.
-1 or 2 x CIWS amidships
-1 x 8 Sea Sparrow amidships. If the ship lasts into the '90s, this and the CIWS might be replaced by a couple of RAM installations.
-Maybe 2 Bushmaster 30mm on the beam for anti-FAC defence.

No helicopter hanger, but possibly a pad amidships or right aft to receive a helicopter. No ASW ordnance. Armor is limited at best - something heavy enough to protect vital spaces from Soviet 30mm shells seen on many FAC.

We end up with a single-role warship, but a small and not terribly expensive one. It might have a peace-time role as a test-bed for new weapons systems. Might see use in Panama (1989), Kuwait/Iraq (1991), and Iraq (2003).
 

CalBear

Moderator
Donor
Monthly Donor

I'm not sure about modern but in the late 1970's there was a proposed Strike Cruiser (CSGN) with Aegis, Tomahawks and all the other USN standard weaponry and two Mk.71 8in guns. With a displacement of around 17,000 tons they would have definitely qualified as heavy cruisers, and they were to be nuclear to boot.

http://en.wikipedia.org/wiki/Strike_cruiser


Both the DDG-1000 and the proposed strike cruise are in the right ballpark, but what would be idea is a ship around 25,000 tons. 192 VLS cells, 4-6 of the 155mm/62 automatic guns, four 30mm Advanced Gun systems for anti-boat work and four CIWS point defense.

Nuclear propulsion isn't likely, the costs related to deactivation have reached the point that it almost costs more to scrap the hull than it cost to build the bare hull. It only make economic sense to put reactors into CVN (where they are pretty much required to operate a CATOBAR ship) and SSN/SSBN.

Problem, of course, is that this sort of ship would go an easy $2.5 Billion a pop and you would need at least one for every LHD/LHA, probably two.
 
I have to agree with the general skepticism about support cruisers, and twhile I do have a soft spot for the Mk 71 it is definitely a hard sell at this point. Whatever the caliber I really see the future of gunfire support at this point being larger numbers of smaller general purpose ships. A cluster of frigates or destroyers is a lot more flexible than a few cruisers with the same armament clustered on fewer hulls.

As far as the USN specifically there are a LOT of Burke's, and when they start retiring a proper frigate seems the best way to provide fire support. I think there is a place for a cruiser still, but as a preferably nuclear, air warfare oriented vessels designed to relieve destroyers from escort and ballistic missile defense operations. Honestly even this seems unlikely to happen with even more Burke's ordered and the Ohio class replacement seemingly poised to eat most of the naval budget for the near future.
 

Riain

Banned
I'd like the 6" gun fitted to HMS Tiger and Blake to see widespread use throughout the RN in single mountings.
 

Delta Force

Banned
Basically, there is NO NEED for gunfire of a magnitude simmilar to WW2 landings. Gunfire is not an issue, as landings are not going to be large scale and the landingcraft themselves give their own firesupport with light weapons in most cases, which on its own is sufficient, as the opposing forces lack such structures as seen in days long gone. Warfare itself is a moblie art, which exclude using fixed fortifications as such, rendering the big gun obsolete to start with.

So firesupport can indeed be done by either small arms fire, or by airopower on its own, rather than surfaceships, which have other roles to do in most cases. Only in cases of direct (artillery style) firesupport on nearby land, a landattack gunsystem will be useful, which is why the Zumwalt class was developped. In other cases, simply put ashore a detachement of Marines with large pieces of mortars, or howitzers and the job is done less expensive.

Most USN ships can equip either the 5" mount or the 8" mount (or at least could have been designed to do so). It's thus more of a question of the USN continuing to use 5" guns, or moving to 6" or 8" for greater firepower and commonality with the Army (at least historically, now only foreign operators use the 8").
 
Both the DDG-1000 and the proposed strike cruise are in the right ballpark, but what would be idea is a ship around 25,000 tons. 192 VLS cells, 4-6 of the 155mm/62 automatic guns, four 30mm Advanced Gun systems for anti-boat work and four CIWS point defence.
Problem, of course, is that this sort of ship would go an easy $2.5 Billion a pop and you would need at least one for every LHD/LHA, probably two.

Isn't 25,000 in capital ship territory ? (as is $2.5 billion :eek:)

Not really Modern Heavy Cruisers ?
would a smaller ship be better with,
1x155mm
2xCIWS
VLS (small number but deep)
Slow (ie. LHD/LHA speed)

This could be built in numbers and you might be willing to risk it near a shore you need to attack.

JSB
 
My take is electromagnetic 'guns' are closer than we might think. Their performance advantages over traditional chemical propellant guns, and some missiles will render a lot of the points here irrelevant.

For traditional cannon those in the 12 to 15 cm caliber are best for modern NGF. Those can be PGM as well as any ordnance, have a higher RoF than the larger calibers, and good range. While the power of a 20 or 30cm projectile is cool that can be had more efficiently with a missile or aircraft ordnance.
 

Driftless

Donor
My take is electromagnetic 'guns' are closer than we might think. Their performance advantages over traditional chemical propellant guns, and some missiles will render a lot of the points here irrelevant.

For traditional cannon those in the 12 to 15 cm caliber are best for modern NGF. Those can be PGM as well as any ordnance, have a higher RoF than the larger calibers, and good range. While the power of a 20 or 30cm projectile is cool that can be had more efficiently with a missile or aircraft ordnance.

What are the primary targets of the E-guns? Aircraft, other ships, shore targets, all of the above?
 
I dont think high speed targets like aicraft will be practical in the near term. Range & kinetic energy are two advantages to electric guns. But, the high projectile velocity makes fine guidance problematic.
 
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