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Symon
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RE: Alternative Cruiser Design Theory

Post by Symon »

ORIGINAL: Terminus
Oh, and would the USN adopt a Guerre de Course strategy in the first place? This kinda conflicts with Mahan's fleet-in-being approach and could be considered the strategy of a "weak" naval power.
Ok, since you ask; No. Guerre de Course was in the lexicon of GB, France (to a very limited extent), Italy (ok, to a pathetic degree). Guerre de Course was a function of MISSION, hello, knock, knock, mission? What are you building ships for? What do you want them to do? Hello, knock, knock, Mahan? US was not interested in Guerre de Course tactics because it didn't have the kind infrastructure that a Guerre de Course attack would concern itself with (whistling in the wind yeah, but we're talking 1920-40).

So who is building cruisers, and for what purpose? Why the heck does anyone build a warship? And for what purpose? I think Terminus has the right outlook. If you don’t have a serious operational deployment scheme for a vessel, and a vessel designed to carry out that deployment scheme,then the results are nothing but an expensive target for a more thoughtful Naval power.

Sorry. JWE
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Terminus
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RE: Alternative Cruiser Design Theory

Post by Terminus »

If it hadn't been for the treaties, I think the US would have built battleline units in the 20's, and then woken up in about 1930 and realized they didn't have a scouting arm for the fleet.

IRL, they began in the very late 20's, but that was due to the treaty-imposed building freeze; even the United States only had so much building capacity in the 20's, so they couldn't just lay down what they wanted.

And again, this is peacetime; where's the money coming from? Is Prohibition in effect? We might not have a Depression, but Prohibition did bad things to the US economy as well.

If it were my mod, I'd start constructing cruisers in the early 30's.

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oldman45
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RE: Alternative Cruiser Design Theory

Post by oldman45 »

OK JWE, I am going to do some "light" reading tonight with my favorite adult beverage and I have a funny feeling that in the end of that, I will come to the conclusion that everything you wrote makes sense. [;)] I do need to improve my library with topics about naval theory between the wars, thanks for the links John and Term.


John, that was interesting reading and it did actually make sense and flesh your post out. Term the article you pointed out makes a good argument for the cruiser killer and I really can't think of a better one than a 14" or 15" armed BC.
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JuanG
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RE: Alternative Cruiser Design Theory

Post by JuanG »

Thanks for the input John, insightful as always. 'Outer space' mod or not, I'm certain it is always appreciated. And as Terminus pointed out, Gary clearly intends to use a form of realistic logic to the development of his navies, even if the economic or political factors are handwaved away.
ORIGINAL: Symon
So I would stretch out cruisers a bit and fit them with the new hi-T/hi-P plants and fill them up with 6” because they are more flexible than 8” and gun power doesn’t seem to matter much, but the 6” designs are much less expensive. The Treasury thanks me. And obviously none of these are designed to take their place in the battle line. That is not their mission.

With regards to this, how would the non-availability of a rapid fire 6in like the US 6in/47 change your decisions? If the choice was between say the British 8in/50 Mk8 vs the 6in/50 Mk22 or the Japanese 8in/50 3YT vs the 15cm/50 41YT?

If this sort of scenario leads the UK and Japan to adopt 8in or something else, how likely do you think the US will be move to this standard simply to not 'get left behind' (even though we know that the 6in cruisers were just as effective in wartime).
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RE: Alternative Cruiser Design Theory

Post by GaryChildress »

OK. So here's a building plan a little more along the lines of JWE's projections. First off, though, directly after the Omahas, the US goes a little retro and builds two 10" armored cruisers as replacements for the Tennessees. Unfortunately the design quickly proves no more satisfactory than the Tennessees and only 2 ships are completed before the class is canceled. These of course will most likely find themselves in the Asiatic Fleet on Dec 7, 1941. Not much else to use them for. So this goes a little along with Oldman45's projection for the development of the armored cruiser.

Next come the Northamptons, 8 ships with only 8 x 6" guns designed for trade protection. Cheap inexpensive but generally stronger than destroyers. Soon after the development of the trade protection cruisers we get the first 12" cruiser killers, designed to seek out and destroy weaker trade protection cruisers. After that we get a somewhat larger 6" cruisers class with the San Francisco class, still 6" but with 12 guns instead of just 8. Then we come to the pinnacle of 6" with the St. Louis class, 15 x 6" guns.

Once war becomes inevitable the Clevelands with enhanced AA go into production. Also we have the wartime Atlanta class cruiser killers. Finally there's the Baltimore class with 8" guns instead of 6".

So we have a preponderance of the 6" as JWE projects, relatively cheap and easy to build. Yes I have a rather large number of cruiser killers but that's just me. I like large cruisers like Oldman45 likes Battlecruisers. NOTE: The US will also have 2 battlecruisers of the Lexington class. The remaining 4 Lexingtons will be converted into carriers once everyone realizes their shortcomings and figures out an alternative use for them.



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traskott
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RE: Alternative Cruiser Design Theory

Post by traskott »

I'm an amateur but I think we should consider others reason to build or not to build X or Y type of ship: prestige ( "Naval powers have 10' cruiser, let's go to build them" ) or build it "because my main enemy has built it, so just in case", so perhaps we have to design all the fleets ( british, netherland and american ) together...

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Terminus
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RE: Alternative Cruiser Design Theory

Post by Terminus »

Welp, that requires going back to immediately after WWI. The different nations need cruisers for different reasons, as John noted above:

UK: scouting, trade protection, colonial duties
US: scouting, colonial duties
Japan: scoutng, commerce raiding, torpedo attack, destroyer leader
France: scouting, commerce raiding, trade protection, colonial duties
Netherlands: scouting, trade protection, colonial duties

Note that in the advent of war, trade protection duties would partly be taken up by AMCs (since there'll never be enough cruisers). Also, the duty of cruisers would gradually drift into air defence only.
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oldman45
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RE: Alternative Cruiser Design Theory

Post by oldman45 »

Gary, are the Clevelands a typo? I don't see a reason to build 15 6" guns in '34 then drop down to 8 6" in '42. The San Fransisco and Saint Louis are your killer CL's!!
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Terminus
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RE: Alternative Cruiser Design Theory

Post by Terminus »

Well, IRL the US dropped from 15 down to 12 6", because 15 was overgunned.
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oldman45
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RE: Alternative Cruiser Design Theory

Post by oldman45 »

I think it was due to ship handling not being over gunned, but I don't think they would build a class of 15 gun, then 12 gun, and finally down to 8 guns. The 12 gun Cl was very powerful and I since I read that piece JWE pointed to, could take on a typical 8" gun cruiser.
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Terminus
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RE: Alternative Cruiser Design Theory

Post by Terminus »

Ship handling due to too many tubes, as well as the fact that they reached the point of diminishing returns with tubes 13 through 15. Also, the 15-tubers sucked up ammo like nobody's business.
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Don Bowen
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RE: Alternative Cruiser Design Theory

Post by Don Bowen »


Friedman is a good source for US cruiser designs between World War I and the onset of cruiser limitations.

The perceived missions were escort of the battle line, scouting, attack (these three with DD Flotillas), plus protection of line of communications.

If the wartime BB/BC programs had been completed the number of cruisers required would have been very high. Somewhere over 70 units, depending on planning. Up to 20 of these for line-of-communications.

Early designs revolved around three general types:
1. Improved Omaha with centerline 6inch twin turrets.
2. Smaller Destroyer Leaders with single 6inch in traditional Destroyer layout.
3. Larger "Hawkins replies" of up to 10,000 tons with twin 8inch on the centerline.

This last set of designs resembled the eventual Pensacola layout.

I believe that, unfettered by treaties, the USN would have produced these three types in quantity. Growth in size would have been inevitable, due to both endurance considerations and responses to foreign designs. Both 6inch and 8inch variations would grow to Baltimore/Cleveland size during the 1930s.

There is no evidence of interest in larger caliber main guns. Any such interest would have been suppressed by the treaties, of course.

I believe USN cruiser development would have followed pretty much historical lines, with increases in size and armor but not necessarily main gun caliber.

Desire for increases in main gun caliber would come primarily as replies to foreign construction (real or imagined).
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Symon
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RE: Alternative Cruiser Design Theory

Post by Symon »

ORIGINAL: JuanG
With regards to this, how would the non-availability of a rapid fire 6in like the US 6in/47 change your decisions? If the choice was between say the British 8in/50 Mk8 vs the 6in/50 Mk22 or the Japanese 8in/50 3YT vs the 15cm/50 41YT?

If this sort of scenario leads the UK and Japan to adopt 8in or something else, how likely do you think the US will be move to this standard simply to not 'get left behind' (even though we know that the 6in cruisers were just as effective in wartime).
Hi Juan,
Well, just looking at guns in a vacuum, I would have to agree with you; bigger is indeed better, in many ways, but size has its own consquences [;)]. Think Don has it right, that people would build 6” cruisers, qua cruisers, in quantity, because the missions require lots of them. So I would still predict gobs of 6-8,000 tonners (which can be built in quantity) with 6” guns (because of weight and the need for high endurance). These would be flotilla leaders, tactical fleet scouts, trade patrol/protection, and far foreign station vessels; classic cruiser missions.

8” guns would grow the sizes (i.e., can’t build as many) and increase the weight (i.e., require more HP and/or reduce endurance and habitability). IIrc the Brits wanted to scrap the Hawkins class in 1919 as unsuitable for post-war service. They finished them anyway (as an economy measure !), but didn’t they refit one or two of them as ordinary 6” light cruisers?

I do agree that some people would play around with 8” cruisers, but wonder if development of that whole category wasn’t “spawned” by the Treaty and then shoehorned into a mission after the fact. I truly believe this whole idea of heavily armored 8" gun cruisers was a Treaty artifact, and had no definable tactical or strategic purpose. Wasn’t the 8”/50 Mk VIII designed specifically for the UK Treaty cruisers? With impossible-to-achieve weight/train/rof requirements and a defective barrel design?

Gun/mount/turret design is based on the ship design. In the absence of Treaty cruisers, would the 8”/50 Mk VIII exist? Or would ordnance development concentrate on better mountings, higher velocities, higher rofs, more capable projectiles, for ships/guns constituting the vast majority of a nation’s cruiser capability? Perhaps, given the changed circumstances, the 6”/47 Mk16 (designed 1932) would have arrived a few years sooner. It wasn’t much different from the 6”/53 Mk15 of the Omahas, but had a redesigned breech capable of receiving semi-fixed ammo, and adaptable to “super heavy” projectiles. Rof is mount design and it’s way easier to do that within a 6” paradigm as opposed to an 8”.

Ok, that’s my story and I’m sticking to it [:D].

Ciao, John
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Terminus
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RE: Alternative Cruiser Design Theory

Post by Terminus »

The Hawkins class was very much the red-headed stepchild of the interwar RN cruiser fleet. At the beginning of the war, their armament suites were all over the place, with only Frobisher having something resembling its original fit.

Hawkins had four single 4in guns (basically an oversized gunboat), Effingham had nine single 6in guns with 4 4in singles as secondaries (Hawkins' primaries) and Frobisher had the original five 7.5-inchers.
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Terminus
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RE: Alternative Cruiser Design Theory

Post by Terminus »

As for the 8-inch gun, the thought of a RN cruiser fleet built around it actually dates back to 1921, driven by increasing sizes of cruiser designs in the US and Japan.
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oldman45
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RE: Alternative Cruiser Design Theory

Post by oldman45 »

Term, that is why we can't really have a discussion of the US classes without creating the Japanese and UK lines.
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Terminus
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RE: Alternative Cruiser Design Theory

Post by Terminus »

We don't disagree.
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GaryChildress
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RE: Alternative Cruiser Design Theory

Post by GaryChildress »

ORIGINAL: oldman45

Gary, are the Clevelands a typo? I don't see a reason to build 15 6" guns in '34 then drop down to 8 6" in '42. The San Fransisco and Saint Louis are your killer CL's!!

No Typo, the 6" guns on the Clevelands are 6in/47 automatic DP guns a la Worcester class. The gun design was proposed by the Bureau of Ordinance in 1937, so hopefully 1942 is not too early for them.
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RE: Alternative Cruiser Design Theory

Post by GaryChildress »

ORIGINAL: oldman45

Term, that is why we can't really have a discussion of the US classes without creating the Japanese and UK lines.

Been working on those a little too. I'll introduce them soon. I'm sure it will cause a re-evaluation of the US building program.
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ny59giants
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RE: Alternative Cruiser Design Theory

Post by ny59giants »

I finished reading Kaigun a few months ago. Would Japan or another nation start to increase the size and firepower of their cruisers to be able to get in and damage the WW1 era or early 20s BB and then have the speed to run away?? Since Japanese doctrine was to force a decisive battle, would they want to be able to damage enough BBs or other large warships that the Americans would be forced to leave them behind?? If these question were true, how big would a cruiser have to be??
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