Archibald

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... instead of re-inventing the wheel in the 70's.

The idea is to blend together, Zumwalt "cheaper decks" (SCS / VSS / CVV) and the too few carrier designs from Europe. To bolster NATO fleets on one side, and the USN on the other - more flattops on both sides of the Atlantic.

That is, adapting...
- Invincible-class for SCS (20 000 tons)
- Clemenceau / Verdun class for the VSS - VSTOL Suport Ship (30 000 tons)
- CVA-01 for CVV (55 000 tons + )

With some serious VSTOL aircraft pornfest on the ships - CL-84 AEW, naval AH-56 Cheyenne, Harriers and Convair 200.

thought ?
 
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Zumwalt would get fired the second he proposes this. Maybe an Invincible based SCS would work, the others are complete nonstarters. Especially the CVA-01 design. The American CVV design was the same size, roughly, as CVA-01 and carried more aircraft (65 max compared to 50 max). And don't forget the very strong "not invented here" aspect.
 
And don't forget the Garibaldi/Principe de Asturias as small Harrier Carriers for USMC....

Joke, yes? Considering that the Principe de Asturias is exactly the USN's Sea Control Ship design with a ski jump added and some minor system tweaks.
Absolutely not, I was puzzled why it was left out of the previous list...
 
I know, alas, that CVA-01 was the proverbial camel - a horse designed by a committee...
This suppose an ATL where the french build PA58 and the british didn't failed CVA-01... Zumwalt become CNO in 1970.

The NIH is a major obstacle for sure.
 
And don't forget the Garibaldi/Principe de Asturias as small Harrier Carriers for USMC....

Joke, yes? Considering that the Principe de Asturias is exactly the USN's Sea Control Ship design with a ski jump added and some minor system tweaks.
Absolutely not, I was puzzled why it was left out of the previous list...

Because the premise was to replace proposed US designs with European ones. PdA was derived the USN's (unbuilt) SCS design, the one Archibald proposed replacing with the British Invincible.

The whole thing makes little sense to me. The USN was never going to buy all of those designs. Getting any one of them would have been quite a.point of departure. And adopting European designs just wasn't plausible. Everything from damage control to accomodations to propulsion would be different.

IMO the more interesting alternative is one where the USN buys one or two of these (possibly a smaller attack carrier and the SCS as an ASW escort carrier) and then aggressively subsidizes or promotes them to European navies.
 
Because the premise was to replace proposed US designs with European ones. PdA was derived the USN's (unbuilt) SCS design, the one Archibald proposed replacing with the British Invincible.
Ok understood, anyway it left room for the Garibaldi design that was derived from Vosper Thornycroft "Harrier Carrier" even if enlarged.
 
IMO the more interesting alternative is one where the USN buys one or two of these (possibly a smaller attack carrier and the SCS as an ASW escort carrier) and then aggressively subsidizes or promotes them to European navies.
I'll be fine with that, really !
 
Because the premise was to replace proposed US designs with European ones. PdA was derived the USN's (unbuilt) SCS design, the one Archibald proposed replacing with the British Invincible.
Ok understood, anyway it left room for the Garibaldi design that was derived from Vosper Thornycroft "Harrier Carrier" even if enlarged.
I have never heard that the GG was based on the VT Harrier Carrier although thinking about it I can see it.
 
... instead of re-inventing the wheel in the 70's.

The idea is to blend together, Zumwalt "cheaper decks" (SCS / VSS / CVV) and the too few carrier designs from Europe. To bolster NATO fleets on one side, and the USN on the other - more flattops on both sides of the Atlantic.

That is, adapting...
- Invincible-class for SCS (20 000 tons)
- Clemenceau / Verdun class for the VSS - VSTOL Suport Ship (30 000 tons)
- CVA-01 for CVV (55 000 tons + )

With some serious VSTOL aircraft pornfest on the ships - CL-84 AEW, naval AH-56 Cheyenne, Harriers and Convair 200.

thought ?
Running with the idea,

Invincible had an air wing of 22, which is a few less than a WW2 CVE. Either 4 Sea Kings and 18 Harriers or 10 Sea Kings and 12 Harriers. For simplicity I'm going to go with 22 and not worry about spotting factors. I'd say the ship wing would be 4 - let's call them MH-56 - ASW/SAR/SUW helicopters, and 4-6 (I'm leaning to 6) EV-84 AEW, just to ensure an EV-84 could be on station all the time. That leaves around 12 aircraft that can vary by mission.

ASW I'd say either all 12 as MH-56, or 4 MH-56 and 8 SV-84 ASW aircraft. I'm basing 8 partly on a Canadian report that said a ship would need 8 Sea Kings to keep two in the air at all times for ASW, but only for a two week period. In order to do it indefinitely they would need 15. Sixteen MH-56s would result in 2 in the air indefinitely, 8 MH-56 and 8 SH-84 would mean you could keep two of each in the air continuously (along with one EH-84) for a two week surge, say across the Atlantic and back for an escort mission.

Sea Control, probably 12 FV-200s. The 4 MH-56 would be plane guards and QR ASW, 6 EV-84s for constant air cover, and 12 FV-200s for CAP or, more likely, deck launched intercept. Hang harpoons on them and they could do SUW strike as well. I don't know how much CAS or BAI the FV-200s were expected to do, but for this mission I don't think it's really necessary. I don't think I would carry AV-8s on them unless they were operating in a pair, with one providing air cover with FV-200s and the other supporting troops ashore with AV-8s.

Clemanceau has an air wing of around 40, or a few more than a WW2 CVE. If we stick with the 4 MH-56 and 6 EV-84 ship detachment, that leaves 30 aircraft for mission wings. I'd add 12 FV-200s to the base, leaving 18 for an ASW wing, or a CAS detachment of AV-8s, or additional FV-200s for a fleet air defense mission, since 30 FV-200s would be enough for a CAP along with DLI. This is enough aircraft to do anything a Casablanca or Commencement Bay could do, as well as having use as a fleet carrier for air defense and SUW strike. I would leave off the CATOBAR equipment though and keep it a pure VSTOL CV.

CVA-01 is the real conundrum. CVV was designed to be a Midway replacement with an air wing of 60, including everything in the Navy, which means F-14s and S-3s the Midway's couldn't carry. If it can handle F-14s, then CVA-01 could replace the CVV. If it can't, I'm not sure I'd want it. So let's say it can. Base wing would be 4 MV-54s, 6 EV-84s or E-2s, and 12 F-14s. That leaves 28 aircraft to vary by mission. CVA-01 was meant to carry 18 ea of F-4s and Buccaneers, so how about 16 F-14s
with 16 Buccaneers/A-6E/A-7E, and 8 S-3s? Or drop the attack aircraft and replace them with ASW assets (MH-54/S-3/SV-84) for ASW escort? If you did that they could replace the Essex CVSs, freeing up deck and hangar space on CV/CVNs for more fighter and attack aircraft since they could offload the S-3s. Although you could do that with Clemanceaus as well, although with SV-84 rather than S-3s.

*****

I don't think having 4 carrier classes would be ideal. I think I would rather have Kitty-Hawks than CVA-01s, but VSTOL Clemanceau vs. Invincible is less clear cut. If you could get two or more Invincibles for the price of one Clemanceau I would go with those, if less than two to one, Clemanceaus. In either case the intended mission set would be the CVE one, perhaps with CVS as well to free up another fighter or attack squadron for CVs by offloading their ASW assets. Build them in a large enough class to get them to other NATO and non-NATO allies, UK and France, but Canada, Spain, Italy, the Netherlands, and Australia would be also be natural fits. Japan might be hampered by it's constitution.
 
Aviation & marine International September 1979

Vickers Macship
Helicopter/Aircraft carrier cruiser
Displacement: 12,500 t

Vosper Harrier Carrier
Lightweight aircraft carrier
Dispalcement: 7,200 t full load
img674-jpg.115937


img675-jpg.115939



Vosper Thornycroft Harrier Carrier

The first ship ever to be conceived and laid out specially for the Harrier is the 1975/76 project by Vosper Thornycroft Ltd.

"Vosper studies 'Harrier Carrier'", Flight International, 25 September 1975
http://www.flightglobal.com/pdfarchive/view/1975/1975 - 1959.html


A new design proposed by Vosper Thornycroft, in conjunction with the
Hawker Siddeley Aviation Company, is for a completely new type of warship:
a vessel of frigate size (6,000 tons) with a carrier deck capable
of launching either eight Sea Harrier VSTOL (vertical short take-off and
landing) aircraft, or eight Sea King antisubmarine helicopters, or any
mix totaling eight aircraft. The ship is, in essence, a small version
of the Invincible, and for that reason may bring the cost within reach
of many navies that could not otherwise afford the larger vessel.
The following Table gives the principal data about the proposed vessel,
which is called a Harrier Carrier:

CAPTION: Source: British Ministry of Defense
vthc_table-png.624902


(Last two images are from Triton's original post)
vtharriercarrier-jpg.79807

uk-vt-harrier-carrier_1-jpg.79801
 
I have a weird soft spot for the Harrier Carrier.
Maybe it's the whole dollhouse thing about tiny ships...?

Though I do wonder if a version without ski-jump and focused on Helicopters might have utility.

Arguably if your state's navy doesn't have drydocks for ships larger than a modern Destroyer.....then this makes sense.
 
folks,
Just wanted you to know that all these carrier threads I started (or posted in) are related to some kind of "meta timeline" in the making.

The pitch (not entirely serious, and very much a pretext for a carrier wank TBFH) have some nazis adding Kockums-like AIP to Type XXI submarines in 1945, and then going into hiding for a decade. Preparing the "revenge".
Then a day of 1956 all hell breaks lose.

Basically their AIP submarines start playing havoc with international maritime traffic, paralyzing it.
They also have limited SAM capability to screw air traffic over the Atlantic. Perhaps with evolved Me-163 or Bachem Natters launched from ramps and recovered... by parachutes.

Only AIP or nuclear submarines could run after them, but by 1956 there are not many of them except Nautilus.

As I said, this is a pretext for a "carrier wank".

In phase 1, the USN, RN and their allies makes an all-out, huge effort to get as many carrier decks as feasible. Meanwhile any available battleship and cruiser is given heavy SAM (for air defense) and cruise missiles (Regulus).

Phase 1 manages to get 72 decks & carriers in three categories - small, medium, and large
10 000 to 25 000 tons
> 25000 to 45 000 tons
> above 50 000 tons.
The small ones reveive N-156N for limited air defense.
The medium ones have Crusader, Skylancer, and Super Tiger
The heaviest have Crusader III and Phantom.

In Phase 2 (late 60's) because of the losses and because the old decks are badly aging...
Zumwalt steps in, with the following merge-ups
- Small > SCS & Invincible / Asturias / Doria
- Medium > Verdun & VSS
- Heavy: CVA-01 / CVV
 
Because the premise was to replace proposed US designs with European ones. PdA was derived the USN's (unbuilt) SCS design, the one Archibald proposed replacing with the British Invincible.
Ok understood, anyway it left room for the Garibaldi design that was derived from Vosper Thornycroft "Harrier Carrier" even if enlarged.
I never knew the Garibaldi design that was derived from Vosper Thornycroft "Harrier Carrier".

P.S. as a side note archipeppe,
would you have any information that pertains to this design/selection of the Vosper Thornycroft "Harrier Carrier" as the basis of the Garibaldi?
If so and if permissible, could you PM me such information please?

Grazie
Pioneer
 
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Yes, the Protean concept is interesting. Although, I could easily imagine elements within the USN using it's 'comerical-based' design and build as an argument against it's survivability against the Soviet's anti-ship doctrine......
I also think, then as now, many within the USN see 'cheap'/'affordable' as both evil and nasty.

Regards
Pioneer
 
P.S. as a side note archipeppe,
would you have any information that pertains to this design/selection of the Vosper Thornycroft "Harrier Carrier" as the basis of the Garibaldi?
If so and if permissible, could you PM me such information please?
Dear Pioneer,

I have to check in my library.
Anyway, most of the information about the development of the GG are related to the political rather than the technical/design side.
If I will find something about it I will share with you.

On the other side is very clear the path that Fincantieri took in moving from Garibaldi 2, to NUM to the actual Cavour.
 
P.S. as a side note archipeppe,
would you have any information that pertains to this design/selection of the Vosper Thornycroft "Harrier Carrier" as the basis of the Garibaldi?
If so and if permissible, could you PM me such information please?
Dear Pioneer,

I have to check in my library.
Anyway, most of the information about the development of the GG are related to the political rather than the technical/design side.
If I will find something about it I will share with you.

On the other side is very clear the path that Fincantieri took in moving from Garibaldi 2, to NUM to the actual Cavour.
Thank you, I'd much appreciate that.

Regards
Pioneer
 
... instead of re-inventing the wheel in the 70's.

The idea is to blend together, Zumwalt "cheaper decks" (SCS / VSS / CVV) and the too few carrier designs from Europe. To bolster NATO fleets on one side, and the USN on the other - more flattops on both sides of the Atlantic.

That is, adapting...
- Invincible-class for SCS (20 000 tons)
- Clemenceau / Verdun class for the VSS - VSTOL Support Ship (30 000 tons)
- CVA-01 for CVV (55 000 tons + )

With some serious VSTOL aircraft pornfest on the ships - CL-84 AEW, naval AH-56 Cheyenne, Harriers and Convair 200.

Thoughts?
Because the premise was to replace proposed US designs with European ones. PdA was derived the USN's (unbuilt) SCS design, the one Archibald proposed replacing with the British Invincible.

The whole thing makes little sense to me. The USN was never going to buy all of those designs. Getting any one of them would have been quite a point of departure. And adopting European designs just wasn't plausible. Everything from damage control to accommodations to propulsion would be different.

IMO the more interesting alternative is one where the USN buys one or two of these (possibly a smaller attack carrier and the SCS as an ASW escort carrier) and then aggressively subsidizes or promotes them to European navies.
Although @TomS wasn't replying directly to @Archibald he's more or less said what I wanted to say in reply to the Opening Post. Which is...

I think that the time and money required to modify those designs to suit the USN's requirements would have been the same as the time and money required to design the SCS, VSS and CVV in the first place.

For example Invincible instead of the SCS.
  1. Machinery. They'll have to redesign it around four LM2500 gas turbines instead of four Olympus gas turbines.
  2. Weapons. It will have Sea Sparrow or Standard MR instead of Sea Dart.
  3. Electronics and Sensors. This includes, but is not limited to, the Command, Control & Communications equipment, NTDS instead of ADAWS, American sonars instead of British sonars and American radars instead of British radars, e.g. SPS-48 instead of Type 1022.
And in the case of Clemenceau/Verdun in place of the VSS the USN would want gas turbines instead of steam turbines and the changes required to do that may well produce a ship closer to the VSS as designed than Clemenceau/Verdun.

In the case of CVA.01 instead of the CVV it is more likely that the USN would adapt the SCB.100 design. Although, by the time they'd finished adapting it SCB.100 might be the CVV as designed in the "real world" in all but name.

I very much doubt that they'd be any quicker or cheaper to build. That's partially because I'm a believer in the theory that "steel is cheap and air is free". The machinery (e.g. a LM2500 gas turbine), weapons (e.g. Standard MR), electronics (e.g. NTDS) and sensors (a SPS-48 radar) will cost the same whether they're fitted to a redesigned European hull or a bespoke American hull.

Building the designs "off the shelf" i.e. with no changes to suit USN requirements and no American equipment instead of European equipment would produce non-standard ships which would cost more to operate.

Furthermore, it's all moot because Congress didn't let the USN buy any of the bespoke designs produced in the "real world" and it won't let them buy any of the modified European designs "in this version of history". If Congress was prepared to spend more money on the US Armed Forces "in this version of history" the USN would spend its portion of the extra money on the "real world" designs and to paraphrase the last sentence of the post by @TomS the USN would aggressively subsidize or promote the American designs of the "real world" to European navies.

However, if Congress was prepared to spend more money on the US Armed Forces in the 1970s I suspect that the USN would use its portion of the extra money to build as many extra Nimitz class as possible. Preferably, three so they could maintain a force of 15 carrier battle groups instead of the "real world" reduction from 15 to 12.

By the way I appreciate that it's not just the cost of the extra aircraft carriers and their aircraft. It also the cost of the extra escorts, extra auxiliaries and extra shore facilities, e.g. expanding the training schools to train the extra crews. However, 3 CVBGs built around 3 CVVs would require them too. Plus I believe (but don't know) that the USN proved that a CVV wasn't significantly cheaper to build and operate than a Nimitz and that's why Congress rejected President Carter's request for a CVV and authorised Theodore Roosevelt in its place. I repeat that's what I believe, but don't know, because I haven't checked it, so please be gentle with me if that statement isn't 100% correct.

If there was any money left after that the USN would want to have enough 20-knot amphibious shipping to transport one MAF & one MAB and preferably two MAFs so 9 Tarawa class would be built instead of 5. And if any money was left after than buy enough SSNs to maintain a force of 100 instead of 90. Or vice versa, that is 100 SSNs first and then more amphibious ships.

To summarise the USN would expand (or more accurately not contract) to as close to the 600 Ship Navy as the extra money would allow.
 
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I know, alas, that CVA-01 was the proverbial camel - a horse designed by a committee...
Which would die of thirst first? My money's on the horse.

To paraphrase Burt Kwouk in "The Water Margin."
The Director of Naval Construction said, "Do not despise the CVA.01 for being a camel, for who is to say that it won't kick more ass than a horse?"
For what it's worth the actual quote was.
The ancient sages said, "Do not despise the snake for having no horns, for who is to say it will not become a dragon?"
 
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snark#1:
US would struggle with French design as that wine cellarage would be needed for training-file binders...
snark#2:
I loved the 'Water Margin' series because it was so funny, intentionally or otherwise... (Sorta slapstick take on 'Robin Hood' myths !!)
snark#3:
Yes, CVA was a sorta-mule. IMHO, calling it a camel was unfair, as they, dromedaries and horses each have their own failings. But, IIRC, a cross-bred 'Dromel' was tougher, easier-going and much more biddable, so widely used as 'beasts of burden'. Equivalent of the 'Forty-Mule Mining Trains'. Camels & Droms got the 'cavalry' kudos, 'Dromels' hauled the logistics, logistics, logistics.....
/

Just clawing clear of first major cold / U/L_RI infection of season, which has had me up every 1½~~2 hours every night for a lonnnnng week to de-snot streaming sinuses, cough up lungs, navigate 'brain-zonk' from sufficient anti-histamines to mitigate (!!) symptoms.
Oh, and, some-when, I mega-coughed while turning, wrenched long thigh muscle, one you use to stand...

Today was sorta 'First Day of Spring': My sinuses are almost clear, my lungs don't burble, my thigh doesn't 'bite' and my blood-oxygen has recovered to 'sea level' after week at 'Everest Base Camp'...
 
... instead of re-inventing the wheel in the 70's.

The idea is to blend together, Zumwalt "cheaper decks" (SCS / VSS / CVV) and the too few carrier designs from Europe. To bolster NATO fleets on one side, and the USN on the other - more flattops on both sides of the Atlantic.

That is, adapting...
- Invincible-class for SCS (20 000 tons)
- Clemenceau / Verdun class for the VSS - VSTOL Support Ship (30 000 tons)
- CVA-01 for CVV (55 000 tons + )

With some serious VSTOL aircraft pornfest on the ships - CL-84 AEW, naval AH-56 Cheyenne, Harriers and Convair 200.

Thoughts?
Your analogues are skew-whiff.
  • Garibaldi is the closest to a European equivalent to the SCS.
  • Invincible is closer to the VSS than the SCS.
  • I think some "creative accounting" was employed when the French DNC calculated the displacement of PA58 because it's dimensions are similar to CVA.01 and the CVV. If not that, it would have been "lightly built".
This is arranged by waterline length. The shortest ships are at the top and longest are at the bottom.

Comparison of Aircraft Carriers CVV, SCS, VSS and European analouges.png

If you see any silly mistakes please inform me via a PM and I will make the necessary corrections.

Added 09.10.22 for Clarification

I don't believe that PA58 Verdun would have displaced as much as CVV and CVA.01 that is I don not believe that the ship would have had a standard displacement in the range of 45,000 to 53,000 tons and a full load displacement in the range of 59,000 to 63,000 tons.

What I to believe is that the standard and full load displacements would have been several thousand tons more than what's in Conway's 1947-95. My guess is that they would have been in the region of 40,000 tons and 50,000 tons respectively.
 
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snark#2:
I loved the 'Water Margin' series because it was so funny, intentionally or otherwise... (Sorta slapstick take on 'Robin Hood' myths !!)
For what it's worth I thought "Monkey" was the intentionally funny one.
 
The difference is PA 58 is a scaled up Clemenceau, mostly length wise. Very similar to the modernised Essex class in terms of overall dimensions. (Might be useful in fact to add Oriskany to your table)

PA 58’s flight deck remained much smaller than CVA-01 or CVV, which had much beamier hulls to support the larger deck.

1664987973176.png
 
Link to Post 26.
The displacements and beam for Clemenceau in my table are from Conway's 1947-1995. I used Conway's as the primary source for all the ships in the table the sake of consistency and only used Chesneau and Friedman (in that order) to "fill the gaps" which were some of the waterline lengths and beams (waterline and extreme).

However, I think some of the information for Clemenceau in Conway's is wrong. This is because Chesneau says standard displacement 22,000 tons (like Conway's) but 31,000 tons full load and 98ft 5in waterline beam.

The text in Chesneau says that the design was tight and in an effort to reduce topweight the armament, first modified from 24 x 57mm to 12 x 3.9in, was cut to 8 x 3.9in. However, stability was still a problem, and the second carrier Foch had to be bulged before completion and Clemenceau received bulges in a refit. Chesneau says that the bulges increased the waterline beam to 104ft 1in, which is nearly the beam quoted in Conway's. This is interesting because PA58 was 7.69% beamier than PA54 after bulging but 13.80% beamier before. The text in Conway's does say that bulges were fitted to both ships but doesn't say what the the beam was before they were fitted or how this altered the displacement of the ships. Chesneau also says that the displacements in 1982 were 27,307 tons standard and 32,780 tons full load, the latter figure being the same as the full load displacement in Conway's.

I'm thinking that it was originally 98ft 5in waterline beam with displacements of 22,000 tons standard and 31,000 tons full load before the bulges were fitted and 104ft 1in waterline beam with displacements of 27,307 tons standard and 32,780 tons full load after they were bulged. Does that sound plausible?

I remember reading somewhere that Clemenceau and Foch were lightly built. However, I can't remember where, so it might be a case of false memory syndrome.

For what it's worth PA58's waterline beam was 12.50% narrower than the CVV and 8.93% narrower than the CVA.01.

I'm sticking to my assertion that PA58 was closer to being an analogue to CVV and CVA.01 rather than @Archibald's claim that it was an analogue to VSS. After allowing for what you wrote about the differences between PA54 and PA58 I still think that the standard and full load displacements for the latter ship are too low.

I took the SCB-27C Essex out of the table because @Archibald didn't mention it in the Opening Post so it was irrelevant to the topic and I still think so. With hindsight the ship that should have been in the table was Principe de Asturias because it was about 30 feet longer than the standard SCS.
 
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With hindsight the ship that should have been in the table was Principe de Asturias because it was about 50 feet longer that the standard SCS.

Jane's and Combat Fleets have LOA for PdA as just a hair under 640 ft, compared to 610 feet for SCS (in Friedman). I suspect that's mostly in the ramp.
 
For what it's worth the air groups of SCS, VSS and CVV were as follows.

SCS 19 aircraft - 3 AV-8A, 14 SH-3 and 2 LAMPS
VSS 26 aircraft - 4 AV-8B, 16 SH-53 and 6 LAMPS III
CVV 50 aircraft - 10 F-14A, 12 A-6D/E, 2 KA-6D, 4 EA-6B, 4 E-2C, 10 S-3A and 8 LAMPS III.

Source: Appendix E of U.S. Aircraft Carriers by Norman Friedman

The book says the CVV was to carry 10 SH-3A but I think it's a typo for 10 S-3A. However, the SH-53 Stallions instead of SH-3 Sea Kings isn't a typo because it says SH-53 in Chapter 16 "Postwar ASW Carriers".

Appendix E doesn't have any information on either of the SCB-100 designs. However, Table 16-1 "Selected CVS Studies" on Page 348 says SCB-100.68 had an air group of 47 aircraft (20 S-2, 16 SH-3, 2 UH-2, 1 C-2, 4 E-2 and 4 A-4) which apart from the C-2 and E-2 in place of the C-1 and E-1 was the same size and composition as a contemporary CVS. The table said SCB-100.71 had a total of 47 aircraft but not what its composition would be. My guess is that it would have been the same as SCB-100.68.

For comparison the early 1980s air group of a Midway was 70 aircraft (24 F-4J, 24 A-7E, 10 A-6E, 4 KA-6D, 4 EA-6B and 4 E-2C) and the "Supers" had air groups of 86 aircraft (24 F-14A or F-4J, 24 A-7E, 10 A-6E, 4 KA-6D, 4 EA-6B, 4 E-2C, 10 S-3A and 6 SH-3H). The source is "An Illustrated Guide to the Modern US Navy" by John Jordan, Salamander, 1982.
 
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I'm thinking that it was originally 98ft 5in waterline beam with displacements of 22,000 tons standard and 31,000 tons full load before the bulges were fitted and 104ft 1in waterline beam with displacements of 27,307 tons standard and 32,780 tons full load after they were bulged. Does that sound plausible?

Yes. The exact waterline beam for Clemenceau was 29.3m / 96ft 2in before bulges. Clemenceau had the bulges added on 1966, Foch had them added during construction.

Design displacement was 24,200 tW.
 
Clemenceau has no Gallery deck over the hanger if memory serves. This is why they can get away with deck edge lifts and a beam of ultimately 104.1ft.

Assuming Verdun is the same explains how they can keep beam down to 112ft or so. This also helps explain why it's displacement is just 45,000tons deep load.

CVA-01 has a Gallery Deck over the hanger and so to have deck edge lifts it's beam is 120ft+
Result it's displacement is greater.
 
I should probably start a new thread but I think this is sufficiently relevant to the topic.
In the 1960s NATO had US, Dutch and Canadian ASW carriers (CVS) equipped with Grumman S2 aircraft.
The replacement for the S2 was the S3 Viking which as we know ended up being carried on US aircraft carriers in the 1970s.
Canada and the UK replaced their ASW fixed wing aircraft with helicopters. Other NATO countries added helicopters too.
Spain and later Italy joined the UK in adding a small number of Harriers to the airgroup of their small ASW carriers.
The USN introduced the SH60 helicopter in the 80s on to most of its escorts built after 1973 as well as its big aircraft carriers.
So by 1985 there were more than enough ASW assets (if you add the large numbers of land based aircraft too).
The large ASW escort (Spruance or Type 22) with helicopters made the Sea Control Ship (SCS) force unnecessary.
Without the Vietnam War the US might have found the money for purpose built replacements for its ASW Essex class CVS force equipped with S2 Vikings and helicopters plus a small number of fighters.
VSTOL looked great in artwork but the practical difficulties took years to overcome and even now the V22 Osprey seems a poor substitute for pure fixed wing or rotary equivalents.
The problem associated with the LHA Tarawa class in costs and building delays would probably have plagued your Zumwalt ships too.
But let us imagine a 1970s where NATO has decided on a carrier to replace the Canadian, Dutch and Italian ASW ships and the Essex CVS force. Would France and the UK have joined such a programme rather than building their own designs? Seems unlikely unless the design had started before 1966 in the case of the UK or 1973 for France (PH75?).
A carrier designed in 1963 to replace the Essexes, the two ex UK carriers in Canada and Netherlands and to meet UK requirements for an Escort Cruiser and France's to replace Arromanche plus add a carrier to the Italian Navy would have been a difficult ship to compromise on.
 
Clemenceau has no Gallery deck over the hanger if memory serves. This is why they can get away with deck edge lifts and a beam of ultimately 104.1ft.

Assuming Verdun is the same explains how they can keep beam down to 112ft or so. This also helps explain why it's displacement is just 45,000tons deep load.

CVA-01 has a Gallery Deck over the hanger and so to have deck edge lifts it's beam is 120ft+
Result it's displacement is greater.
On the other hand Clemenceau's hangar clearance was 23ft and CVA.01's was 18ft. Assuming that Verdun's was the same or greater that might cancel out the advantage of not having a gallery deck.

To make myself absolutely clear. I'm not saying that Verdun would have displaced as much as a CVV or CVA.01. I'm saying that what's in the reference books seems to be too low.

E.g. the entry on Invincible in Conway's says her displacements were 16,000 tons standard and 19,500 tons full load. However, a footnote says.
It has been suggested that these figures are intentionally misleading. If her standard displacement is 19,500t as is suspected, her full load tonnage will be about 23,000t.
The displacements in the table are the displacements according to the footnote.
 
The book says the CVV was to carry 10 SH-3A but I think it's a typo for 10 S-3A.

Definitely. One, the SH-3A was pretty well obsolete by the time CVV was conceived. Second, we have some contemporaneous articles that do specify S-3A.

It might have been a typo for SH-3H.

I though S-3A was more likely because the "supers" carried 10 Vikings and 6 Sea Kings helicopters so I thought it was more likely to be 10 S-3A and the 8 LAMPS III helicopters instead of the Sea Kings.
 
The value of the super carriers once they acquired ASW aircraft was that they could be defended by concentric rings of defence. A fast moving aircraft carrier and its task group in open sea was a hard target to kill or disable.
The closer the task groups had to go to Norway or Japan the more vulnerable they became.
The three British ASW carriers and their T42/22 escorts were much more useful to SACLANT than a solitary CVA01 as they could both hunt Soviet subs and attract aircraft and surface ships away from the two Carrier Striking Groups.
The Japanese maritime self defence force had a similar set of ASW cruisers and air cover from JASDF F15s.
In the Mediterranean Italy provided three cruisers and by the end of the Cold War it and Spain had ASW carriers.
The US Navy was fortunate in the different techniques of its key allies.
An updated Essex class carrier able to operate with the Striking Fleet or in the Pacific might have added S3 and ASW helos but arguably more Nimitz carriers were a better investment as only the US could afford them.
France as usual went its own way. The Foch and Clemenceau were not assigned to NATO but clearly would have been at sea (one in the Eastern Atlantic and one in the Med) providing a headache to Soviet surface forces in particular.
The big Super Frelon ASW helo could only be embarked in Jean d'Arc in her wartime role. Not sure how many?
Helicopters were less widely spread than in the RN or USN as the Suffren destroyers, the one off Aconit, older destroyers and A69 avisos did not have hangars.
 
The Japanese maritime self defence force had a similar set of ASW cruisers and air cover from JASDF F15s.

I would not put the Haruna and Shirane DDHs in anything like the same class as the Invincibles. Possibly similar in roles, but not in capacity (even a pair of them operating together are only 6 Sea Kings, and I'm not sure if that's how they planned to use them). Only the new 16DDH and 22DDH are in that category.
 
The JMSDF line up in the Cold War had destroyers with ASW helos as well as ASROC in addition to the 4 helicopter ships.. It was pretty focussed on ASW as well as a large force of modern conventional subs.
 
The Japanese maritime self defence force had a similar set of ASW cruisers and air cover from JASDF F15s.

I would not put the Haruna and Shirane DDHs in anything like the same class as the Invincibles. Possibly similar in roles, but not in capacity (even a pair of them operating together are only 6 Sea Kings, and I'm not sure if that's how they planned to use them). Only the new 16DDH and 22DDH are in that category.
The Haruna and Shirane can be lumped with the Vittorio and Andrea Doria classes. Built for ASW warfare but with hefty SAM defences - only the Japanese DDH had ASROC.
Japan of course did consider a 'flattop' DDH in the 1970s (as referenced elsewhere on this forum) but politically that was unobtainable. It was more or less a VSS in capability.
 

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