Post WW1 French Cruiser designs

[Tzoli]

I've found this article in the Warship International, Vol. 23, No. 2 (1986) about the French light cruiser development of 1910-1926:

All these discussions and reflections were finally brought to a conclusion in a note dated 25 February 1920 in which the Chief of the General Staff (now Admiral Salaun) requests the Minister to ". . . withdraw Project 171 and replace it with a new one." A few days previously he had consulted the Naval Constructor's Department (note dated 21 February, 1920) in order to ascertain the displacement of the cruisers if speeds were raised to 32, 34 or 36 knots, all other conditions remaining unchanged. The department replied on 23 March: 6,300 tons for 32 knots 7,500 tons for 34 knots and 9,000 tons for 36 knots. At the same time, it was indicated that the 7,500 ton-cruiser would have dimensions of 175m x length X 5.80m draft with 1,400 tons of oil fuel giving a range of 2,600 nautical miles at 15 knots and 155mm armament. In fact, the Design Department also had provided for other variants: 8,000 tons with 164.7mm armament and 12,000 tons with 240mm. . . . Design studies were actually started for two of these variants, the 7,500 and 12,000 ton designs. The 8,000 ton cruiser of the Duguay-Trouin/Lamotte- Picquet class of 1922 was already being foreshadowed. Attention was also being given to the definition of a first stage of construction on which the C.S.M . would have to give its views. There were three possible schemes, depending on the period in which construction was possible:
- if 3 years: 3 cruisers of at least 6,000 tons, 12 destroyers of 2,000 tons and 10 submarines of 1 ,200 tons.
- if 4 years: 4 cruisers, 12 destroyers, 12 submarines and an aircraft carrier.
- if 5 years: same as for 4 years plus 12 destroyers of 1,200 tons.

Question:
Does anybody know more info on these 7.500, 9.000 and 12.000ton cruiser proposals? Especially on the 164,7 and 240mm armed versions?

Note:
Project 171 mentioned above was the updated Lamotte-Picquet class scout cruiser now light cruiser design of 1919 incorporating WW1 experience and desired mission for the post war French fleet:
Dimensions: 145 (pp) x 146,3 (oa) x 14,5 x 5,2 meters
Displacement: 5.270tons (standard)
Armour: unknown
Engines: 54.000shp Guyot du Temple), 2 shafts
Speed: 56km/h (30knots)
Armaments:
4x2 138mm/55 Modèle 1910 guns,
4x1 75mm/50 Modèle 1920 AA Guns,
4x3 533mm Torpedo Tubes

 

[Dilandu]

Unfortunately it seems that those cruisers - like the 40.000-ton 1920s battleship with 45-cm Mle.20 guns - are lost in history, and only could be speculated upon...

 

[Dilandu]

I've found this article in the Warship International, Vol. 23, No. 2 (1986) about the French light cruiser development of 1910-1926:

All these discussions and reflections were finally brought to a conclusion in a note dated 25 February 1920 in which the Chief of the General Staff (now Admiral Salaun) requests the Minister to ". . . withdraw Project 171 and replace it with a new one." A few days previously he had consulted the Naval Constructor's Department (note dated 21 February, 1920) in order to ascertain the displacement of the cruisers if speeds were raised to 32, 34 or 36 knots, all other conditions remaining unchanged. The department replied on 23 March: 6,300 tons for 32 knots 7,500 tons for 34 knots and 9,000 tons for 36 knots. At the same time, it was indicated that the 7,500 ton-cruiser would have dimensions of 175m x length X 5.80m draft with 1,400 tons of oil fuel giving a range of 2,600 nautical miles at 15 knots and 155mm armament. In fact, the Design Department also had provided for other variants: 8,000 tons with 164.7mm armament and 12,000 tons with 240mm. . . .

Hm, considering that the speed of no less than 32 knots was deemed essential for all cruiser proposals, I wonder how they planned to put 240-mm guns into 12.000 tons. Some kind of enlarged Duguay-Trouin, with twin 155-mm guns replaced by 240-mm singles?

 

[Tzoli]

Without armour or like the 20mm of the Duguay-Trouin 4x2 might be the maximum or go to mini early French Deutschland with two triple turrets