Surcouf:  3 rounds per minute

HE M1927 - 273.0 lbs. (123.82 kg)
HE M19?? - 263.9 lbs. (119.72 kg)

1) Actual projectile designations:
       APC M1927 - Opf Mle 1927
       APC M19?? - Opf Mle 19??
       APC M1936 - Opf Mle 1936
       HE M1927 - OEA Mle 1927
       HE M19?? - OEA Ml2 19??

2) APC M1936 added a dye bag in 1939. Colors were assigned as follows:
       Duquesne - red
       Tourville - yellow
       Suffren - green
       Others - N/A

3) The propellant charge was in halves.

Cruiser Three-gun Turret
  C5 and St. Louis (3):  N/A

Submarine Twin Mounting
   Surcouf (1):  Model 1929

Model 1931:  about 220 tons (240 mt)

Model 1929:  N/A

Model 1929:  -5 / +30 degrees

Model 1929:  N/A

Model 1929:  about +11 / -11 degrees

Model 1929:  N/A

1) The cruiser mountings used catapult rammers cocked by the recoil forces to load projectiles while propellant charges were loaded by hand.  Guns were individually sleeved.  Each gun used a 30 hp elevating electric motor and the guns could be coupled together.  Turrets used a 22.5 hp electric training motor with hydraulic drive and were equipped for RPC for training during the mid-1930s refits.  However, RPC for elevation was not added.  Shell rooms were generally below the magazines, except for some bow mountings which were on the same level.  Dredger hoists from the magazines ran up to a working chamber where ammunition was transferred to the upper cage hoists which each carried a projectile and two half charges.  Upper hoists ended on the outside of the guns and were transferred by swinging arms which were locked to the guns for loading.

2) Model 1929 could open fire within 2.5 minutes after Surcouf surfaced.

3) Model 1924 gun axes were 74 in (188 cm) apart while those in Model 1929 were about 104 in (264 cm) apart.

4) The weight differences are mainly due to armor thickness, which "French Cruisers:  1922 - 1956" list as follows:

Duquesne and Suffren classes
   Front - 1.2 in (3 cm)
   Sides - 1.2 in (3 cm)
   Roof - 1.2 in (3 cm)
   Rear - 1.2 in (3 cm)
This protection was comprised of two 0.6 in (1.5 cm) HT plates riveted together.

Algérie
   Front - 3.9 in (10 cm)
   Sides - 2.8 in (7 cm)
   Roof - 2.8 in (7 cm)
   Rear - 1.96 - 3.3 in (5 - 8.5 cm)
   Floor - 1.6 in (4 cm)

5) In 1939 and 1940, the French started the design process for the cruisers that would replace the Duguay-Trouin class.  The 1939 design was known as "C5" and was for a Treaty Cruiser about the same displacement as Algérie but having nine 203 mm guns in three gun turrets.  The start of the war ended all treaty restrictions and in 1940 a more ambitious nine-gun design of about 15,000 tons known as "St. Louis" was under consideration, but little more than some preliminary sketches were completed before the June 1940 Armistice halted all work.