The 203 mm/50 Model 1924 armed France's treaty cruisers and the submarine Surcouf. Heavy ammunition helped hold practical cruiser output to about four or five rounds per minute rather than the planned five or six, while Surcouf's projected three-round rate was even less credible. Barrel life was around 600 rounds, so wear constrained sustained gunnery. Research by John Jordan and Jean Moulin shows that Algerie used the same 50-calibre gun, correcting older claims that she carried a 55-calibre weapon. Ammunition handling, wear, and careful source comparison reveal more about performance than the headline calibre alone.
Chapter · 10:59-16:58
The 203 mm Model 1924 gun and its real performance
Gun weight, ammunition handling, barrel life, and newer research explain both the weapon's practical rate of fire and a long-running Algerie misconception.