Dreadnoughts from Around the World (1905-14): 1915

Renown’s triple 4-inch secondary mounts provide one clue in the speculative case for a heavier-gunned cancelled Agincourt design.

Renown’s cited 32-knot speed gave the class the tactical freedom expected of a battlecruiser and sharpens the contrast with Courageous and Glorious.

The sudden supply of triple 4-inch mounts, 18-inch guns, and small-tube boilers points to capital-ship work begun before Britain’s wartime designs were finalized.

The balanced Renown design and the lightly armed Courageous class reveal what Britain gave up in its wartime capital-ship choices.

France’s unbuilt Lyon-class proposal retained 13.4-inch guns while offering a distinctive late-prewar battleship design.

The probable Queen Elizabeth repeat is separated from a more advanced Agincourt hypothesis, showing how historians handle stories built around slivers of evidence.

Gun development, wartime building priorities, crewing alternatives, and hull changes explain why Agincourt might have been more complex than a repeated Queen Elizabeth.

New Mexico’s twelve 14-inch guns turn the British advantage in 15-inch calibre into a practical comparison of shell size and gun numbers.

Ise’s six twin turrets could divide their twelve 14-inch guns among several opponents, reflecting Japanese expectations of fighting outnumbered.

The episode contrasts British and German dreadnought totals to show how construction capacity shaped the naval balance in 1915.

Britain accepted that Dreadnought would erase much of its pre-dreadnought advantage because the United States, Italy, and Japan threatened to seize the technological lead.

The planned South Dakota class and a British 18-inch-gun concept show that Anglo-American competition centred on design capability as well as fleet totals.

The episode connects pre-war capital-ship competition to export markets and the industrial infrastructure needed to build advanced warships.

A British all-forward 18-inch-gun concept fit a broadside battle line better than the flexible task-force warfare emerging beyond the North Sea.

Nelson and Rodney’s speed and all-forward battery made them awkward fleet-end ships, while the South Dakota concept offered more flexible all-round gunfire.