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Submarine-wise, 1918 had 80 + 156 submarines, including the M class "sub-cruisers". We won't talk about WW1-era aircraft carriers (or planes for that matter). (Worst case, they use the helicopters to ferry marines over and take the ships the olde-fashionede way.) Each can carry, say, 6 AGM-158 air-to-surface cruise missiles, for another 216 hits assuming that 1000lb warhead can penetrate armor. On the other hand 2019 has the Queen Elizabeth with 24-36 F-35Bs and 14 helicopters. The modern Royal Navy doesn't really look like it's set up to take on a large surface fleet. So on the theory that 1918 battleships and cruisers are immune to 4.5" guns and that if you throw enough shells at something, you'll eventually kill it, in the surface warfare front, I'm going out on a limb and give 1918 the nod. (And I am too lazy to add up the losses.) (The WW1 RN has a significant advantage in torpedo numbers, anyway.) During the war, they built 21 battleships, 32 cruisers, and 232 destroyers. The 4.5" gun ( ) probably doesn't have the heft to penetrate the armor, although you probably wouldn't want to be in the superstructure of a 1918 era ship.Īccording to, in 1914 the RN had 82 battleships (pre-dreadnoughts, dreadnoughts, and battlecruisers (dammit, those are cruisers, not battleships)), 136 cruisers of various flavors, 142 destroyers, and 80 torpedo boats. Each destroyer and frigate has 8 Harpoon anti-ship missiles, for a total of 152 ships down.
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