How Germany used clever engineering to bypass naval treaties
In short: In the 1920s, the Treaty of Versailles strictly limited German naval power. Yet, through radical innovations like all-diesel propulsion and advanced welding, a new class of warships emerged that effectively bypassed these restrictions, earning them the nickname 'pocket battleships' from the British.
Following World War I, the Reichsmarine was constrained by the Treaty of Versailles, which limited its capital ship tonnage and prohibited the replacement of older battleships until they reached twenty years of age. To avoid provoking the Allies, German designers opted for a 28 cm gun caliber, staying within the technical bounds of the era while working around the French occupation of the Ruhr, which had hindered large-scale artillery production.
The resulting Deutschland-class ships—comprising the Deutschland, Admiral Scheer, and Admiral Graf Spee—were a masterpiece of loophole engineering. While officially stated to displace only 10,000 long tons to comply with treaty limits, their actual standard displacement ranged from 10,600 to 12,340 long tons. The designers utilized significant weight-saving innovations, such as using welding for over 90 percent of the hulls instead of traditional riveting, which reduced hull weight by 15 percent. This allowed for heavier armament and armor.
The ships featured a radical all-diesel propulsion system using MAN engines, a first for major warships. This provided immense range; the Deutschland could travel up to 17,400 nautical miles at 13 knots. However, the class's history was marked by intense political struggle. In the 1928 elections, Social Democrats campaigned with the slogan 'Food not Panzerkreuzer' to oppose the construction, but a majority was eventually elected to authorize the ships. These vessels would later serve in the Spanish Civil War and see significant action in the Atlantic and the Arctic during World War II.
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- Summary by Intellect · source: Deutschland-class cruiser
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