The battleship that was 'cut down' by a global arms treaty

Wars & Conflicts · Published 16 October 2026 · Updated 25 October 2026 Swipe more like this →

In short: In the 1920s, the British Royal Navy planned to build the most powerful warships ever seen. Then, a global treaty forced them to shrink those designs overnight. The result was the Nelson-class: a radical, compromised masterpiece of engineering that traded speed for raw, concentrated firepower.

The Nelson-class battleships, HMS Nelson and HMS Rodney, were born from the Washington Naval Treaty of 1922. This agreement halted a burgeoning arms race by capping battleship displacement at 35,000 tons and limiting guns to 16 inches. To stay under these limits while maintaining heavy protection, the British had to abandon their plans for massive, high-speed vessels. Due to treaty-imposed limitations, these vessels earned the 'Cherry Tree' moniker as their specifications were significantly reduced.

To save weight, designers moved all three of the ships' main gun turrets forward of the bridge. This shortened the 'armoured citadel'—the vital core of the ship—allowing for thicker protection on the remaining hull. However, this layout meant the 'X' turret could not fire directly forward or aft. To compensate for the loss of speed caused by the heavy armor, the hull was designed with a highly efficient hydrodynamic form. The ships also featured innovative internal torpedo bulges that didn't count toward the treaty's 'dry' weight limits, a clever loophole the British secured by arguing their ships needed extra fuel and water for imperial service.

The ships were famous for their massive, octagonal superstructure, nicknamed 'Queen Anne's Mansions.' While it provided excellent working space, it also created significant 'weather helm,' making the ships behave like they had a permanent sail set in high winds. Despite these quirks, the Nelsons proved effective in World War II. HMS Rodney famously contributed an estimated 100 to 130 hits during the sinking of the Bismarck in 1941, and both ships survived the war before being scrapped in 1948–1949.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?

Related

• The battleship designed to fit a treaty that became a symbol of naval compromise.
• The British battleship designed to survive the end of treaties
• The last British pre-dreadnoughts were obsolete before they even entered the Royal Navy's service.
• The treaty-bound battleship that survived the hunt for the Bismarck
• The battleship designed to be economical became a naval workhorse
• A downed Japanese pilot sparked a week-long battle on a remote Hawaiian island.
• The Navy Cross: How a World War I Necessity Became a Symbol of Heroism
• How a 1926 Coup Triggered a Civil War and Decades of American Military Involvement
• The Naval Battle of Guadalcanal was fought at terrifyingly close, point-blank range
• How one man's unauthorized trades collapsed Britain’s oldest merchant bank
• How a failed imperial restoration triggered the rise of China's chaotic Warlord Era
• The missile that hunts tanks from above by predicting your next move

More in World wars era · More in Wars & Conflicts · Latest · A–Z · All topics