The N3 battleship was a planned battleship for the Royal Navy after World War I. They were never built because of the Washington Naval Treaty signed in 1921 which prevented an arms race between the major naval powers. HMS Victory in 1884 Battleship was the name given to the most powerfully gun-armed and most heavily armored warships between the 15th and 20th Centuries. ... The Royal Navy of the United Kingdom is the senior service of the British armed services, being the oldest of its three branches. ... Combatants Entente Powers Central Powers Commanders {{{commander1}}} {{{commander2}}} Strength {{{strength1}}} {{{strength2}}} Casualties > 5 million military deaths > 3 million military deaths {{{notes}}} World War I, also known as the First World War and (before 1939) the Great War, the War of the Nations, War to End All Wars, was a world... The Washington Naval Treaty limited the naval armaments of its five signatories. ...

In the post War period the Royal Navy was faced with the task of trying to maintain a superiority over the other major nations Japan and the USA, who had the resources and intention to create equivalent or better navies. The Great War had taken its toll of the Imperial economy and although large in numbers the Royal Navy included many older designs.

The N3 design was directly related to the G3 battlecruiser drawn up at the same time in that they were both built with similar ideas in mind and it used the same layout of the main guns being disposed to the front of the ship. However while the G3 was expected to achieve a fast 32 knots and was armed with 16 inch guns, the equally sized but heavier N3 battleships would carry much larger armament - 18 inch guns - but at the expense of a slower speed. The G3 battlecruisers were a design of battlecruiser planned for the British Royal Navy after the First World War. ...

Since the G3 were given greater priority than the N3, the latter were never even named before cancellation. It has been suggested that if they had been built they would have been named after the four patron saints of the countries of the United Kingdom - St Andrew, St David, St George, and St Patrick. In several forms of Christianity, but especially in Roman Catholicism, a patron saint has special affinity for a trade or group. ... Saint Andrew (Greek: Andreas, manly), the Christian Apostle, brother of Saint Peter, was born at Bethsaida on the Lake of Galilee. ... Saint David (c. ... For alternate uses, see Saint George (disambiguation) Saint George on horseback rides alongside a wounded dragon being led by a princess, late 19th century engraving. ... Statue of Saint Patrick Saint Patrick (died March 17, 462, 492, or 493), is the patron saint of Ireland. ...

Planned specification

• Displacement: 48,000-tons
• Length: 815 feet
• Beam:106 ft
• Draught: 33 ft
• Machinery: two shafts, 56,000 shp
• Speed: 23.5 knots
• Armour:
  • Belt: 15 inches
  • Deck: 8 inches
  • Barbettes: 15 inches
• Armament
  • Main: 9 x 18 inch /L45 in three turrets
  • Secondary: 16 6 inch guns in 8 twin turrets
  • 6 HA 4.7 inch guns
  • 4 ten-barrel 2 pdr pom-pom mounts
  • 2 24.5 inch underwater torpedo tubes
• Aircraft: 2 for spotting and recconaissance

A barbette is the fixed area underneath a rotating gun turret on a warship. ... A pom-pon is an antiaircraft gun. ...