Abortive class of British Royal Navy battlecruisers
A 1:96 scale model of a G3 battlecruiser
Class overview
Name
G3
Operators
Royal Navy
Preceded by
Admiral class
Succeeded by
None
Planned
4
Completed
0
Cancelled
4
General characteristics (as of November 1921)
Type
Battlecruiser
Displacement
48,400 long tons (49,200 t) (normal)
53,909 long tons (54,774 t) (deep load)
Length
856 ft (260.9 m)
Beam
106 ft (32.3 m)
Draught
35 ft 8 in (10.9 m) (at deep load)
Installed power
20 small-tube boilers
160,000 shp (120,000 kW)
Propulsion
4 shafts; 4 geared steam turbines
Speed
32 knots (59 km/h; 37 mph)
Range
7,000 nautical miles (13,000 km; 8,100 mi) at 16 knots (30 km/h; 18 mph)
Complement
1,716
Armament
3 × triple 16 in (406 mm) guns
8 × twin 6 in (152 mm) guns guns
6 × single 4.7-inch (120 mm) AA guns
4 × 8-barrel 2-pdr (40 mm (1.6 in)) mountings
2 × 24.5-inch (622 mm) torpedo tubes
Armour
Belt: 12–14 in (305–356 mm)
Deck: 3–8 in (76–203 mm)
Barbettes: 11–14 in (279–356 mm)
Turrets: 8–17.5 in (203–444 mm)
Conning tower: 8 in (203 mm)
Bulkheads: 10–12 in (254–305 mm)
The G3 class was a class of battlecruisers planned by the Royal Navy after the end of World War I in response to naval expansion programmes by the United States and Japan. The four ships of this class would have been larger, faster and more heavily armed than any existing battleship (although several projected foreign ships would be larger). The G3s have been considered to be proper "fast battleships" since they were well-balanced designs with adequate protection. Nonetheless the class was officially designated as a "battlecruiser" due to their higher speed and lesser firepower and armour relative to the planned N3-class battleship design. The G3s would have carried nine 16-inch (406 mm) guns and were expected to achieve 32 knots (59 km/h; 37 mph), while the N3s would carry nine 18-inch (457 mm) guns on the same displacement at the expense of speed.[1]
The G3 design was approved by the Board of Admiralty on 12 August 1921. Orders were placed in October, but were suspended in mid-November shortly after the beginning of the Washington Naval Conference which limited battleship sizes. The orders were cancelled in February 1922 with the ratification of the Washington Naval Treaty which limited construction to ships of no more than 35,000 long tons (36,000 t) displacement.
The G3 class was a class of battlecruisers planned by the Royal Navy after the end of World War I in response to naval expansion programmes by the United...
planned to build the G3 class, which had the same armament and armour as battleships of the time and were rated as battlecruisers only by comparison to...
(military staff) G3battlecruiser, a post First World War design for the Royal Navy that was curtailed by the Washington Naval Treaty G3 (NATO), the Assistant...
(pennant number 51) was a battlecruiser of the Royal Navy (RN). Hood was the first of the planned four Admiral-class battlecruisers to be built during the...
post-war battlecruiser race came with the British response to the Amagi and Lexington types: four 48,000-long-ton (49,000 t) G3battlecruisers. Royal Navy...
remained roughly the same. The design was superseded by the I3 and G3battlecruiser designs, as both mounted a heavier main armament, and further improved...
Japan, and the United States all considered new battlecruiser construction, including the British G3 class, the Japanese Amagi class, and a revised version...
and G3battlecruiser but further reduced to come under the weight limit. Nine BL 16 inch Mk I guns – the same as were to have been used on the G3 battlecruisers...
on the G3 design, was a battlecruiser only in relation to the paired N3 battleship. The planned N3-class battleships and G3-class battlecruisers were both...
The Nelson-class battleship, incorporating many concepts from the G3battlecruiser, was the first design to include a dual-purpose secondary battery,...
absolute minimum, a further eight battleships. These would have been the G3battlecruisers, with 16-inch guns and high speed, and the N3-class battleships, with...
(59 km/h; 37 mph), 16-inch (406 mm) gunned G3 class both of some 48,000 tons. Officially described as battlecruisers, the G3s were far better protected than...
began campaigning for a ship building program, proposing building the G3battlecruisers. Such proposals were unpopular and viewed as unnecessarily expensive...
Global Information
Royal Navy