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Great Britain's Flag

Great Britain's Naval Guns

Main Armament

  8" BL Mk VIII, Mk VIII*
Caliber 8"
Length of gun 34' 5.1"
Length of bore 50 cal
Rate of Fire 6 rpm
Rifling 48 grooves
1 turn / 30 cal
Elevation 50° - 70°
Traverse  
Muzzle Velocity 2,775'/sec
Range of shell 29,200 yards
Shell weight 256 lb
Barrel Life  
Weight of Mounting 210 tons
  7.5" BL Mk VI
Caliber 7.5"
Length of gun 29' 1.2"
Length of bore 45 cal
28' 1.5"
Rate of Fire 3 - 4 rpm
Rifling 44 grooves
1 turn / 30 cal
Elevation 30°
Traverse  
Muzzle Velocity 2,827'/sec
Range of shell 21,400 yards
Shell weight 200 lb, 204 lb
Barrel Life  
Weight of Mounting  
  6" BL Mk XII
Caliber 6"
Length of gun 23' 3.73"
Length of bore 45 cal
22' 6"
Rate of Fire 4 - 7 rpm
Rifling 36 grooves
1 turn / 30 cal
Elevation 15° - 40°
Traverse  
Muzzle Velocity 2,825'/sec - 2,940'/sec
Range of shell 13,500 yards - 20,600 yards
Shell weight 100 lb
Barrel Life  
Weight of Mounting 7 tons - 19 tons
  6" BL Mk XXIII
Caliber 6"
Length of gun 25' 9.8"
Length of bore 50 cal
25'
Rate of Fire 8 rpm
Rifling 36 grooves
1 turn in 30 cal
Elevation 45°
Traverse  
Muzzle Velocity 2,760'/sec
Range of shell 24,800 yards
Shell weight 112 lb
Barrel Life  
Weight of Mounting 135 tons
  6" QF Mk N5
Caliber 6"
Length of gun 26' 3"
Length of bore 50 cal
25'
Rate of Fire 20 rpm
Rifling 36 grooves
1 turn in 25 cal
Elevation 78.5°
Traverse  
Muzzle Velocity 2,520'/sec
Range of shell 25,000 yards
Shell weight 129.75 lb
Barrel Life  
Weight of Mounting 156 tons
  5.25" QF Mk I
Caliber 5.25"
Length of gun 22' 11.5"
Length of bore 50 cal
21' 10"
Rate of Fire 7 - 8 rpm
Rifling 36 grooves
1 turn in 30 cal
Elevation 70°, 80°
Traverse  
Muzzle Velocity 2,780'/sec
Range of shell 23,400 yards
Height of shell 29,544', 46,500'
14,170 m
Shell weight 80 lb
Barrel Life  
Weight of Mounting  
  5" L/38 QF Mk 12 (USA)
Caliber 5"
Length of gun  
Length of bore 38 cal
15' 10"
Rate of Fire  
Rifling 1 turn in 30 cal
Elevation 85°
Traverse  
Muzzle Velocity 2,600'/sec
Range of shell at 45° 18,200 yards
Height of shell at 85° 37,200'
Shell weight 55 lb
Barrel Life 4,600
Weight of Mounting  
  4.5" QF Mk I
Caliber 4.5"
Length of gun  
Length of bore 45 cal
16' 10"
Rate of Fire 12 rpm
Rifling  
Elevation 70°
Traverse  
Muzzle Velocity 2,350'/sec
Range of shell 19,900 yards
Height of shell 29,908'
Shell weight 55 lb
Barrel Life  
Weight of Mounting  

Heavy Anti-Aircraft Guns

  4" QF Mk V and V*
Caliber 4"
Length of gun  
Length of bore 45 cal
15'
Rate of Fire at 50° 14 rpm
Rifling 1 turn in 30 calibers
Elevation 20° - 80°
Traverse  
Muzzle Velocity 2,643'/sec
Range of shell  
Height of shell at 80° 28,750'
Shell weight 31 lb
Barrel Life  
Weight of Mounting 4 tons
  4" QF Mk XVI
Caliber 4"
Length of gun  
Length of bore 45 cal
15'
Rate of Fire 20 rpm
Rifling 1 turn in 30 calibers
Elevation 80°
Traverse  
Muzzle Velocity 2,650'/sec
Range of shell 21,300 yards
Height of shell  
Shell weight 35 lb 4 oz
Barrel Life 600
Weight of Mounting 16 tons
  3" QF Mk I and Mk I*
Caliber 3"
Length of gun 11' 8"
Length of bore 45 cal
11' 3"
Rate of Fire 20 rpm
Rifling 1 turn in 30 calibers
Elevation 90°
Traverse  
Muzzle Velocity 2,517'/sec
Muzzle Velocity - 16 lb shell 2,500 '/sec
Range of shell at 45° 11,200 yards
Height of shell  
Shell weight 12.5 lb, 16 lb
Barrel Life  
Weight of Mounting  

Light Anti-Aircraft

  6 pdr QF Hotchkiss MK I*
Caliber 2.24"
Length of gun 8' 1.73"
Length of bore 40 cal
7' 5.76"
Rate of Fire 20 rpm
Rifling 1 turn in 30 calibers
Elevation 60°
Traverse  
Muzzle Velocity 1,773'/sec
Range of shell at 45° 8,700 yards
Height of shell at 60° 10,000'
Shell weight 6 lb
Barrel Life  
Weight of Mounting  
  3 pdr QF Vickers Mk II
Caliber 1.85"
Length of gun 8' 2.9"
Length of bore 50.05 cal
7' 8.6"
Rate of Fire 25 rpm
Rifling 1 turn in 30 calibers
Elevation 80°
Traverse  
Muzzle Velocity 2,575'/sec
Range of shell at 12° 5,600 yards
Height of shell at 80° 15,000'
Shell weight 3 lb 5 oz
Barrel Life  
Weight of Mounting  
  2 pdr QF Vickers pompom Mk I, Mk II, Mk II*, Mk VIII
Caliber 1.575"
40 mm
Length of gun - Mk I, Mk II 8'
Length of gun - Mk VIII 8' 6.6"
Length of bore 39.4 cal
5' 2"
Rate of Fire 90 - 115 rpm
Rifling 1 turn in 30 calibers
Elevation 70° - 80°
Traverse  
Muzzle Velocity 1,920'/sec
Muzzle Velocity - high velocity 2,400'/sec
Range of shell 3,800 yards
Height of shell  
Shell weight 2.15 lb
Shell weight - high velocity 1.81 lb
Barrel Life  
Weight of Mounting  
  1.5 pdr QF Vickers pompom
Caliber 1.46"
Length of gun  
Length of bore 42.55 cal
5' 2"
Rate of Fire  
Rifling  
Elevation  
Traverse  
Muzzle Velocity 2,100'/sec
Range of shell  
Height of shell  
Shell weight 1.5 lb
Barrel Life  
Weight of Mounting  
  40 mm QF Bofors Mk NI, Mk NI/I, Mk IX, Mk X
Caliber 1.575"
40 mm
Length of gun 10' 10"
Length of bore 60 cal
8'
Rate of Fire 120 rpm
Rifling 16 grooves
Elevation 90°
Traverse  
Muzzle Velocity 2,720'/sec
Range of shell 12,500 yards
Height of shell 18,000'
Shell weight 2 lb
Barrel Life  
Weight of Mounting 7 tons
  0.5" Vickers Mk III machine gun
Caliber 0.5"
Length of gun 4' 4"
Length of bore 62 cal
2' 7.11"
Rate of Fire 600 - 700 rpm
Rifling  
Elevation 80°
Traverse  
Muzzle Velocity 2,520'/sec
Range of shell 800 yards
Height of shell  
Shell weight 2 oz
Barrel Life  
Weight of Mounting  
  20 mm Oerlikon
Caliber 0.787"
20 mm
Length of gun 7' 3"
Length of bore 70 cal
Rate of Fire  
Rifling  
Elevation 70° - 87°
Traverse  
Muzzle Velocity 2,725'/sec
Range of shell 6,250 yards
Height of shell 10,000'
Shell weight 0.27 lb
Barrel Life  
Weight of Mounting  

Sources:

  1. British Cruisers of World War Two, Alan Raven, John Roberts, 1980
  2. Cruisers of World War Two An International Encyclopedia, M. J. Whitley, 1995
20th Century American Military History Crucial Site