12-inch/45 Vickers (305 mm)

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Description

The 12-inch/45 Vickers is a 305 mm naval gun that was developed by the British firms Armstrong and Vickers in the early 1900s.

Vehicles equipped with this weapon

General info

Tell us about the tactical and technical characteristics of the cannon or machine gun.

Available ammunition

Penetration statistics
Ammunition Type of
warhead
Penetration @ 0° Angle of Attack (mm)
1,000 m 2,500 m 5,000 m 7,500 m 10,000 m 15,000 m
12-inch HE HE 69 69 69 69 69 69
12-inch APC APC 496 432 345 278 229 172
Shell details
Ammunition Type of
warhead
Velocity
(m/s)
Projectile
mass (kg)
Fuse delay
(s)
Fuse sensitivity
(mm)
Explosive mass
(TNT equivalent) (kg)
Ricochet
0% 50% 100%
12-inch HE HE 825 400.06 0 0.1 37.82 79° 80° 81°
12-inch APC APC 825 400.06 0.035 17 13.64 48° 63° 71°

Comparison with analogues

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Usage in battles

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Pros and cons

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Pros:

Cons:

History

Around the turn of the 20th century, the naval powers of the world would begin a naval arms race and Japan did not want to fall behind. At the time, Japan lacked the capability to build large capital ships, so they frequently turned to Britain to build their battleships while working to obtain the know-how to build capital ships for themselves. The 12-inch/45-calibre Vickers was first built for the Katori-class battleships. These wire-wound guns were based on the 12-inch/45 Mark X first used on HMS Dreadnought. In fact, Katori mounted these very guns as it was built by Vickers while her sister ship Kashima was armed with similarly designed guns made by the Elswick Ordnance Company. The guns would eventually be produced under license in Japan and were designated the 12-inch/45 Type 41 guns in 1908 (1908 being the 41st year of the reign of Emperor Meiji).

The launch of HMS Invincible in 1908 rendered Japan's entire capital ship fleet obsolete, but Japan wasn't far behind. The Ibuki class which was already planned was retrofitted with 12-inch guns and closely followed by the Tsukuba-class battlecruisers Tsukuba and Ikoma which were planned from the start to use 12-inch guns after being on the receiving end of these powerful weapons during the Battle of the Yellow Sea in the Russo-Japanese War. The Mikasa, a pre-dreadnought battleship, was refitted in 1908 with these 12-inch/45 Vickers.

While HMS Dreadnought was the first all-big-gun battleship to be finished in 1906, the Japanese were first to approve construction of such a design in 1904 with what became the Satsuma class. While planned to be armed with a large battery of 12-inch guns, the Satsuma class, the first class of battleships built in Japan, were forced to build with a large secondary battery instead because of budget cutbacks and a lack of 12-inch guns after the Russo-Japanese War. The last Japanese pre-dreadnoughts of the Kawachi class were finished in 1912. Kawachi and Settsu had four of these guns mounted amidships complimenting the fore and aft 12-inch/50 Vickers due the same budget cutbacks. After the Washington Naval Treaty was signed in 1922, the limitations of capital ship tonnage led the IJN to scrap most of their ships using these guns and mounting their turrets as coastal defense guns in Tokyo Bay.

Media

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See also

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  • reference to the article about the variant of the cannon/machine gun;
  • references to approximate analogues by other nations and research trees.

External links


Japan naval cannons
20 mm  JM61 · Type 98
25 mm  25 mm/60 Type 96
37 mm  Type 4 · Type 11 pattern 1922
40 mm  40 mm/62 Vickers
57 mm  Type 97
75 mm  Type 88 AA
76 mm  3-inch/40 Type 41 · 8 cm/40 3rd Year Type · 8 cm/60 Type 98
100 mm  100/65 mm Type 98 mod A
120 mm  120 mm/45 3rd Year Type · 120 mm/45 10th year type
127 mm  5 inch/40 Type 89 · 127 mm/50 3rd Year Type
140 mm  140 mm/50 3rd Year Type
152 mm  6-inch/45 Type 41 · 15 cm/50 Type 41
155 mm  155 mm/60 3rd Year Type
200 mm  20 cm 3rd year type No.1
203 mm  20 cm/45 Type 41 · 20 cm/50 3rd year type No.2
356 mm  36 cm/45 Type 41
410 mm  410 mm/45 Type 3
  Foreign:
20 mm  20 mm/70 Oerlikon Mk.II (USA/Britain)
40 mm  Bofors L/60 Mark 1 (USA) · Bofors L/60 Mark 2 (USA) · Bofors L/60 Mark 3 (USA)
47 mm  3 pdr QF Hotchkiss (Britain)
76 mm  3-inch Mark 10 (USA) · 3 inch Mk.33 (USA) · 3-inch Mk.34 (USA)
120 mm  4,7-inch/40 Armstrong (Britain)
127 mm  5 inch/38 Mk.12 (USA)
305 mm  12-inch/45 Vickers (Britain) · 12-inch/50 Vickers (Britain)