305 mm/45 Mark X (305 mm)

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Description

Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.

Vehicles equipped with this weapon

General info

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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
Mark IIa HE HE 72 72 72 72 72 72
Mark VIa APC APC 493 437 359 298 250 190
Mark VIIa SAPCBC SAPCBC 265 234 192 159 133 101
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%
Mark IIa HE HE 831 386 0 0.1 53.13 79° 80° 81°
Mark VIa APC APC 831 389.8 0.025 17 13.64 48° 63° 71°
Mark VIIa SAPCBC SAPCBC 831 386 0.035 17 36.3 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

The 12-inch 45-calibre Mark X guns were the tenth series of guns made in the 12-inch calibre by the Royal Navy and were used in a design that changed the face of battleship construction. The calibre was first adopted by the British in the 1880s when the decision was made to adopt breech-loading naval guns and became standard in the 1890s when the British began switching to cordite ammunition. As naval gunnery improved during the turn of the century, particularly thanks to the efforts of the American William Sims and Britain's own Percy Scott, combat was being extended to the unprecedented range of 6,000 yards. Another important innovation was in constructing naval guns as technology allowed for longer and longer barrels, Vickers kept making guns that were as long as they could get away with. Compared to the earlier Mark IX guns, the Mark X had a 540-inch long bore from 480 inches and a muzzle velocity of 2,700 feet per second, 1,000 more than the Mark IX's. The Mark X guns were first built for the Lord Nelson-class of pre-dreadnought battleships, but the design was delayed and instead the first ship launched carrying this weapon was HMS Dreadnought. While the premise of a battleship with all-big-gun armament was floated around by Italian naval architect Vittorio Cuniberti in a 1903 article in Jane's Fighting Ships, HMS Dreadnought was the first ship completed to such specifications, despite the Royal Navy only beginning taking the concept seriously after noticing the 12-inch guns were the most effective during the naval battles of the Russo-Japanese War. The other nations were not far behind in what became a naval arms race that would affect navies all over the world as they drove to make their dreadnoughts. The United States had already approved of a similar design that became the South Carolina-class and Japan had already the Satsuma as an all-big-gun design, though it wasn't completed as one. Alongside HMS Dreadnought, these guns were also used by the Invincible class, a new breed of battlecruisers designed to combine high speed with the firepower of a dreadnought. They were also used on the follow-up design to these ships, the Bellerophon-class dreadnoughts and the Indefatigable-class battlecruisers. However, with the beginnings of a naval arms race, the Mark X did not satisfy the Royal Navy's needs for long and was soon replaced by the 12 inch/50 Mark XI. However, it would see use during World War I both on British warships and defend the Allied-controlled Belgian coast near Nieuwpoort in 1917.

Media

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See also

External links


Britain naval cannons
20 mm  20 mm/70 Oerlikon Mk.II · 20 mm/70 Oerlikon Mark V · 20 mm/70 Oerlikon Mark 24
40 mm  2pdr QF Mk.IIc · 2pdr QF Mk.VIII · 2pdr Rolls Royce · QF Mark V · QF Mark VII · QF STAAG Mark II
47 mm  3 pdr QF Hotchkiss
57 mm  6pdr 7cwt QF Mk IIA · 6pdr QF Mk.V
76 mm  3 inch 12pdr 12 cwt QF Mk.V · 3 inch/70 Mark 6 · 76 mm/45 QF 3in 20cwt HA Mark I · 76 mm/50 12pdr 18cwt QF Mark I · OQF 3in 20cwt
102 mm  4 inch/40 QF mark III · 4 in QF Mark V · 4 inch/45 Mark XVI · 4 inch/50 BL Mark VII · BL Mark IX
114 mm  4.5 inch/45 QF Mark IV · 4.5 inch/45 QF Mark V · 8cwt QF Mk I
120 mm  4.7 inch/45 Mk.XII
133 mm  5.25 inch/50 QF Mark I
152 mm  6 inch/45 BL Mark VII · 6 inch/45 BL Mark XII · 6 inch/50 BL Mark XXIII · 6 inch/50 QF Mark N5
190 mm  7.5 inch/45 BL Mk.VI
203 mm  8 inch/50 Mark VIII
305 mm  305 mm/45 Mark X · 12 inch/50 Mark XI
343 mm  13.5 inch/45 Mark 5(H)
381 mm  15 inch/42 BL Mark I
  Foreign:
20 mm  Rh202 (Germany)
40 mm  Bofors L/60 Mark 2 (USA) · Bofors L/60 Mark 3 (USA)
76 mm  76 mm/62 OTO-Melara Compact (Italy)