3 inch Mk.33 (76 mm)

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3 inch Mk.33 on Chikugo

Description

The 3-inch Mark 33 is an American naval anti-aircraft gun, but ironically for being part of a long-serving American naval cannon it is mostly found in the Japanese tech tree where it was introduced on post-war Japanese designs.

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)
100 m 1,000 m 2,000 m 3,000 m 4,000 m 5,000 m
HC Mk.27 HE 8 8 8 8 8 8
APHE APHE 121 98 77 61 49 39
HE-VT HE-VT 7 7 7 7 7 7
Shell details
Ammunition Type of
warhead
Velocity
(m/s)
Projectile
Mass (kg)
Fuse delay
(m)
Fuse sensitivity
(mm)
Explosive Mass
(TNT equivalent) (g)
Ricochet
0% 50% 100%
HC Mk.27 HE 823 5.9 0 0.1 500 79° 80° 81°
APHE APHE 823 5.9 3 10 63.7 47° 60° 65°
Proximity-fused shell details
Ammunition Type of
warhead
Velocity
(m/s)
Projectile
Mass (kg)
Fuse delay
(m)
Fuse sensitivity
(mm)
Arming distance
(m)
Trigger radius
(m)
Explosive Mass
(TNT equivalent) (g)
Ricochet
0% 50% 100%
HE-VT HE-VT 823 5.85 0 0.1 548 15 352.8 79° 80° 81°

Comparison with analogues

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Usage in battles

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Pros and cons

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Pros:

Cons:

History

In late 1944, the 20 mm Oerlikon and Bofors L/60 were found to be insufficient to defend ships against Japanese Kamikaze attacks and it was eventually settled on developing a 3-inch gun based on a design that was in service since the 1890s. The reason for the 3-inch gun calibre was that they wanted to use radio proximity or VT fuses and the 3-inch was the smallest calibre capable of using these shells. The first gun to enter production in the anti-aircraft role of this capacity was the Mark 24, but later the twin mounts Mark 27 to the Mark 33 which featured a new slide. While the Mark 33 had a higher rate of fire compared to the earlier predecessors and used the same mount as the Bofors, it suffered from a short barrel life. The Mark 33 and the other variants of the gun entered service after the war and had long service history in the United States Navy from the late 1940s until the '80s. The gun also saw action in multiple other navies including Spain, where it is in service to this day, Norway, Japan, and Italy.

During the post-war period, the majority of the Japanese and Italian naval strength was disbanded or destroyed, but the rebuilding of the nations along with the geopolitics of the Cold War made the United States more amiable to the idea of these nations getting reformed navies with former US Navy destroyers serving as the first ships in these new services. For the Italians, they got former Fletcher-class destroyers such as the Geniere. The Japanese meanwhile got the Mark 33 for locally made destroyers such as the JDS Ayanami (DD-103) which was the first ship to mount these guns and later destroyer escorts such as the Ikazuchi-class.

Media

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See also

External links

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  • topic on the official game forum;
  • other literature.


USA naval cannons
20 mm  20 mm/70 Oerlikon Mk.II · 20 mm/70 Oerlikon Mark V · 20 mm/70 Oerlikon Mark 24
25 mm  25 mm/87 Mk.38
28 mm  1.1 inch/75 Mk.1
37 mm  AN-M4
40 mm  Bofors L/60 Mark 1 · Bofors L/60 Mark 2 · Bofors L/60 Mark 3
76 mm  3 inch/23 Mk.4 · 3-inch/50 Mk.10 · 3-inch/70 Mk.37 · 3-inch Mark 10 · 3 inch Mk.33 · 3-inch Mk.34
102 mm  4 inch/50 Mk.9
127 mm  5 inch/25 Mk.11 · 5 inch/25 Mk.13 AA · 5 inch/38 Mk.12 · 5-inch/50 Mk.5 · 5 inch/51 Mk.7 · 127 mm/54 Mark 18
152 mm  6 inch/47 Mk.16 · 6 inch/53 Mk.12
203 mm  8 inch/55 Mark 9 · 8 inch/55 Mark 12 · 8 inch/55 Mark 14
305 mm  12-inch/45 Mk.5 · 12 inch/50 Mk.7 · 12 inch/50 Mk.8
356 mm  14 inch/45 Mk.8

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/50 3rd year type No.2
356 mm  36 cm/45 Type 41
  Foreign:
40 mm  Bofors L/60 Mark 1 (USA) · Bofors L/60 Mark 2 (USA) · Bofors L/60 Mark 3 (USA)
76 mm  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)

Italy naval cannons
20 mm  20 mm/65 Breda · 20 mm/70 Oerlikon 3S · 20 mm/70 Scotti-Isotta Fraschini mod.1939
37 mm  37 mm/54 Breda Mod.32 · 37 mm/54 Breda Mod.38 · 37 mm/54 Breda Mod.39
40 mm  40 mm/39 Vickers-Terni mod.1915/1917 · 40 mm/39 Vickers-Terni mod.1915/1917, Modif.1930 · 40 mm/70 Breda-Bofors type 107
65 mm  65 mm/64 Ansaldo-Terni Mod.1939
76 mm  76 mm/40 Armstrong mod.1897/1910 · 76 mm/40 Armstrong mod.1897/1912 · 76 mm/40 Ansaldo mod.1917 · 76 mm/45 Schneider mod.1911 · 76/50 Mk.33 · 76 mm/62 OTO-Melara Compact · 76-mm/62 SMP 3
100 mm  100 mm/47 O.T.O. Mod. 1928 · 100 mm/47 O.T.O. Mod. 1937
120 mm  120 mm/45 Canet-Schneider-Armstrong mod.1918-19 · 120 mm/50 Armstrong model 1909 · 120 mm/45 O.T.O. Mod. 1926 · 120 mm/50 Ansaldo mod.1926 · 120 mm/50 O.T.O. Mod.1936
127 mm  127/38 Mk.12
135 mm  135 mm/45 O.T.O. Mod. 1938
152 mm  152 mm/45 Schneider mod.1911 · 152/53 mm Ansaldo mod.1926 · 152/53 mm O.T.O. Mod.1929
203 mm  203 mm/50 Ansaldo mod.1924 · 203 mm/53 Ansaldo mod.1927
305 mm  305 mm/46 Armstrong model 1909 · 305 mm/46 Vickers model 1909
  Foreign:
20 mm  2 cm/65 Flakvierling 38 (Germany)
40 mm  Bofors L/60 Mark 3 (USA)