130 mm/58 SM-2-1 (130 mm)

From War Thunder Wiki
Jump to: navigation, search

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

The SM-2-1 130 mm weapon system is the Russian "equivalent" to the 5 inch/38 Mk.12 weapon system in terms of reliability, calibre, and use. This weapon system is completely new to the WW2 Soviet 130 mm cannons as it features an autoloader, enhanced targeting, and radar capabilities. As already seen in Russian 130 mm cannons, they are multi-purpose weapon systems with devastating AA capabilities. However, compared to the Mk.12, it has a significantly reduced ROF (15 RPM vs 22 RPM) but it counters that with much faster targeting speeds and better cannon elevation angles.

Available ammunition

The SM-2-1 has access to three types of ammunition: OF-42 HE, PB-42 SAP and ZS-42R HE-VT. The OF-42 offers a very potent destructive effect against lightly armoured targets and a superior HE filler than the ZS-42R HE-VT. However, as most HE shells, it barely has the penetration to counter armour (just 37 mm of penetration at all ranges and angles). The PB-42 SAP offers a midpoint between APCBC and HE shells as it has a decent explosive filler with sufficient armour penetration (203 mm flat at 1,000 m). This round should be the main round utilized when fighting all type of ships due to the armour penetration. Lastly, the ZS-42R HE-VT round offers a superb explosive filler for AA purposes but is almost half of the explosive filler of the OF-42 HE. Since it has a proximity fuze, engaging aircraft is much easier.

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
130 mm OF-42 HE HE 37 37 37 37 37 37
130 mm PB-42 SAP SAPCBC 203 176 146 127 113 95
130 mm ZS-42R HE-VT HE-VT 35 35 35 35 35 35
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%
130 mm OF-42 HE HE 950 33.4 0 0.1 3,830 79° 80° 81°
130 mm PB-42 SAP SAPCBC 950 33.4 4 5 2,210 48° 63° 71°
130 mm ZS-42R HE-VT HE-VT 955 33.08 0 0.1 3,000 79° 80° 81°

Comparison with analogues

The SM-2-1 has a better handling in general than B-13's, to be expected from a much modern weapon system.

Compared to 5 inch/38 Mk.12 (127 mm)

As previously discussed, both systems, while very similar, have many differences, primarily the targeting speed and ROF. The SM-2-1 is able to hold a firing for longer with much better performing ammunition. While the 5 inch AAVT Mk.31 has a slightly better explosive filler than the ZS-42R (3.22 kg vs 3 kg) it has a huge speed reduction (792 m/s vs 955 m/s) making it much harder to aim and hit aircraft. The benefit of the SM-2-1 over the Mk.12 while doing AA duties is the elevation angle (-10°/+35° vs -15°/+82°).

Compared to 4.5 inch/45 QF Mark V (114 mm)

The 4.5 inch Mark V is the closest system to the SM-2-1. While it has a faster ROF (20 RPM vs 15 RPM) it has slightly reduced targeting speed (17°/s vs 18°/s). In terms of ammunition they are pretty much the same when it comes to type of ammunition, but the SM-2-1 has overall better performing ammunition due to the increased calibre.

Compared to 4.7 inch/45 Mk.XII (120 mm)

As expected from a Cold War weapon system fighting to a WW2 one, the SM-2-1 has a superb performance over it in all aspects. Different from the other systems, the SM-2-1 now has a better ROF (15 RPM vs 12 RPM).

Usage in battles

Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against notable opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.

Pros and cons

Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.

Pros:

Cons:

History

Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: https://wiki.warthunder.com/(Weapon-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />.

Media

Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

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

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • encyclopedia page on the weapon;
  • other literature.


USSR naval cannons
20 mm  ShVAK
25 mm  2M-3
30 mm  AK-230 · 30 mm/54 AK-630 · BP "Plamya"
37 mm  37 mm/67 70-K · V-11
45 mm  45 mm/46 21-K · 45 mm/68 21-KM · 45 mm/89 SM-20-ZIF
57 mm  AK-725
75 mm  75 mm/50 Canet patt.1892
76 mm  34-K · 39-K · 76 mm/60 AK-176M · AK-726 · D-56TS · F-34 · Lender AA gun, pattern 1914/15
85 mm  85 mm/52 92-K · 85 mm/54.6 ZIS-C-53 · 90-K
100 mm  100 mm/56 B-34 · 100 mm/70 SM-5-1 · Minizini
102 mm  Pattern 1911
120 mm  120 mm/50 pattern 1905
130 mm  130 mm/50 pattern 1913 · 130 mm/58 SM-2-1 · B-13
152 mm  152 mm/57 B-38
180 mm  180 mm/57 B-1-P · 180 mm/60 B-1-K
305 mm  12-inch/52 pattern 1907
  Foreign:
40 mm  2pdr QF Mk.IIc (Britain)
47 mm  3 pdr QF Hotchkiss (Britain)