100 mm/70 SM-5-1 (100 mm)
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
The SM-5-1 has access to ammunition already seen before in similar weapon systems. These are: OF-55 HE, ZS-55 HE-TF, F-55 HE-F and ZS-55R AA-VT. The wide variety of ammunition gives a vast variety of usages for this weapon system. As expected, the OF-55 HE offers the most powerful explosive filler for the system that can cause significant damage to lightly armoured vehicles due to the rate of fire. However, it barely has penetration to deal with armour (24 mm of armour penetration). This is where the F-55 HE-F comes in handy. As an HE round with base fuze, it does not explode immediately on contact, similar to SAPBC. This round has 73 mm of penetration and can deal easier with armoured targets. However, the explosive filler is reduces by couple grams. While this does not significantly affect the overall performance of the round, this should be kept in mind. Finally, the ZS-55 has more than 2 kg of TNT equivalent, while the ZS-55R has 1.2 kg of TNT equivalent. At first sight, the time fuzed version looks better in performance due to the increased filler and barely increased speed, but it is much harder to aim and accurately hit an enemy aircraft as the round has to land very close to the aircraft to cause significant damage while the HE-VT can just be fired with higher chances of dealing damage without the hassle of manually changing and setting the time fuze. Both rounds are a major threat when it comes ot dealing with enemy aircraft, it is up to the player to decide which one to pick and use.
|Ammunition|| Type of
|Penetration @ 0° Angle of Attack (mm)|
|100 m||1,000 m||2,000 m||3,000 m||4,000 m||5,000 m|
|100 mm F-55 HE-F||HE||24||24||24||24||24||24|
|100 mm ZS-55 AA||HE-TF||26||26||26||26||26||26|
|100 mm OF-55 HE||HE||73||64||57||52||47||44|
|100 mm ZS-55R AA-VT||HE-VT||17||17||17||17||17||17|
|Ammunition|| Type of
| Fuse delay
| Fuse sensitivity
| Explosive Mass
(TNT equivalent) (g)
|100 mm F-55 HE-F||HE||1,000||15.6||4||5||1,770||79°||80°||81°|
|100 mm ZS-55 AA||HE-TF||1,000||15.6||0||0.1||2,070||79°||80°||81°|
|100 mm OF-55 HE||HE||1,000||15.6||0||0.1||1,940||79°||80°||81°|
|100 mm ZS-55R AA-VT||HE-VT||995||15.9||0||0.1||1,260||79°||80°||81°|
Comparison with analogues
Compared to 100 mm/55 MLE model 53
While very similar, there are differences primarily in targeting speed and ROF. The SM-5-1 is able to hold continuous firing for longer with a vast variety of ammunitions while the MLE model 53 can only utilize two type of rounds. The overall performance of the rounds are better in terms of explosive filler and the fact the MLE model 53 lacks any sort of armour piercing ammunition gives the upper hand to the SM-5-1. The huge speed difference makes the SM-5-1 easier to aim and use at longer ranges (995+ m/s vs 855 m/s). However, it should be noted that the MLE Model 53 has significantly better targeting speeds and a slightly better vertical aiming angle (85° vs 90°).
Compared to 4.5 inch/45 QF Mark V
The 4.5 inch Mark V is the closest system to the SM-5-1 performance wise. While it has a faster ROF (20 RPM vs 15 RPM) it has slightly reduced targeting speed (17°/s vs 18°/s). Ammunition wise, while both have nearly the exact same ammunition, the SM-5-1 ammunition have much better explosive filler, penetration (with exception of the SAPBC round) and speed (995+ m/s vs 746 m/s) despite being a smaller calibre.
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.
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
Excellent additions to the article would be video guides, screenshots from the game, and photos.
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;
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Paste links to sources and external resources, such as:
- topic on the official game forum;
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|USSR naval cannons|
|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|
|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|
|40 mm||2pdr QF Mk.IIc (Britain)|
|47 mm||3 pdr QF Hotchkiss (Britain)|