Yugoslavian tech tree for World of Tanks proposal by PikPikker

Renault FT Kegresse FT Kegresse

This is actually the same tank which we have in the Chinese branch already.

  • 16/16/16 mm
  • 16/16/16 mm
  • 6.6 t
  • 17 kph
  • 5.3 hp/t
  • 35 hp
  • Commander, Driver
    •
      7.5 mm Hotchkiss 37 mm gun Hotchkiss SA18
      Renault FT
    1. 16/16/16 mm
      2.
      Renault 35 hp
    1. 35 hp
      2.
      FT Kegresse
    Praga P-IIa Praga P-IIa
    Renault FT Kegresse FT Kegresse

    FT Kegresse was a French modernization of the classic FT-17 with a new suspension (Kegresse system) and rubber tracks. Such tanks were built in 1925 and then some of them were used in Morocco in 1926. But during the usage the new suspension showed its unreliability at high speeds. After that 9 tanks were sold to Yugoslavia, 5 - to Poland and one to Sweden. Their further fate is unknown.

     SO-75 H-35 Mod. SO-75 H-35

  • 34/34/34 mm
  • ~12 t
  • Limited
  • 22 kph
  • 10 hp/t
  • 100 hp
  • Commander, Driver, Gunner(?)
    •
      7.5 cm leIG 18
      Hotchkiss 6-cyl
    1. 78 hp
      2.        Renault 6-cyl
    2. 120 hp
      3.
      Hotchkiss H-35
    Samohodno orudije 75 mm H-35 Hotchkiss Mod. SO-75 H-35

    Hotchkiss H-35 with turret removed and 7.5cm leIG18 mounted on it.

     Mark IV 76 mm Mk.IV 76mm

  • 80/30/20 mm
  • 50/30/30 mm
  • ~25 t
  • 38 kph
  • 12 hp/t
  • 300 hp
  • Commander, Driver, Gunner, Loader, Radioman
    •
      76 mm M1A1
      Pz. IV
    1. 50/30/30 mm
      2.
      Maybach HL 120TRM
    1. 300 hp
      2.
      Pz. IV
    Mark IV 76 mm M1A1 Mod. Mk.IV 76 mm

    This is a proposal to re-arm the Panzer IV tank with the US M1A1 76mm gun – drawings were made, but the project was scrapped due to the tank being obsolete (seems to be a late project).

     SO-150 M-3A3 Mod. SO-150 M-3A3

  • 25/25/25 mm
  • ~17 t
  • 50 kph
  • 14.7 hp/t
  • 250 hp
  • Commander, Gunner, Driver, Loader
    •
      150 mm sIG 33
      Continental W-670-9A
    1. 250 hp
      2.
      M-3A3 Stuart
    Samohodno orudije 150 mm M-3A3 Stuart Mod. SO-150 M-3A3

    During 1944, versions A1 and A3 were delivered to Yugoslavia. The difference between these two versions is a different turret and an armored body, new periscopes for the driver and commanders, a different position of the driver hatch and a different shape of the front armored body. Tanks M3 (A1 and A3), although already outdated, proved well in the battles that were led by the First Tank Brigade, especially in the liberation operations of Mostar, Knin, and Trieste.

    Some of the damaged tanks, which could not be repaired, were equipped with other weapons, so unique vehicles were obtained. A German anti-tank gun (PAK 40 75mm) and an anti-aircraft gun (FLAC M38 20mm, 82mm mortar) were mounted. It is possible that a lightweight German howitzer SiG 33 was mounted on one vehicle, but this vehicle was destroyed in the first fight. In total, 7 vehicles were modified, which served until the end of the war.

     M4A3E4 M4A3E4

  • 64/38/38 mm
  • 89/51/51 mm
  • 71 rounds
  • 33.6 t
  • 42 kph
  • 14.9 hp/t
  • 500 hp
  • Commander, Gunner, Driver
    •
      76 mm M1 gun
      M4A3E4
    1. 89/51/51 mm
      2.
      Ford GAA
    1. 500 hp
      2.
      M4A3E4 (VVSS)
    M4A3E4 Sherman M4A3E4

    M4A3E4 was actually a M4A3 Sherman upgraded with M1 gun (and some other small improvements). It was a later-war version which was exported even after the WW2. Yugoslavia was one of these export countries, and M4A3E4 served there until 1970s.

     T-34B T-34B

  • 45/45/45 mm
  • 90/75/52 mm
  • 60 rounds
  • 32 t
  • 55 kph
  • 15.6 hp/t
  • 500 hp
  • Commander, Gunner, Driver, Loader, Radioman
    •
      85 mm S-53
      T-34B
    1. 90/75/52 mm
      2.
      RUT-1
      V-2M-11
    1. 500 hp
      2.
      T-34B
    T-34B/T-34-85 T-34B

    When high-tech T-55 with its 100 mm gun appeared, it was obvious that T-34-85s became obsolete. Yugoslavia had to make an upgrade of the ground forces, but its abilities on that were limited. That's why a decision to order modernized T-34-85s were made. But this couldn’t happen as well: Soviet Union set too high price for these tanks.

    Yugoslavia made some project notes about the T-34-85 modernization, some of which were lately realized: parts unification with T-55, using only sub-caliber and HEAT shells, new radios RUT-1, V-2M-11 engines (with heaters), new roadwheels, night-vision devices (M-63 or M-68), AA machine guns M2 ect. Tanks were finally modernized in 1970-80s. In fact, in 1972 there were 1018 tanks in the Yugoslavian army, and 44% of them were T-34s and T-34B's.

     M-15/42 U.O.139 M15/42 U.O.139

  • 42/25/25 mm
  • 25/15/15 mm
  • 15 t
  • 40 kph
  • 12.8 hp/t
  • 192 hp
  • Commander, Driver, Loader, Radioman
    •
      37 mm Skoda A7
      PzKw 38(t)
    1. 25/15/15 mm
      2.
      R.F. 2 C.A.
      SPA 15TB
    1. 192 hp
      2.
      M-15/42
    M-15/42 (U. O. 139) / M-15/42/Pz.38(t) M15/42 UO139

    Independent State of Croatia, Italian built M-15 tank chassis fitted with a German Panzer 38(t) turret carrying the markings U.O. 139 and Croatian red and white shield, driving in the snow in Croatia. The letter U behind the shield stands for ‘Ustashe’ the Croatian Fascist movement. Built by Wehrmacht in some of their Kraftparks possibly in 1943-44. Unfortunately, there is no info about any usage of this only vehicle.

     SO-90 M-36B2 Mod. SO-90 M-36 Mod.

    M36 Jackson with high-power engine seems interesting.. and I expect better shells than on 6 tier.

  • 114/25/19 mm
  • 76/32/127 mm
  • 47 rounds
  • 29 t
  • ~50-60 kph
  • 20 hp/t
  • 580 hp
  • Commander, Gunner, Driver, Loader, Radioman
    •
    SO-76 M-18 Mod. SO-76 M-18 Mod.
      90 mm M3
    1. 240/240/320 HP
    2. 170/258/45 mm
      3.        100 mm D-10T
    3. 250/250/330 HP
    4. 190/247/50 mm
      5.
      M36B2
    1. 76/32/127 mm
      2.
      V-55
    1. 580 hp
      2.
      M36B2
    SO-122 M-4 Mod. SO-122 M-4 Mod.
    Samohodno orudije 90 mm M-36B2 Mod. SO-90 M-36

    In the late 20th century Serbian army upgraded their Jacksons in service with engines from T-55. They supposed to be in the war in Bosnia.

     Skoda S-I-D/T-32 Skoda T-32

  • 22/12/12 mm
  • 42 rounds
  • 30 deg
  • -10..+25 deg
  • 4.8 t
  • 41 kph
  • 12.5 hp/t
  • 60 hp
  • Commander, Driver
    •
      37 mm Skoda A3J
    1. 40/40/45 HP
    2. 52/74/18 mm
      3.
      Skoda Flat 4 cylinder
    1. 60 hp
      2.
      Skoda S-I-D
    Skoda S-I-D SOkoda T-32

    In the early 1930s, Yugoslavia had two cavalry divisions. Each cavalry division consisted of two to three cavalry brigades with two regiments, one artillery squadron, a cycling battalion and other supporting units. It was planned to attach a motorized regiment to each division. However, it was necessary to obtain some light tanks or tankettes for these new cavalry units.

    During 1933/34, several Czech and Polish tankette models were tested. The Polish TK3 tankette was the first tested in February 1933. The results of these tests are not known, but the Yugoslav Army did not order them.

    Czech tankettes were next to be tested. The first was the vz.33 in July and then the Škoda MU-4 in October. Both vehicles performed poorly, mostly due to frequent problems with their engines.

    After these failures, Škoda began development of a new tankette, better armored and armed with a 37mm cannon. The prototype was completed in mid-1935 under the designation Š-I-d.

    In 1936, this new tankette was presented to the Yugoslav delegation, which had a series of concerns. One of the main concerns was the thickness of the front armor. Yugoslav delegation insisted that the armor should be 30mm and not 20mm as it was on Š-I-d prototype. Although the later production model Š-I-D would have a thicker armor (22mm), it was still not thick enough. But as this model went into production, it seems that there was a kind of compromise between the two sides on that matter.

    Once these concerns were addressed, the Ministry of the Army and Navy of the Kingdom of Yugoslavia and Škoda finally signed a contract on the 30th of June 1936, for eight improved Š-I-D tankettes. After some delays, they were delivered in August 1937. The Yugoslav Army had plans for a larger number of field tests in 1938, and if they were successful, they would buy a large number of this tankette.

    They were used to train crews mostly (but also for combat and recon), but after Yugoslavia was attacked by the Germans and their fascist allies, 4 of these vehicles fought south of Belgrade, where they were destroyed by German artillery – despite their short career, they were regarded as successful. The remaining 4 vehicles (unarmed, used for training) stayed in the military school in Zemun, until they were captured by the Germans there. They were sent to (now German-occupied) Škoda factory for refit and afterwards, they went to the Waffen SS units and were used for training under the designation of Pz. Kpfw. 732 (j).

     SO-105 M-18 Mod. SO-105 M-18

  • 13/13/13 mm
  • 25/13/- mm
  • 120 deg
  • ~17 t
  • 90 kph
  • 23.5 hp/t
  • 400 hp
  • Commander, Gunner, Driver, Loader, Radioman
    •
      105 mm M3 Howitzer 105 mm M2 Howitzer
      SO-105 M-18 Mod.
    1. 25/13/- mm
    2. 120 deg
      3.
      Continental R975-C1
    1. 350 hp
      2.        Continental R975-C4
    2. 400 hp
      3.
      M18 Hellcat
    Samohodno orudije 105 mm M-18 "Hellcat" Mod. SO-105 M-18

    After World War II, many M18s were sold to other countries. These were rebuilt and refurbished by Brown & Root in northern Italy in the late 1940s and early 1950s, and bear data plates that indicate those rebuilds. One of the users was Yugoslavia, which kept them in reserve until the early 1990s. A number of these vehicles were later used by the Military of Serbian Krajina and Army of Republika Srpska during the Yugoslav wars. One example was used on an armored train named the "Krajina express" (Krajina Ekspres).

    This SPG is a project of mounting 105 mm howitzers (M2 and M3) into Hellcat. Most of the turret was cut (I expect partial sides and open roof and rear) and traverse was limited.

     SO-122(H) M-4 Mod. SO-122(H) M-4 Mod.

  • 51/38/38 mm
  • Limited
  • ~31 t
  • 39 kph
  • 12.9 hp/t
  • 400 hp
  • Commander, Gunner, Driver, Loader, Radioman
    •
    SO-75 M-3A3 Mod. SO-75 M-3A3 Mod.
      122 mm M-30/M-38 Howitzer
      Continental R975-C1
    1. 350 hp
      2.        Continental R975-C4
    2. 400 hp
      3.
      M4 Sherman
    SO-155(H) T-34 SO-155(H) T-34
    Samohodno orudije 122(H) M-4 Sherman Mod. SO-122(H)

    Sherman tanks were widespread after the WW2 in Yugoslavia and that's why there were some different modifications and projects based on them. For example, this SO-122(H) with Soviet howitzer mounted instead of turret (I suppose that early Sherman was to be used).

     SO-155(H) T-34 Mod. SO-155 T-34

  • 45/45/45 mm
  • Limited
  • ~31 t
  • 54 kph
  • 16.1 hp/t
  • 500 hp
  • Commander, Loader, Driver, Gunner, Radioman (?)
    •
    SO-122(H) M-4 SO-122(H) M-4
      155 mm M1 Howitzer
      V-2-34
    1. 500 hp
      2.
      T-34
    SO-155(T) M-4 SO-155(T) M-4
    Samohodno orudije 155(H) T-34 Mod. SO-155(H)

    Projected 155 mm M1 howitzer on T-34 chassis.

     SO-155(T) M-4 Mod. SO-155(T) M-4

    Actually this SPG is very similar to the US M12 or M40 self-propelled gun.

  • ~25 mm
  • Limited
  • ~30 t
  • 35-40 kph
  • 13.3 hp/t
  • 400 hp
  • Commander, Gunner, Driver, Radioman, Loader, Loader(?)
    •
    SO-155(H) T-34 SO-155(H) T-34
      155 mm M1A1
      Continental R975-C1
    1. 350 hp
      2.        Continental R975-C4
    2. 400 hp
      3.
      M4 Sherman (inverted)
    SO-152(T) T-54 SO-152(T) T-54
    Samohodno orudije 155(T) M-4 Sherman Mod. SO-155(T) M-4

    A project of modified Sherman chassis with 155 mm M1A1 gun facing backward.

     SO-152/155(T) T-54 Mod. SO-152/155(T)

  • ~80 mm
  • Limited
  • ~35 t
  • 50 kph
  • 14.8 hp/t
  • 520 hp
  • Commander, Gunner, Driver, Loader, Loader(?)
    •
    SO-155(T) M-4 SO-155(T)
      152 mm ML-20 155 mm M1A1
      V-54
    1. 520 hp
      2.
      T-54
    SO-203(H) T-54 SO-203(H) T-54
    Samohodno orudije 152/155(T) T-54 Mod. SO-152/155(T)

    152/155 mm howitzer mounted on the T-54 chassis (project).

     SO-122 M-4 Mod. SO-122 M-4 Mod.

  • 51/38/38 mm
  • 89/51/51 mm
  • 360 deg
  • -2..+10 deg
  • 33.5 t
  • 50 kph
  • 15.5 hp/t
  • 520 hp
  • Commander, Gunner, Driver, Loader, Radioman
    •
    SO-90 M-36 Mod. SO-90 M-36
      100 mm D-10T
    1. 250/250/330 HP
    2. 190/247/50 mm
      3.        122 mm A-19
    3. 390/390/530 HP
    4. 225/265/68 mm
      5.
      M4A3/SO-122
    1. 89/51/51 mm
      2.
      SCR-528 No. 19
      Ford GAA
    1. 450 hp
      2.        V-2R
    2. 520 hp
      3.
      M4A3 Sherman
    SO-130(T) M-4 SO-130(T) M-4 Mod.
    Samohodno orudije 122 mm M-4A3 Sherman Mod. SO-122

    In 1961 tank M-634 (based on M4A3 Sherman) got its further development. New gun is 122 mm A-19 but modified with vertical sliding breachblock (HEAT shells were supposed to be used, but there was a lack of them in Yugoslavia). Max speed changed from 42km/h to 50km/h (new engine). Fuel consummation lowered from 400 to 211 l per 100km. Maneuverability on difficult terrain was somewhat reduced. Gunsight was modified TSh-15 from SU-100. In tests during 1962. gun showed lower penetration then 100mm D-10S and vehicle was reclassified from anti-tank vehicle to infantry support one, but it was not suitable for that role due the inability to use indirect fire (elevation was only +10/-2deg). In 1966. development was officially stopped and prototype scrapped.

    There is also some project version called "M4/100mm" which I couldn’t find any info about, so I'm not even sure it's real, but the 100 mm gun fits perfectly as a stock anyway.

     SO-203(H) T-54 Mod. SO-203(H) T-54

    Notice that this is a pic of the same Chinese project

  • ~80 mm
  • Limited
  • ~40 t
  • 50 kph
  • 13 hp/t
  • 520 hp
  • Commander, Gunner, Driver, Loader, Loader
    •
    SO-152/155(T) T-54 SO-152/155(T) T-54
      203 mm B-4 203 mm M1 Howitzer
      V-54
    1. 520 hp
      2.
      T-54
    SO-203(H) T-55 SO-203(H) T-55 Mod.
    Samohodno orudije 203(H) T-54 Mod. SO-203(H) T-54

    203 mm howitzer on T-54 chassis. Actually it's not known what howitzer it is, but I expect Soviet B-4 or US M1.

     SO-203(H) T-55 Mod. SO-203(H) T-55

    Notice that this is a pic of the same Chinese project

  • ~100 mm
  • Limited
  • ~40 t
  • 50 kph
  • 14.5 hp/t
  • 580 hp
  • Commander, Gunner, Driver, Loader, Loader
    •
    SO-203(H) T-54 SO-203(H) T-54
      203 mm Howitzer
      V-55
    1. 580 hp
      2.
      T-55
    Samohodno orudije 203(H) T-55 Mod. SO-203(H) T-55

    203 mm howitzer on T-55 chassis. Like the previous SPG, but a bit modified. Somewhere around 60's-70's project.

     Praga P-IIa Praga P-IIa

  • 16/12/10 mm
  • 16/12/12 mm
  • 72 rounds
  • 8.5 t
  • 36 kph
  • 13.4 hp/t
  • 114 hp
  • Commander, Gunner, Driver
    •
    FT Kegresse FT Kegresse
      37 mm Skoda A3 37 mm Skoda A3 Mod.
      P-IIa
    1. 16/12/12 mm
      2.        P-IIa-j
    2. 16/12/12 mm
      3.
      Praga SV
    1. 93 hp
      2.        Praga 114hp
    2. 114 hp
      3.
      P-IIa
    Skoda T-12 Skoda T-12
    Praga P-IIa/P-IIa-j P-IIa

    To sum up, this was a tank developing in Czechoslovakia in 1934-36, being a competitor to LT vz. 35. P-IIa was supposed to be sold to Yugoslavia, but then declined by both sides because of too weak armor (it had to be 25 mm in front by the program). Special Yugoslavian variant called P-IIa-j and had a modified gun.

     Skoda T-12 Skoda T-12

  • 25/16/16 mm
  • 25/16/16 mm
  • 10.95 t
  • 33 kph
  • 12.3 hp/t
  • 135 hp
  • Commander, Gunner, Driver, Radioman
    •
    Praga P-IIa Praga P-IIa
      37 mm Skoda A3 47 mm Skoda A9
      LT vz. 35
    1. 25/16/16 mm
      2.        Skoda T-12
    2. 25/16/16 mm
      3.
      Skoda T-11
    1. 120 hp
      2.        Skoda T-11/2
    2. 135 hp
      3.
      Skoda T-12
    SO-57 S-35 SO-57 S-35 SO-75 M-3A3 Mod. SO-75 M-3A3 Mod.
    Skoda T-12/S-IIa-j

    This tank is a proposed improved version of the LT vz.35. The prototype was made in 1940, but by then Czechoslovakia was already occupied, exporting to Yugoslavia was no longer an option and from the Axis bloc, noone was really interested – and so the prototype was “cannibalized” for other tanks.

     SO-57 S-35 Mod. SO-57

  • 36/35/25 mm
  • 56/46/46 mm
  • ~20 t
  • 37 kph
  • 9.5 hp/t
  • 190 hp
  • Commander, Gunner, Driver, Loader(?)
    •
    Skoda T-12 Skoda T-12
      47 mm SA 35 57 mm 6-pdr Mk. V
      Somua S-35
    1. 56/46/46 mm
      2.        SO-57 S-35 Mod.
    2. ?
      3.
      190CV V8
    1. 190 hp
      2.
      Somua S-35
    M-634 M-634
    Samohodno orudije 57 mm Somua S-35 Mod. SO-57 S-35

    Somua S35 with a 6pdr, this was a unique conversion of the Somua S35 tank, made in Shibenik by Yugoslavian partisans. The Germans were using the S35 as second line armor (as they did with a lot of captured tanks), partisans captured it and modified it with a 6pdr Mk.V from a destroyed AEC armored car. Most likely one of a kind, although some sources suggest that two of these actually existed. Obviously, the turret had to be heavily modified in order to carry such a large weapon. Other sources also suggest that the real reason for this conversion could be the lack of ammunition and damage to the original gun.

     M-634 M-634

  • 51/38/38 mm
  • 89/51/51 mm
  • -10..+25 deg
  • 31.8 t
  • 50 kph
  • 15.7 hp/t
  • 500 hp
  • Commander, Gunner, Driver, Loader, Radioman
    •
    SO-57 S-35 SO-57 S-35
      75 mm M3 76 mm M1
      M4A3(75)
    1. 89/51/51 mm
      2.        M4A3(76)
    2. 89/64/64 mm
      3.
      Ford GAA
    1. 450 hp
      2.        V-2
    2. 500 hp
      3.
      M-634
    Vozilo A Vozilo A
    M-634

    The M-634 was an Yugoslavian medium tank: M4A3 Sherman with T-34's V-2 engine. The speed of the vehicle increased. This would latter become the base tank for the SO-122 M-4. 5 tanks were built in 1956.

    Vozilo A Vozilo A

  • 50/45/45 mm
  • 100/86/60 mm
  • 33 t
  • 50 kph
  • 15.2 hp/t
  • 500 hp
  • Commander, Gunner, Driver, Loader, Radioman
    •
    M-634 M-634
      85 mm ZiS S-53 75 mm KwK 42 L/70 85 mm M51
    1. a bottlenecked version of the German 88mm L/56, modified to fire Soviet 85mm shells. It could penetrate 140mm at 100m with AP, 190mm with APCR
      2.
      Vozilo A
    1. 100/86/60 mm
      2.
      V-2
    1. 500 hp
      2.
      Vozilo A
    M-328/628 M-328/628
    Teski Tenk “Vozilo A” A-1

    Vozilo A was an attempt of post-war Yugoslavia to improve the T-34, using indigenous resources. 9 were produced between 1949 and 1951. They were designed and built at the height of the danger from Soviet invasion when Yugoslavia was building up its weapons industry. They were designed by reverse engineering of the Soviet T-34-85 medium tank without any documentation.

    M-328/628 "Galeb" Galeb

  • 50/45/45 mm
  • 100/?/? mm
  • 47 rounds
  • ~34 t
  • ~50 kph
  • 14.7 hp/t
  • 500 hp
  • Commander, Gunner, Driver, Loader, Radioman
    •
    Vozilo A Vozilo A
      90 mm tank gun 100 mm gun
      T-34/90
    1. 100/?/? mm
      2.
      SET-19
      V-2
    1. 500 hp
      2.
      M-328/628
    M-320 M-320
    M-328/628 "Galeb" / T-34/90

    "Galeb" (seagull) is a further development of the Vozilo A from 1958-1959. The new 90 mm gun was installed into the prototype. It had better penetration than S-53, but fire rate fell and mobility of the tank decreased, so this tank was ranked as unsuccessful. There was an idea to arm it with a 100 mm gun, but it didn't go further. A modification of T-34/90 from 1964 also didn't show needed results, and works on improving the T-34 stopped.

     M-320 M-320

  • 75/40/20 mm
  • 105/52/50 mm
  • 34 t
  • 50 kph
  • 15.3 hp/t
  • 520 hp
  • Commander, Gunner, Driver, Loader, Radioman
    •
    M-328/628 Galeb
      90 mm M3 90 mm M1/M36
      M-320
    1. 105/52/50 mm
      2.
      V-2R
    1. 520 hp
      2.
      M-320
    M-636 M-636
    M-320

    During 1955 Mechanical Institute has begun the preliminary design work on the M-320 medium tank. Performing examination of characteristics on all available tanks (T-34, M-4, M-47, M-18…), many subsystems were examined in detail, a detailed numerical analysis of major subsystems and running gear were carried out and an optimal solution was proposed for our requirements and capabilities. A working prototype was even built. But already the next year 1956, project was abandoned and efforts were redirected at perfecting T-34, since production of some units for it had already been realized.

     M-636 "Kondor" M-636

  • 75/40/30 mm
  • 105/52/50 mm
  • 35 t
  • 50 kph
  • 600 hp
  • 17.1 hp/t
  • Commander, Driver, Gunner, Loader, Radioman
    •
    M-320 M-320
      90 mm M1/M36 100 mm D-10T2G 100 mm D-10T2S
      M-636A
    1. 105/52/50 mm
      2.        M-636B
    2. 105/52/50 mm
      3.
      V-2R
    1. 520 hp
      2.        V-2D
    2. 600 hp
      3.
      M-636
    M-636D T-34D
    M-636 "Kondor"

    The ultimate attempt to emulate the T-54. Developed from 1953 to 1963 in parallel to the previous designs, but importing T-54 was chosen instead. Several stages were developed with the common characteristics. A prototype was built, planned to produce 30 such tanks per year.

     M-636D T-34D

  • 75/40/30 mm
  • 105/52/50 mm
  • ~35 t
  • ~50 kph
  • 680 hp
  • 19.4 hp/t
  • Commander, Driver, Gunner, Loader, Radioman
    •
    M-636 M-636
      105 mm CN F-1
      M-636D
    1. 105/52/50 mm
      2.
      HS-110
    1. 680 hp
      2.
      M-636D
    M-636D T-34D

    The ultimate stage of M-636 from 1963. Had the same fate with all M-636 variants (importing T-54).

     T-55AI "Igman" T-55AI

  • 100+/80/45 mm
  • 200+/160/65 mm
  • ~37 t
  • ~50-60 kph
  • 21.1 hp/t
  • 780 hp
  • Commander, Gunner, Driver, Loader
    •
      100 mm D-10T2S 105 mm CN F-1 105 mm L7A1
      T-55AI
    1. 200+/160/65 mm
      2.
      R-113
      V-46
    1. 780 hp
      2.
      T-55AI
    T-55AI "Igman"

    Yugoslav upgrade of the T-55A (1981), intended for modernization of YPA's aging fleet of T-55s. It was using sophisticated components from M-84, local produced advanced versions of T-72, with whom it was in parallel development. Major improvements included an engine from T-72, a simplified SUV with meteosensor and laser rangefinders from M-84, addition of spaced armor on turret and front body, and installation of smoke dispensers. About 20 were made before break-up of Yugoslavia. Prototypes were impressed into regular service, however there is no data of them being used in combat. A variant of this modification, intended for export, was armed with L7A1 105 mm gun. There is also some info about arming it with the CN F-1 gun.

    Just a note: if it gets too overpowered, it's possible to leave it only the 100 mm D-10T2S gun which has a low penetration.

     Skoda S-I-j Skoda S-I-j

  • 30/15/15 mm
  • 42 rounds
  • 30 deg
  • -10..+25 deg
  • 5.8 t
  • 31 kph
  • 10.3 hp/t
  • 60 hp
  • Commander, Driver
    •
      47 mm Skoda A9J
    1. 60/60/75 HP
    2. 62/115/24 mm
      3.
      Skoda 4-cyl
    1. 60 hp
      2.
      Skoda S-I-j
    Skoda S-I-j T-3D

    Skoda S-I-j was built in Czechoslovakia in 1938 for export into Yugoslavia. The built prototype successfully passed the tests, and then Yugoslavia ordered 108 SPGs. But after an occupation of Czechoslovakia the order was canceled. In fact, Third Reich specialists were satisfied with results of testing the only prototype.

     SO-75 M-3A3 Mod. SO-75 M-3A3 Mod.

  • 25/25/25 mm
  • ~16 t
  • 50 kph
  • 15.6 hp/t
  • 250 hp
  • Commander, Gunner, Driver, Loader
    •
    Skoda T-12 Skoda T-12
      75 mm PaK 40
    1. 110/110/175 HP
    2. 108/154/38 mm
      3.
      Continental W-670-9A
    1. 250 hp
      2.
      M-3A3
    SO-76/85 Majbach SO-76/85 Majbach SO-122(H) M-4 Mod. SO-122(H) M-4 Mod.
    Samohodno orudije 75 mm PaK 40 M-3A3 Stuart Mod. SO-75 M-3A3

    During 1944, versions A1 and A3 were delivered to Yugoslavia. The difference between these two versions is a different turret and an armored body, new periscopes for the driver and commanders, a different position of the driver hatch and a different shape of the front armored body. Tanks M3 (A1 and A3), although already outdated, proved well in the battles that were led by the First Tank Brigade, especially in the liberation operations of Mostar, Knin, and Trieste.

    Some of the damaged tanks, which could not be repaired, were equipped with other weapons, so unique vehicles were obtained. A German anti-tank gun (PAK 40 75mm) and an anti-aircraft gun (FLAC M38 20mm, 82mm mortar) were mounted. It is possible that a lightweight German howitzer SiG 33 was mounted on one vehicle, but this vehicle was destroyed in the first fight. In total, 7 vehicles were modified, which served until the end of the war.

     SO-75 Mk. III Mod. SO-75 Mk.III

  • 50/30/30 mm
  • ~21 t
  • 40 kph
  • 14.3 hp/t
  • 300 hp
  • Commander, Gunner, Loader, Driver, Radioman
    •
      75 mm PaK 40
    1. 110/110/175 HP
    2. 108/154/38 mm
      3.
      Maybach HL 120TR
    1. 300 hp
      2.        Maybach HL 120TRM
    2. 300 hp
      3.
      Mk. III
    Samohodno orudije 75 mm PaK 40 Mk. III Mod. SO-75 Mk. III

    There is almost no info about this SPG, but it's still known that there was a Panzer III which was used to mount a PaK 40 gun on its hull (one vehicle built).

     SO-76/85 "Majbach" Majbach

    Notice that this is a pic of the same Czechoslovak project.

  • 80/30/30 mm
  • ~24 t
  • 38 kph
  • 21.3 hp/t
  • 300 hp
  • Commander, Gunner, Driver, Loader
    •
    SO-75 M-3A3 Mod. SO-75 M-3A3 Mod.
      75 mm StuK 40 L/48
    1. 110/110/175 HP
    2. 110/158/38 mm
      3.        76 mm M1A1
    3. 115/115/185 HP
    4. 128/177/38 mm
      5.        85 mm ZiS S-53
    5. 160/160/280 HP
    6. 126/167/43 mm
      7.
      Maybach HL 120TRM
    1. 300 hp
      2.
      SO-76/85
    SO-76 M-18 Mod. SO-76 M-18 Mod.
    Samohodno orudije 76/85 mm "Majbach" SO-75/85

    A project of re-arming the StuG III with 76 mm M1A1 gun or 85 mm ZiS S-53. Never gone further than papers.

     SO-76 M-18 Mod. SO-76 M-18 Mod.

  • 12/12/12 mm
  • 25/12/12 mm
  • ~20 t
  • 72 kph
  • 25 hp/t
  • 500 hp
  • Commander, Gunner, Loader, Driver, Radioman
    •
    SO-76/85 Majbach Majbach
      76 mm M1
    1. 115/115/185 HP
    2. 128/177/38 mm
      3.        90 mm M3
    3. 240/240/320 HP
    4. 170/258/45 mm
      5.
      M-18 Hellcat
    1. 25/12/12 mm
      2.        SO-76 M-18 Mod.
    2. ?
      3.
      Continental R975 С2/C4
    1. 400 hp
      2.        Mercedes-Benz V-10 Diesel
    2. 500 hp
      3.
      SO-76 M-18 Mod.
    SO-90 M-36 Mod. SO-90 M-36 Mod.
    SO-76 M-18 Mod.

    The modernized M18 Hellcat Gun Motor Carriage in Venezuelan service. These vehicles were refurbished and modernized by an unknown Yugoslavian company.

    Among the upgrades is a New Mercedes Benz 10 cylinder diesel engine, a fully closed turret, rubber sideskirts, a thermal gun sleeve, smoke grenade launchers, new IR night sight and fire control system, Luna 2 infrared searchlight. An unknown number of these tanks were modernized from the original 75 M18 Hellcats, previously in Venezuelan service.

     Vozilo B Vozilo B

  • 50/45/45 mm
  • 100/86/60 mm
  • 33 t
  • 50 kph
  • 15.2 hp/t
  • 500 hp
  • Commander, Gunner, Loader, Driver, Radioman
    •
    SO-76/85 Majbach Majbach Vozilo A Vozilo A
      90 mm M3
    1. 240/240/320 HP
    2. 160/243/45 mm
      3.
      Vozilo B
    1. 100/86/60 mm
      2.
      V-2
    1. 500 hp
      2.
      Vozilo B
    SO-76 M-18 SO-76 M-18 Mod. M-328/628 M-328/628
    Vozilo B

    Vozilo B is a project stage of Vozilo A. The only difference is B version has 90 mm M3 gun. It was more classified as a TD by Yugoslavs.

     SO-76 M-18 Mod. Hellcat

  • 100/80/45 mm
  • 25/13/13 mm
  • ~29 t
  • ~56 kph
  • 20 hp/t
  • 580 hp
  • Commander, Gunner, Loader, Driver
    •
      76 mm M1
    1. 115/115/185 HP
    2. 128/177/38 mm
      3.
      M-18 Hellcat
    1. 25/13/13 mm
      2.
      RUT-1
      V-55
    1. 580 hp
      2.
      T-55A
    Samohodno orudije 76 mm M1 M-18 "Hellcat" Mod. SO-76 M-18

    The only vehicle (A turret from M18 Hellcat with M1 gun on T-55A hull) built by Bosnia during the Civil War in 1992-1995. It was used until 1997 in training cases. Supposed to be built as combining an undamaged M18 turret and T-55A hull.

     SO-130(T) M-4 Mod. SO-130(T) M-4 Mod.

  • 25-51 mm
  • Limited
  • ~35 t
  • 40-50 kph
  • 14.9 hp/t
  • 520 hp
  • Commander, Gunner, Driver, Radioman, Loader, Loader(?)
    •
    SO-122 M-4 SO-122
      130 mm M-46
    1. 550/550/750 HP
    2. 270/320/75 mm
      3.
      Ford GAA
    1. 450 hp
      2.        V-2R
    2. 520 hp
      3.
      M-4 Sherman (inverted)
    SO-203(T) T-55 SO-203(T) T-55 Mod.
    Samohodno orudije 130 mm (T) M-46 M-4 Sherman Mod. SO-130(T) M-4

    A project of mounting M-46 Soviet gun on the Sherman chassis facing backward. I suppose V-2R engine (as on other modified Shermans, so it's fair) to move such a heavy mounting.

     SO-203(T) T-55 Mod. SO-203(T) T-55 Mod.

    Here we go: the most powerful TD to become in the game!

  • 100/80/45 mm
  • Limited
  • ~45 t
  • 50 kph
  • 12.9 hp/t
  • 580 hp
  • Commander, Gunner, Driver, Radioman, Loader, Loader
    •
    SO-130(T) M-4 SO-130
      203 mm L/40 Gun
    1. 1400/2250/2250 HP
    2. 300/235/100 mm
      3.
      V-55
    1. 580 hp
      2.
      SO-203(T)
    Samohodno orudije 203 mm (T) T-55 Mod. SO-203(T) T-55

    Early '70 project of mounting the 203 mm gun on T-55 chassis (I hope it has at least a little traverse).
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