History of the Swedish “EMIL” tank project

With the release of 9.17 not all that far off I just wanted to do a post covering the history of the Swedish tank project “EMILE” and also to cover some of historically inaccurate things with what we have in-game. I was planning to do this as a video but the length of time that I have already put about 45-50hrs into researching and confirming my findings, translating from Swedish to English and then compiling everything here has taken a lot from me so I’m just going to make a post about it here and attach all the related documents and visual aids I had planned to have in the video. And I call this the history of but it’s more of a brief overview… brief may be subjective.  So without further delay, let’s get into it.

The Origins 
The EMIL project didn’t start until 1951 but the designs before it started in 1945, but these weren’t directly related to the project. This being the Strv Leo which was canceled in 1947. Work by Landsverk continued and in 1948 a design for the Strv Lancen (which was essentially a smaller, less armored Strv Leo with a 75mm gun) was offered. Another, even lighter version was also offered called the Strv Pilen. During this time a tank was proposed but never designed to have 150mm of frontal armor, 25mm at the side and 20mm at the rear while being armed with a 105mm L/50 Lvkan m/42 gun and was estimated to weigh 34tons. This remained an idea in 1950.

That brings us here, to the beginning of the EMIL project where the first design was produced in 1951, this is the tank we see at tier 8 in-game, however it wasn’t called the Emil 1 and this is WarGamings first point of being incorrect. This original Emil design essentially took a redesigned AMX turret from the French who had earlier tested the AMX13 in Sweden and the hull design of the German Panther tanks. This initial design was considered closer to that of a medium tank.

However the Swedish army grew the need for a tank that could counter the Soviet IS-3 tanks. This was achieved in 1952 by adopting the Soviet pike-nose design to improve the effective armor of the tank. The Armor thickness. armament or turret did not differ from that of the initial proposal however this new design with a pike-nose was named the Emil 1 or E1 and became the foundation for the next 2 variants in the project.

The Emil 1 would end up using an American engine to power it over a Swedish engine like the proposal would have had. One thing that the Emil 1 and future designs fail to achieve though is the gun depression of the initial design, with the Emil 1 to Emil 3 having 12 degrees of gun depression, the initial proposal had 14 degrees over the front and 15 degrees over the sides.

The Emil 2 and 3 were to be able to mount either a 12cm rifled barrel gun or a 15cm smoothbore gun and were larger in size then that of the Emil and Emil 1. They were also designed with more powerful engines. Due to the weight of the Emil 3 and the uncertainty of acquiring the engines for it the E3 was deemed impractical with the E2 being favored. However the desired engine for the Emil 3 became available and was ultimately the design adopted to be used.

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Armor Configurations:
There were also multiple proposed armor thickness combinations to choose from. This would also affect the vehicle weight and subsequently the power-to-weight. There were two frontal protection combinations which are listed as Alt 1 (JS III kprj) and Alt 2 (JS II ukprj).

Alt 1 called for a lower hull plate of 120 mm at 38 deg, an upper hull plate of 75mm at 25 degrees, and a turret front of 140mm  at 40 degrees to the sides and 44 degrees down the center.
Alt 2 called for a lower hull plate of 145 mm at 38 deg, an upper hull plate of 95mm at 25 degrees, and a turret front of 170mm at 40 degrees to the sides and 44 degrees down the center.

There were also 3 configurations of side armor listed from A to C and are as such:
A: 40mm on the turret and 20mm on the side
B: 60mm on the turret and 30mm on the side
C: 80mm on the turret and 40mm on the side

Rear armor was 30mm for config A and B and 40mm for config C. So what we have in game is the initial Emil proposal, the Emil 1, which is not in-game, would be E I 1a, the Emil 2 which would be classed as the E II2 and the Emil 3 would be E III 2c.

Gun Options:
There were 4 guns planned; a 10.5cm L/50 which was ever only planned on the initial proposal. A 12cm L/40 that could be fit onto all 3 Emil designs. A 15cm L/40 that could be mounted onto the Emil 2 and 3 and finally a L/67 10.5cm that would be used if the 12cm and 15cm L/40 guns didn’t work out. To go with the guns the Emil tanks were all designed to have a dual drum system where one clip would be loaded with standard armor piercing rounds while the other would be loaded with another ammo type. This would allow the switching of shell types to be incredibly fast as it didn’t require reloading a new clip, allowing to go from firing APDS rounds to HEAT in seconds and gave the Emil 2 and 3 max rate of fire of 30 rounds per min on both the 12cm and 15cm guns.
Engine Options:
Multiple American engines were also proposed and are as such: AOS-895 (500hp) in the Emil 1, AV-1195 (540hp) and  AVS-1195 (665hp) in the Emil 2 and AV-1790 (810hp) in the Emil 3. It was ultimately decided that the Emil 3 would get a Swedish made engine recently produced capable of outputting 900hp. The hull for the Emil 3 was created and tested in 1955 with the engine, it was discovered that while the engine produced 900hp, only 723 was being used to move the vehicle and the cooling system was sapping the remaining 177hp to operate.

kknwsqs

Post EMIL plans:
After the prototype Emil 3 hull was constructed and tested the turret armor was reduced at the side and rear from 80mm and 40mm to 70mm and 30mm to improve gun stability, this final alteration was when the project was named Kranvagn or KRV to confuse spies.

During the development the Swedish ended up buying British Centurion tanks as a stopgap while the Emil project was in development which ended up fading out. Memos by the Vehicle Bureau indicate that the project would be cancelled due to problems with the ammunition they were attempting to create for it to fire .

Work on two completed chassis continued into the future under 1 planned project and 2 that went ahead. The planned project was to mate a Centurion Mk10 turret onto the Emil 3 hull. It was intended to be used as a base design for future Swedish tanks but nothing happened with this plan. One of the projects then went ahead was the removal of half of the road wheels down to 4 for the testing of a new suspension. This was the test rig for the hydraulic suspension that would later be put onto the Strv 103.

The final project with the Emil 3 chassis involved a prototype 15cm autoloading artillery known as the KV-155, other names included; 15cm kv fm/49, Akv 1949 and VK 152 S 49. Work on the KV-155 had started in 1949 and was planning to use the Strc M/42 chassis as a bas. When the Emil project came to a halt the artillery project was redesigned into the Artillerikanonvagn 151 and would use the Emil chassis and engine. The project would ultimately be developed into the Bandkanon 1 which entered service in 1967.

So what does this all mean for World of Tanks?
Thanks to the Swedish for documenting the Emil project so well we can see a lot of things wrong here;

1951 proposal “EMIL”:
Well for starters, the Emil 1 at tier 8 is actually the Emil proposal design. It should have 140mm of turret armor, not 180mm; 120mm of lower plate armor, not 125mm; 70mm of upper plate armor, not 100mm. Gun Depression should be –14, not –12. Gun should be a 12cm L40 (but for balance reasons we will leave the 10.5cm L/50) and engine should be a 550hp engine giving it a power to weight of 19.5 hp/t. Documents have its top speed as 55km/h but a “marching” speed of 50km/h so this is actually accurate with what’s in-game. This configuration would work well as a tier 8 premium HT. This would also feel like a MT due to the high mobility and small size

1952 Emil 1
The historical Emil 1 fits is the E I 1a build, this is documented as weighing 30.7 tons, would have the same armor configuration as the 1951 proposal as I just mentioned but in a pike-nose hull. The engine would be the AOS-895 (500hp) engine compared to the 390hp engine it gets in-game giving it a power to weight of 16.28 hp/t compared to the 13.19 that the proposal currently has. Gun depression would go from –14 to –12. This pike-nose design would become the regular tier 8.

Emil 2:
The Emil 2 in-game should be the E II 2b configuration, so it should have 170mm of turret armor, not 215mm; 95mm of upper hull, not 80mm; 145mm lower hull, not 115mm; side hull should be 30mm, not 60mm. The weight of the vehicle is actually correct for this proposal. In-game the top engine is close to the AV-1195 (540hp) engine giving it a realistic power to weight of 14.09hp/t. The only thing to say other then the armor would be to suggest them give the Emil 2 the AVS-1195 (665hp) engine which would give it a power to weight of 17.97 hp/t. Given that the historical armor isn’t nearly as thick as what’s currently in-game and could be penetrated by premium ammo it would make sense to balance it by improve its mobility.

Emil 3:
Finally there’s the Emil 3, or the Kranvagn. Once again it’s had the armor changed unhistorically as well. It should be the same as the Emil 2 but with 40mm hull side and rear and 30mm turret rear. The armor configuration would have it weigh 41.8t compared to the 44.8 in-game and specific engine power should be 723hp up from 700hp giving it a power to weight of 17.29hp/t compared to the current 15.63 hp/t. They could also give it a 15cm gun but have it as a single shot over an auto-loader since we know just how bad 15cm auto-loaders were thanks the the WT auf E100. And on that note they could also do the same with the T58 (T57 with a 155mm auto-loader and larger turret to accommodate the larger drum). As a single shot the turret wouldn’t need to be changed to fit the 155mm gun since you would be removing the whole drum system from the turret. This is completely in theory.

Artillery: 
There’s also the artillery which I touch on briefly that could fill from tier 8-10 in an artillery branch, but that can wait until after global rebalance and arty isn’t that thing for everyone to abuse anymore.
Centurion Mk10 Turret, Emil 3 Hull:
Coming Soon!

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