15 cm s.F.H. 13/1 L/17 (Sf.) auf Geschützwagen Lorraine Schlepper(f)

[Ghostmaxi 873]

I would like to suggest the 15 cm s.F.H. 13/1 L/17 (Sf.) auf Geschützwagen Lorraine Schlepper(f), similar to the Sd.Kfz.135 'Marder I'  the 15 cm s.F.H. 13 L/17 is based on the french Lorrain chassis, but instead of a Pak 40 it houses the massive, yet outdated 15 cm s.F.H. 13/1 L/17 (Schwere Feld Haubize 13/1 L/17). Instead of beeing a dedicated tank destroyer this vehicle was ment as an infantry support vehicle, the same role as the 15 cm s.I.G 33b on Pz I, II and III as well as IV, but instead of an "New" 15 cm s.I.G. 33, it used the old but more powerfull 15 cm s.F.H. 13/1 L/17. Of wich in summary 102 or 166 were build.

Why i would like to see it? Because it gives yet another, but just so slightly more powerfull derp gun to the germany tree, appart from the Sturmpanzer II, but with also new rounds to play with such as the Gr. 19 Be and it once again shows the need and tactics of the german army to use and modify captured equipment to fill their own gaps.

Specifics:

• Crew: 4
• Length: 4.79 m
• Width: 1,86 m
• Height: 2.20 m
• Weight: 9,4 metric tons when combat loaded
• Main armament: 15 cm s.F.H. 13/1 L/17
• Ammo: 8+1 rounds
• Main armament traverse: 7°/7°
• Main armament elevation: -5°/+40° (some say -0°, but there were 3 different generation of the vehicle, and at least 1 gen could do -4° to -5°)
• Engine: Delahaye 6 cylinder, water-cooled 3.56 liter gasoline, 70 hp at 2800 rpm
• Power/weight: 7,45 hp / t
• Transmission: 5 forward, 1 reverse
• Maximum speed: 35 km/h
• Maximum range: 120 km
• Grade: 22 degrees
• Trench crossing: 1.8 m
• Step: 57 cm
• Fording depth: 85 cm
• Ground clearance: 30 cm
• Ground pressure: 0.75 kg/cm2
• Steering ratio: 1.94

Spoiler

 

 

 

 

Armor of overall around 10mm

 

There are 3 gun types the s.I.G. 33, the s.F.H. 13 and 18, with L/12, L/17 and L/30 barrle, all share the same ammo (only upwise, there are rounds the s.I.G cant fire, while the 13 can and other rounds only the 18 fired).

 

While there are quite a couple of rounds, i will only mention the from a game perspective wise the most important 5.

 

First 2 are allready in game and quite well known. (Intended German Tank and A. TK. G un developen t states that with different driving bands they are fired in the different guns, full source see bellow.)

 

The I.Gr. 38 with 38 kg 8,6 kg Amatol 61mm pen, but now with 400m/s instead of 240m/s.

 

The I.Gr. 39 Hl/A 24,58 kg 5,32 kg (aquivalent) and 231/200/116mm at 0/30/60° and 280m/s (reduced charge) (in game penetration is wrong, its for the s.F.H. 18 with 465m/s = more spin = less pen of Heat rounds)

 

But also some new ones, which will also come for the s.F.H. 18 L/30 when it comes to the game someday on the Hummel. (some sources say "standart 42kg He with 381m/s", there is just the slight problem, that there is no 42kg He grenade.)

 

Gr. 19: He 43,5 kg at least 4,05 kg Np.30 (Pent)  (mind. = Mindestens = At least) 6,885 kg aquivalent (x1,7) (of course there is also the 5,1 kg TnT one, but this filler is better with 6,885 kg Aquivalent and Azin has incendary and toxic (and Low explosive) function IRL, which dont really have an effect In game.) The 4,05 kg Pent filler with the Azin is the gepreßt 4,3 kg one and the gegossen is the 5,1 kg TnT one. BOTH (or all 3 i guess) are Standard.

381 m/s

Spoiler

 

Gr. 19 Be. (Beton): Anti Concrete (AC, such is allready in game on the Kw 2) 43,5 kg 3,22 kg Ph-Salz und H.10 (4,6046 kg TnT aquivalent x1,43) (or 3,375 x 1,43= 4,83kg Aquivalent G-Salz und H.10, which is actually the same but in another form iirc) 381 m/s and 64-71 mm pen

(i dont know if it gets the Apcbc advantage, cince it is capped, or the Apbc)

Usually stated just TNT but this shows also 2 more were used. Note the different weight as Page 22 mixture doesnt have the wood/bakelite block in the tip. But the 2nd pic has the non explosive tip which would then have the Geschossringbuch Teil 2 stated explosive weight of 3,22 kg. And The Page 24 filling is with the frontal block like other drawings of the round and prefarable for the penetration calculation (as there is slighly less explosive).

Spoiler

 

And the I.Gr. 38 Nb Smoke, 40 kg 400m/s

 

Source:

German Self-Propelled Artillery Guns of the Second World War Craug Moore

German Artillery in Combat Bob Carruthers

Geschossringband Teil 2

Intended German Tank and A. TK. Gun developent Summary No. 186 02.09.1945 Appendix C to War Office Technical Intelligence

Panzer Tracts No.10 Artillerie Selbstfahrlafetten by Thanks L. Jentz

German self-propelled guns by Gordon Rottman

Ringbuch für Sprengladungen Band II

Edited December 14, 2022 by Ghostmaxi

[TerikG2014 1,389]

Open for discuss 

[Milocat 4,857]

+1, would be another awesome howitzer vehicle to add to the hangar.  

[warner7 81]

+1, Let's go baby hummel. Still waiting for proper hummel.