Superheavy self-propelled artillery projects

[Bottleship]

The same type of artillery as the German 540- and 600-mm self-propelled howitzers and the Soviet 406- and 420-mm post-war SPGs.
German 280 mm SPG project, WW2 period

Other German 280 mm SPG project:


Also, German 240 mm (?) SPG (unbuilt "Karl" variant?):

280 mm French (?) project, late WW1:
US 1921 SPGs concepts, 8" and 14" guns:

Soviet 210/305 mm project, ~1944:

These are either coastal or siege guns. I have found almost no information about these projects.

 

[klem]

Super machine exhibitions but it would be better with dates to place them in time.

 

[publiusr]

I wonder what the shuttle crawler could carry..

 

[Ravinoff]

Interesting how close some of these are to the eventual M65 "Atomic Annie" 280mm gun in terms of carriage design. All derived from rail Schnabel cars. Think there are separate threads going already for most of the projects I know of, the Geschützwagen Tiger and Soviet mega-guns (going from the still-in-use 240mm 2S4 Tyulapan through the 405mm 2A3 Kondensator-P and 420mm 2B1 Oka to V.K Grabin and Leonid Kurchevsky's work on absolutely monstrous recoilless gun systems) have definitely been covered here.

 

[1635yankee]

I wonder what the shuttle crawler could carry..

At about 3 mph on a specially prepared track.

 

[publiusr]

Bull would have been happy-breach on a massive ball joint and barrel slew handled by the crawler?

 

[klem]

Interesting how close some of these are to the eventual M65 "Atomic Annie" 280mm gun in terms of carriage design. All derived from rail Schnabel cars. Think there are separate threads going already for most of the projects I know of, the Geschützwagen Tiger and Soviet mega-guns (going from the still-in-use 240mm 2S4 Tyulapan through the 405mm 2A3 Kondensator-P and 420mm 2B1 Oka to V.K Grabin and Leonid Kurchevsky's work on absolutely monstrous recoilless gun systems) have definitely been covered here.

It is very appropriate to mention Grabin and the S-103 project, Too ambitious with many factors to take into account starting with the 420 mm heavy nuclear projectile, its adventure ended in several failures and many accidents too complicated, it was abandoned because the development of missile technology proved to be the optimal option.

 

[Wurger]

More detailed side views of the 28-cm-Kanone auf Raupenlafette "R2". The back cabin is clearer. From BA/MA`s RH 8/1750.

 

[moin1900]

From BA/MA`s RH 8/1750.

The document also shows the 24 cm K4 and 28 cm K5 cannons mounted on tank chassis.

Gerät R2 Marineselbstfahrlafette Küstenverteidigungsgeschütz
- R2 Krupp 28 cm coastal defense gun - running gear - March 1944 - Drawing
Source: Bundesarchiv
Signatur: RH 8/3971K


Tank-based railway guns
https://tanks-encyclopedia.com/ww2/nazi_germany/german-tank-based-railway-guns/- Krupp - 24cm K4 on Tiger I chassis
- Rheinmetall - 24cm K4 on Karl chassis
- Krupp - 28cm K5 on Tiger II chassis