Main description

The Sturmmaus (meaning Storm Mouse) was planned design variant of the Maus, it had a casematte design that had a 20 Kanone 21 cannon. however due to the lack of blueprints and documents almost being nonexistant, either likely being destroyed or made up, having a similar case to the Jagdpanzer E-100, it is likely that the Sturmmaus was indeed a blueprint design but never ended up beyond that stage, it would likely be in a Stug configuration opposed to the casemate design at the back of the tank, to likely compensate for engine space and other important components of the Maus.

380mm variant

The 380mm variant of the Sturmmaus used the same launcher system as the Sturmtiger, but has a more efficent loading system and slightly better trajectory range. This particular variant has a crane to put shells inside with a loading hatch on each side. Despite appearing promising for itw purpose, unfortunaty this design would be impractical due to the sheer weight of how many shells that was planned for it (and would likely be lower to save space) and that the Maus chassis already had reliability problems in the beginning.

Credits

WCAC for chassis and 380mm rocket launcher system

KAIST for casemate

Have fun!