The Nautiloid in 1941
The Nautiloid is a miniature submarine which is launched from the Nautilus.
It takes the form of a small bathysphere, its design is influenced by Nautiloid cephalopods, having a round 'shell' body with protruding arms on the front.
In 1941 Janni and Broad Arrow Jack use the Nautiloid to sail up the river Elbe and into Berlin's reservoir.