Part of another design concept, I’m honestly not sure what inspired this particular design, but this was another exploration of different hull designs. The entire front is meant to be a single solid curve kind of like the front of an especially blunt fish. Casemate guns on the sides cover the forward 180 degree arc, with smaller “torpedo” style launch tubes right up at the front of the curve. The engine system is behind two trailing parts of the superstructure that would hold logistics and other “soft” systems.
Alternatively, this design might get repurposed and made into more of a “bullet” kind of design, where the whole engine system is instead surrounded by superstructure and given a lot more structural protection. Or it might not get used at all! The nature of exploratory design concepts.