Tirpitz's alternative Helgoland layout promised a ten-gun broadside

Where can one learn more about Tirpitz's alternative Helgoland design with superfiring and wing turrets?

The scheme is real enough to discuss, but detailed English-language coverage is limited; it belongs among the many unbuilt battleship designs that need further archival study.

The cited alternative combines two superfiring turret groups with two wing turrets rather than the historical hexagonal arrangement. On paper it could place ten guns on a broadside and eight into either end-on arc, an unusually strong distribution for the period. The layout would also create difficult handling, blast, weight, and internal-arrangement problems. The limited published trail makes it a good example of the many unbuilt battleship paths that require archival reconstruction rather than a single finished design plan.