German experiments with alternative battleship turret layouts

Did German designers consider triple and quadruple battleship turrets?

The reply tentatively recalls alternatives but does not identify or date a particular triple or quadruple design.

A triple 13.8-inch turret proposal is tentatively recalled alongside the German choice of twin 15-inch mounts. A later question asks when a quadruple 12-inch turret was considered. German engineers are described as exploring many arrangements, although no date or specific design is supplied. Considering an option is distinguished from selecting it for a ship. The exact proposals and chronology remain unresolved.