A 1937 cruiser built around six 15-inch guns

In 1937, how could six available 15-inch guns be used in a ship that the Treasury would accept as a large light cruiser?

Build a fast, well-subdivided gun platform and present it as an amphibious bombardment or command-support vessel rather than openly calling it a capital ship.

The proposal starts with a Courageous- or Glorious-sized hull carrying six 15-inch guns, backed by subdivision and protection approaching battleship standards. In 1937 that armament and size would exceed contemporary cruiser categories, so the real obstacle is Treasury and treaty presentation rather than basic naval architecture. Calling it a fast auxiliary would invite scrutiny because auxiliaries were officially speed-limited, while describing a multi-turret ship as a monitor was equally unconvincing. The panel therefore settles on a forward-bombardment support ship with amphibious command-and-control facilities, roles that could justify the guns without openly admitting a capital ship. Procurement labels can be used to reconcile a military requirement with political and treaty constraints.