Fitting twin 14-inch turrets into old battlecruiser hulls

Could the proposed twin 14-inch turrets fit the existing battlecruiser barbettes?

The fit is presented as possible but tight when the working space inside the barbette is considered. A raider-hunting rebuild would probably use six guns in three twin turrets and require substantial alterations.

Barbette diameter and the space occupied by the machinery inside it are treated as different measurements. On that basis, the proposed fit is judged possible after modifications of a few inches, though it would be tight. The decision then becomes one of cost, urgency and the job required of the rebuilt ship. Weak protection would limit the usefulness of the old Lion hulls. The suggested employment is hunting surface raiders such as Graf Spee, with six 14-inch guns in three twin turrets. This would involve considerable reconstruction and essentially reuse the hull as the starting point.