Nore: my turret position nomenclature might be amiss
AB 6
Three turrets
ABC 2
ABY 29
Four turrets
APQY 10
AQXY all centerline ('Dante') 8
ABQY+ABXY 44
Five turrets
APQXY (2 wing turrets) 17
ABQXY + ABXYZ (all centerline) 36
Six Turrets
ABPQXY All centerline 6
AOPQXY 2 wing turrets 2
ACDPQY(??) Hexagon - 10(!)
Seven turrets 1

