Q&A ยท 41:47-48:18

Superfiring turret blast and sighting hoods

A detailed source discussion traces axial-fire restrictions from open sighting hoods through Neptune's periscopes and Hood's revised turret faces.

Question

Could British superfiring turrets fire close to the ship's axis without blast disabling the lower turret?

Short answer

Early open sighting hoods exposed lower-turret crews to blast and imposed end-on firing restrictions, while periscopic sights and turret-face ports progressively reduced the problem.

Notes

Blast from an upper turret could pass through open sighting hoods and endanger the lower turret's operators, especially under local control. The cited manuals and design histories therefore describe restricted arcs for early British superfiring arrangements. Tiger's A turret used face-mounted sighting scopes, Neptune introduced periscopic sights that allowed the upper guns to fire closer to the axis, and Hood moved the sights to ports in the turret face. Later arrangements reduced the crew hazard without changing the basic physics of muzzle blast. Whether British superfiring turrets could fire end-on therefore depends on the date, turret design, and sighting arrangement.