Was the propeller inventor also the turret designer?

Was the Ericsson associated with the screw propeller the same person who developed a gun turret?

Probably the same engineer, although responsibility for a later turret development remains uncertain.

John Ericsson is tentatively identified as the same engineer associated with both screw propulsion and a gun turret. His broad ability as a naval architect and engineer is emphasized. The reply then hesitates over whether a later turret development belonged to him or his son, leaving that detail unresolved.