Would a 75 mm anti-aircraft mount available in 1944 replace the quadruple 40 mm Bofors?
Short answerPotentially on some ships, as suitable installations became possible; the answer does not expect every 40 mm quad to be replaced.
NotesThe answer accepts that some ships could exchange quadruple 40 mm Bofors mounts for the proposed weapon in 1944. Installation would depend on whether a vessel could take the new mount. The 3-inch weapons are considered worthwhile, but no fleet-wide replacement is expected. No particular ship class or installation limit is specified.