British 5.25-inch and 4.5-inch rearmament options

Could French 138.6 mm destroyer mounts be converted to take British 5.25-inch guns?

Possibly, subject to production and an uncertain turret fit. The ammunition raises a destroyer-use concern, and 4.5-inch turrets are another option.

A British 5.25-inch conversion is considered possible, depending on gun production and the fit aboard the French ships. The stated 133 mm caliber leads to a tentative suggestion that an existing turret could be adapted, although the recollection about compatibility is explicitly uncertain. The ammunition is also described as poorly suited to destroyer use. British 4.5-inch turrets, compared with a Battle-class arrangement, offer another possible installation.