Were Olympic-class liners designed to carry 6-inch guns?
Short answerThey were not designed around that armament, but open deck positions could accept guns much as other liners did during wartime conversion.
NotesThe distinction is between purpose-built provision and later physical adaptability. Olympic and her sisters were civilian liners, not hidden warships designed around a naval battery. Their broad open decks nevertheless offered places where gun foundations and weapons could be installed. This flexibility helps explain why contemporary liners were more convertible than today's top-heavy cruise ships.