What kinds of ships were in the American squadron that opened Japan?
Short answerThe spoken answer mixes armoured and unarmoured classifications and does not establish a reliable account of the squadron's ships.
NotesThe spoken answer alternates between ironclad frigates and unarmoured frigates without providing a dependable list of ships. A later comparison invokes HMS Warrior while mixing wooden appearance, wooden construction, and armour. Those are different characteristics and cannot establish one another from appearance alone. The identification remains uncertain here, so these remarks should not be used as a verified account of the squadron's composition.