How much did information from Royal Navy ships repaired in US yards affect US Navy damage control before the Second World War?
Short answerMore than zero, though probably less than it should have; British repair needs highlighted armour quality control and emergency-power backups.
NotesThe discussion says US yards learned from British armour workmanship and from the modifications British ships requested. Similar material mixtures could still produce different results because British production retained strong institutional quality control. Extra emergency power and backup arrangements were especially visible clues to combat-survivability needs. The effect on American practice is judged real but smaller than the lessons potentially available from the repair work.