 The episode "Danger at Ocean Deep" is the only episode in which we  see John going on a rescue. He admits that he has been on just a  dozen or so rescue missions, while Scott ahs been out on every  single one. Therefore, unless Scott is forgetting that he didnt  take an active part in the rescue in "The Perils of Penelope", the  events of this episode should take place before those of both "The  Perils of Penelope" and "Atlantic Inferno".