ἐν τῷ ἐνδεκάτῳ μαθήματι ἐμάθομεν ὅτι, χρήματα νῦν ἔχοντες, τῷ τε Δικαιοπόλει καὶ τῷ Φιλίππῳ ἔξεστι εἰς τὴν Ἐπίδαυρον ἀποπλεῦσαι (ὡρμήσασθαι, ἐν νηὶ πορεύσασθαι). (All 1st aorist infinitives to express the idea of setting out, simple action: the emphasis is on being able to travel to get help from Asclepius, not on the duration, the progress of the travel itself)
So what happened next?
What did the Greeks always do before setting out on a journey, before undertaking anything in fact? (Remember lesson 2b, before seeding, lesson 8b before leaving home)