Most pilgrims in the days of Dirk III stayed around the church now known as the Küçük Ayasofya (the small Hagia Sophia). Here was the little harbour from where they could cross the Bosporus to end up in Asia.
At the right side of the Küçük Ayasofya you find a small doorway with a path leading under the railroadtrack to the busy Kennedy Cd. Turn right and follow ca 1000m till the Yenikapihabour. From where boats leave to , Guzelyali near Bursa (and Yalova or Bandirma/Tekirdag).