The ferry pier of Çengelköy doesn’t get as much traffic as the public transport hub ports of Kadıköy, Eminönü or Karaköy. The morning I took the ferry to Emirgan there were only about fifteen other passangers besides me that hopped on board at Çengelköy. The route zig-zags from one side of the Bosphorus to the other stopping at the smaller piers unlike the bigger vapurs that plough between the main hubs. I think there are people on the boat that just come to enjoy the breeze and views.
This is a simple recording of the general ambiance on deck while we are still connected to the pier. After 1’00 you’ll hear the sea water splashing and echoing beneath a small catamaran tied to the pier (in the second picture), something I tried to get to the foreground by stretching over the railing. Listen to the recording here: