The 58 meter long passenger vessel Sehit Mustafa Aydogd allided with the Galata Bridge in Instanbul, Turkey.   The vessel was attempting to dock at the Karaköy pier when it suffered a mechanical breakdown.    The passenger vessel drifted until it struck the Galata Bridge.   Some passengers were thrown off their feet while others attempted to go overboard from the stern rail onto the bridge.   A tug reached the scene shortly afterwards and was able to attach a towline to the disabled Aydogd.   The vessel was pulled to the pier and berthed where passengers were landed.  No reports of injuries, damage or pollution being released.