The 100 meter long, 4443 dwt freighter Werra became disabled while transiting the Bosphorus.  The Werra was en route to Constanta from Tuzla when it suffered engine failure.   The crew contacted the vessel traffic control which dispatched a tug and lifeboat to the scene.  The tug was able to take the vessel under tow and moored at Büyükdere.  No reports of injuries, damage or pollution released.