The tug TG 6715 sank on the Dong Nai River near  Bien Hoa, Vietnam.   The tug was at anchor waiting for the water level to rise when it was struck by a barge.    The barge was one of many being towed carrying sand from Long An to Dong Nai which had been waiting for the river’s water level to rise.  While the barge was anchoring, the anchor line broke to the barge sending it downstream and crashing into the TG 6715.   One crewman from the tug fell into the river and was reported missing.  A search by authorities and local fisherman found no trace of the crewman. The remaining crew were safely rescued.   Authorities are conducting an investigation into the incident.