The 74 meter long dredger Jin Hang Bo 53 sank at Port Elizabeth, South Africa.   One of the dredger’s four legs collapsed causing the vessel to sink.  After the vessel sent out a distress call, rescuers responded quickly and safely removed 15 crew off the Jin Hang Bo 53.    No reports of pollution being released, but floating booms were placed around the vessel to contain any pollution.  The dredger is slated to be salvaged.   Authorities are conducting an investigation into the incident.