The National Transportation Safety Board (NTSB) has concluded its investigation and has issued a full report about the incident on the towing vessel Spence, which caused it to list badly before finally sinking. The incident occurred on 14 December 2015 about 115 nm north of Cartagena, Colombia.
The NTSB report says that the list increased despite efforts by the crew to correct it. Consequently, the captain activated the vessel’s emergency position indicating radio beacon (EPIRB), and the crew climbed onto the barge that the Spence was towing. The towing vessel sank shortly thereafter. US Coast Guard District 7 received the EPIRB alert and directed the Coast Guard cutter Decisive to the scene. On arrival, the Decisive rescued the four crew members from the drifting barge. Three crew members sustained non-life threatening injuries.
