Distress calls and warnings by the master of the Ride the Duck DUKW that his vessel was disabled were not responded to by the tug Caribbean Sea which was handling a barge which collided with the DUKW and sank it, says a preliminary report from the US National Transportation Safety Board.
Says the accident report: “On Wednesday, July 7, 2010, the empty 250-foot-long sludge barge The Resource, being towed alongside the 78.9-foot-long towing vessel M/V Caribbean Sea, allided with the anchored 33-foot amphibious small passenger vessel DUKW 34 in the Delaware River near Philadelphia, Pennsylvania. The DUKW 34, operated by Ride the Ducks, carried 35 passengers and 2 crewmembers. On board the Caribbean Sea were 5 crewmembers. As a result of the allision, the DUKW 34 sank in about 55 feet of water. Two passengers were fatally injured, and 10 passengers suffered minor injuries. No one on the Caribbean Sea was injured.