Crews of the Coast Guard, Philadelphia fire and police, New Jersey police and others are searching for two people after a collision between a duck boat and a barge near Penn's Landing in Philadelphia. Ten of the passengers were taken to Hahnemann University Hospital. At 2:39 p.m. a collision occurred between a duck boat, with 35 passengers and two crewmen, and the 250-foot tug and barge Caribbean Sea on the Delaware River in about 10 feet of water. The Coast Guard launched boat crews from Station Philadelphia and Aids to Navigation Team Philadelphia and an MH-65C Dolphin helicopter crew from Air Station Atlantic City, N.J., to rescue those in distress. The Captain of the Port of Philadelphia has closed the river to all traffic between the Walt Whitman and Ben Franklin bridges until further notice.