In two separate incidents, police and Coast Guard personnel pulled 19 individuals--including children--from the water after their boats swamped. Sixteen people were pulled from a 40-foot Sea Ray boat approximately a mile from shore and submerged so that its passengers were ankle-deep in the Long Island Sound Friday. Seven of the rescued were children. The boat began foundering when an exhaust hose broke, causing water to fill the boat. Separately, three Staten Islanders were rescued from the Hudson River near Peekskill when their sinking boat was in the path of a fuel barge.