Eight years ago, Capri Djatiasmoro watched helplessly as four Jet Skis ran over her friend while he was swimming at Brighton Beach. Decades ago, a line of buoys ran parallel to the shore, marking the boundary between swimmers and boaters. “Some boat and Jet Ski drivers don’t even know there is this law,” said Ms. Djatiasmoro, 72, a retired advertising executive and avid open-water swimmer who lives in Brooklyn. “Some know, but in the open water it’s hard to tell exactly where that mark is.” Jet Skis regularly come very close to the borough’s beaches, she said, especially in the late afternoon, after lifeguards have left for the day. “I love the ocean, I love swimming, and I want to keep people safe while enjoying these things,” she said.

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Persons: ”, “, Djatiasmoro, Sandy Hook Organizations: Jet, Brighton Beach, Coney Island Hospital, New York, Yorkers Locations: Coney, New York State, New York City, Brooklyn, N.J, Coney Island, Manhattan Beach