Weathervane on an Isolated Island

Weather observers record clouds on isolated islands, and lighthouse keepers light up the sea every night. He shouted to the sea in Morse code, and she responded with a weathervane. They have never met each other in ten years, but they have become each other's only coordinates. On the night of the typhoon, he sent his last message: "The clouds are about to disperse." She flashed three times: "The sea remembers." The next day, his observation log floated on the sea surface, and the title page read: "Between the clouds and the sea, it is the sky that is loving us." She closed the log and did not light the lighthouse for the first time - because she finally understood that the deepest watch does not need to echo.