A buoy. Body: red and white vertical stripes. Topmark: one red ball.
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White: isophase, occulting, one long flash every 10 seconds, or Morse A. This is a safe water mark. If it has a light, the light is white. The rhythm is isophase, occulting, one long flash every 10 seconds or Morse "A" (short, long). A white group of two flashes belongs to the isolated danger mark.