ZCZC QA68 251840 UTC AUG 26 SPLIT RADIO NAVWNG 309/26 CENTRAL ADRIATIC - TROGIRSKI ZALJEV CHARTS: 100-21, 46 FLOATING DAMS MARKED WITH RED FLASHING LIGHTS, IN 43-30,20N 016-13,20E, ESTABLISHED. NAVIGATION IN RADIUS OF 200 METERS FROM THE POSITION, PROHIBITED. WIDE BERTH AND REDUCED SPEED REQUESTED. NNNN