ZCZC JA72 081447 UTC MAY 26 VARNA RADIO NW 263/26 BURGAS BAY.MV CHRISTINA-SZ1279 WILL CARRY OUT HYDROGRAPHICGEOPHYSICAL AND DIVING SURVEYS FM 08.05. TO 30.09.2026 IN BURGAS BAY ALONG A LANE WITH AXIS: 42 36531N 027 41266E 42 35418N 027 44729E 42 35286N 027 45097E 42 34465N 027 52693E AND WIDTH 5 CABLES. MARINERS SHOULD KEEP A SAFETY DISTANCE OF 3 CABLES FM THE WORKING RESEARCH WATERCEAFTS AND TO NAVIGATE WITH INCREASED CAUTIONS. NNNN