ZCZC JA93 111313 UTC SEP 26 VARNA RADIO NAVWARN 623/26 BLACK SEA. SOZOPOL BAY. FM 14 SEP TIL_ 30 OCT 2026 UNDERWATER HYDRO-ENGINEERING ACTIVITIES FOR CONSTRUCTION OF A MUSSEL FARM SEA SOUL IN AREA BOUND BY: 42-26.167N 027-41.633E, 42-26.250N 027-41.800E, 42-26.183N 027-41.917E, 42-26.100N _27-41.667E. PROHIBITED FOR NAVIGATION,ANCHORING, DRIFTING,SETTING OF NETS AND FISHING. ALL SHIPS TO NAVIGATE WITH REDUCED SPEED AND INCREASED CAUTION. NNNN