ZCZC JA90 121730 UTC MAY 26 VARNA RADIO NAVWARN 275/26 NE OF CAPE GALATA. HYDROGRAPHIC CUTTER 231 WILL CARRY OUT HYDROGRAPHIC ACTIVITIES FM 0500 TO 1500 UTC FM 13 TO 15.05.2026 IN REGION: 43 182N 028 070E 43 182N 028 104E 43 145N 028 086E 43 145N 028 051E PROHIBITED FOR NAVIGATIONANCHORING FISHINGDIVING AND ANY TYPE OF UNDERWATER ACTIVITIES.THE CUTTER WILL LOWER OUTBOARD EQUIPMENT AND AN AUTONOMOUS UNDERWATER EQUIPMENT AND WILL BE LIMITED IN ITS ABILITY TO MANEUVER. NNNN