ZCZC JA97 271407 UTC MAR 26 VARNA RADIO ON BEHALF OF ROMANIA NAVWARN 27/BLACK SEA.ROMANIA.CONSTANTA 1.CANCEL NW 24/*TMPEMWPWYM WMBETWEEN 08.0.-31.07.2026 HYDROGRAPHIC MARINE ACTIVITIES WILL BE CONDUCTED BY THE SHIPS 'MS BOAT SEA 555 AI* 'M* *OAT S 610 WT' IN AREA: 4* PYNPOQN 028 40530E 44 06084N 028 41035E 44 05626N 028 4102*E 44 05633N 028 40517E PROHIBITED FOR NAVIGATION. CANCEL **IS MSG O* 31.0./2200 UTC NNNN