ZCZC JA22
061511 UTC NOV 26
VARNA RADIO
NAVWARN 808/26
BLACK SEA.VARNA BAY.
HYDROGRAPHIC CUTTER 231 IS CONDUCTING A
HYDROLOGICAL EXPEDITION
FM 0630 TO 1415 UTC FM 10 TO 13 NOV26.
ALL SHIPS TO NAVIGATE WITH EXTREME
CAUTION AND KEEP A DISTANCE OF 3 CABLES.
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