ZCZC TF69 050520 UTC MAY OOSTENDERADIO MSI QQIYXWY BE EEZ PILOT AND VTS SERVICE MESSAGE SHOREBASED VTS_CENTRE ZEEBRUGGE DECREASED SERVICE LEVEL VTS WANDELAAR APPROACH KAN 60 TEMPORARY NOT RESPONSIVE DURING RADAR ASSISTANCE ON VHF 4 VTS RADAR ZEEBRUGGE VHF 19 IS CLOSED VTS RADAR CONTROL ZEEBRUGGE VHF 4 IS CLOSED, EXCEPT FOR LNG CARRIERS NNNN