ZCZC TF91 240530 UTC JUN OOSTENDERADIO PILOT AND VTS SER_ICE MESSAGE MSI 275/26 BE EEZ 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 _9 IS CLOSED VTS RADAR CONTROL ZEEBRUGGE VHF 4 IS CLOSED, EXCEPT FOR LNG CARRIERS NNNN