ZCZC XA03 131257 UTC APR 26 REYKJAVIK VIA GRINDAVIK THE LIGHTHOUSE INTO SANDGERDI HARBOUR WITH INTERNATIONAL NUMBER L4476 IS UNLIT FROM APRIL 13TH 2026 DUE TO MAINTENANCE. DURATION OF MAINTENENCE IS UNKNOWN. MARINERS ARE ASKED TO NAVIGATE THE AREA WITH CAUTION. SANDGERDI HARBOUR. NNNN