SECURITE 251500 UTC JUL 2023 NAVAREA IX (.) 284/23 (.) CENTRAL GULF (.) BAHRAIN (.) CHARTS BA 2886, 3736, 3737 AND 3790 (.) LOCAL CHART 1501 2. UNDER BRIDGE MAINTENANCE OPERATION IN PROGRESS AT SHAIKH KHALIFA BIN SALMAN CAUSEWAY (.) 04 SPECIAL MARK BUOYS TEMPORARILY DEPLOYED TO ISOLATE OPERATION AREA: N1 26-13.23N 050-37.58E N2 26-13.19N 050-37.52E S1 26-13.05N 050-37.68E S2 26-13.10N 050-37.74E 3. MARINERS CAUTIONED 4. CANCEL NAVAREA IX WARNING 276 OF 2023