031800 UTC APRIL 2024 NAVAREA IX 135/24 CENTRAL GULF QATAR CHARTS BA 2523 AND 2886 1. GEOPHYSICAL SURVEY WILL BE CONDUCTED BY VESSEL HORIZON NOMAD FROM 26-35.538N, 052-00.094E TO 26-38.226N, 051-57.054E ON 03 APR 24(.) MARINERS CAUTIONED 2. CANCEL THIS MSG ON 082359 UTC APR 24