PULAU INDAH, 21 Jun 22 - Happy World Hydrographic Day sincerely from #NavyPeople National Hydrographic Centre.  Every year on June 21st, World Hydrography Day is commemorated to promote awareness of the importance of hydrography, safe navigation and the conservation of the maritime environment.  Coinciding with this year's theme, to date various efforts involving hydrography have been implemented to ensure works involving marine environmental protection, coastal zone management, marine protected areas, marine spatial data infrastructure to be implemented successfully as a result of hydrographic survey.