IHO S-44

IHO S-44 is a global standard issued by the International Hydrographic Organization that defines how underwater charts for navigation should be created and formatted. It ensures consistency and accuracy in sailing maps, providing vital information such as water depths, hazards, and navigational aids. By following S-44 guidelines, hydrographic surveyors and chart producers create reliable charts that help mariners navigate safely through diverse maritime environments worldwide. Essentially, it sets the technical rules to ensure charts are precise, clear, and trustworthy for safe navigation at sea.