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Nautical Charts 🗺️ The IHO sets the standards for nautical charts through the S-4 Regulations. Under the SOLAS convention, all ships are required to carry “adequate and up-to-date nautical charts”. Visit iho.int/en/iho-s-101-t… to know more! International Maritime Organization

Did you know that there are Autonomous #Underwater Vehicles Capable of Doing #OceanResearch in the depths of the #ocean? 🌊 A18D by Exail, is capable of deep-water operations down to 3000 meters and accurately performs #mapping, sonar imaging, and high-resolution #seabed surveys.

Multibeam Echosounders (MBES) 🌊are instruments used to map the #ocean floor in #hydrographic surveys. Benefits are: ✅ Real-time Data Acquisition ✅ #Backscatter Data ✅ Water Column Data Curious for more? Keep following the IHO #adventcalendar📅 KONGSBERG INFOMAR

Under SOLAS, contracting governments are required to provide and maintain hydrographic products and services🔍Members of the IHO have access to a community of global experts which assist countries in fulfilling their requirements for hydrographic services. 🌐⚓International Maritime Organization

To this day, there remains about 74% of the ocean floor that we do not fully know. GEBCO bathymetry is trying to tackle this issue and working to get a complete high-resolution map of the ocean floor. To learn more visit: iho.int/en/gebco UNESCO Ocean Seabed 2030 NOAA

MACHC25 was held, where various countries explored Digital #Maritime Services, the Izzul Aarifeen Maritime Buoyage System, #Hydrographic #Science #Education, a standardized grid framework for S-101, and a new Virtual Port Situational Awareness Service shown by UK Hydrographic Office. International Maritime Organization Autoridad Marítima de Panamá

There are different features in the #ocean that are of interest not only to #mariners but to all ocean #enthusiasts! 🌊According to S-4, nautical charts can depict a wide range of features, including Environmentally Sensitive Areas, such as seal sanctuaries 🦭

Coral reefs 🪸 As part of the IHO’s Crowdsourced Bathymetry Initiative, 🚤researchers like Dr. Beaman are mapping Australia’s Great Barrier Reef. Such initiatives can help safeguard coral reefs for future generations.🔗Interested in participating? Contact: [email protected]

#Buoys #buoys #buoys. 🌊🛳️ The IHO S-100 universe supports a variety of different ocean domains. IALA for example is developing the  S-201 Aids to Navigation Information, which provides supplementary details on beacons, racons, lights, sound signals and buoys—today’s feature.

All the advanced instruments used in #navigation today weren’t always available. 🌌🛳️ Before modern #technology, mariners relied on the #stars ✨to find their way across the oceans. Even today, it continues to serve as a reliable backup for #electronic navigation systems 🗺️.

The latest issue of The International Hydrographic Review (#IHR) is out! 🌊Individual articles: ihr.iho.int/issues/volume-… 🌊The entire issue: ihr.iho.int/issue-archive/ To submit an article, please visit ihr.iho.int/submit-an-arti…

The Ocean is the last great Exploration #Adventure 🌊 The #ocean provides invaluable resources. #Transportation🚤, #food🐟, #tourism🤿, #oxygen, #energy , and more. #Hydrography makes us more knowledgeable to effectively manage and sustainably use these resources! NOAA Ocean Exploration

The IHO works to ensure all the world's seas, oceans, and navigable waters are surveyed and charted 🗺️The marine environment is ever-changing due to natural processes and human intervention. Hydrography helps monitor these changes, giving States data to make informed decisions🌐

🌟The Evolution of Navigation Instruments 🌟Safety of #navigation has evolved over the centuries. Ancient techniques included relying on landmarks, the #Stars ⭐, and the #sun ☀️Today, modern navigation relies on #Satellite Navigation, #Radar and Transponders. #AdventCalendar

🌊 A tide gauge continuously records water level changes. Data crucial for safe #navigation, #maritime #engineering & #habitat #preservation 🪸 Efforts by antarctica.gov.au have focused on long-term data collection with gauges in #Antarctica ❄️ #adventcalendar NOAA's Ocean Service

Have you heard about the S-100? 🌊Data standards based on S-100 elevate the maritime domain to a new level of #digitalization for #marine geoinformation. It enhances #navigation, making it safe and considerate of people, #nature, and ships. iho.int/en/s-100-unive… #adventcalendar

🌊 Hydrography, Maritime Navigation & the IMO 🛳️ The IHO and International Maritime Organization have a cooperation agreement that supports the use of hydrographic data for the safety of navigation, the protection of the marine environment, and the promotion of sustainable maritime activities.#adventcalendar

Satellite-Derived Bathymetry #SDB🛰️ Understanding the #depth and shape of the #seafloor in shallow waters is crucial for the safety of #navigation, #marineconservation 🪸, and the #BlueEconomy 🏖️. SDB uses #satellite sensors to calculate shallow water depths #remotesensing EOMAP

#Monaco: Home to the IHO🌊In 1921, the IHO was founded to boost #international cooperation in #hydrography. Prince Albert I, was a key figure in promoting such cooperation. Today, we continue to harmonize hydrographic knowledge worldwide🌐🔍 youtu.be/ZXqaTNI1adg?si… Gouvernement Monaco

🎄Happy Holidays🎄 The IHO hope you will have Happy Holidays and we send our best wishes for 2025. Thank you for following our hydrography #AdventCalendar ! We hope you enjoyed learning about the role of #hydrography on maritime safety, #ocean knowledge, and marine conservation.