In addition to the international organizations that represent various stakeholder groups and have observer status in the IHO, the IHO Secretariat organizes open meetings and facilitates communcation channels, allowing external stakeholders provide valuable input to the work of the IHO.

External stakeholders include mariners, ship owners and operators, companies supporting Hydrographic Offices, maritime administrations, navigation equipment manufacturers, the oceanographic scientific community and product distributors.

The IHO regularly announces its latest publications and shares news with external stakeholders, keeping them informed of important development.