B. One hundred years of international cooperation in hydrography
C. Hydrography-enabling autonomous
D. Hydrography - contributing to the United Nations Ocean Decade
Explanation
World Hydrography Day is observed on June 21 every year to raise awareness about hydrography and the essential role that it plays in improved knowledge of the seas and oceans.
Theme 2021: One hundred years of international cooperation in hydrography
Theme 2022: Hydrography - contributing to the United Nations Ocean Decade
A. Hydrography - contributing to the United Nations Ocean Decade
B. Hydrography-enabling autonomous
C. None of these
D. One hundred years of international cooperation in hydrography
Explanation
World Hydrography Day is observed on June 21 every year to raise awareness about hydrography and the essential role that it plays in improved knowledge of the seas and oceans.
Theme 2021: One hundred years of international cooperation in hydrography
Theme 2022: Hydrography - contributing to the United Nations Ocean Decade
World Hydrography Day is observed on June 21 every year to raise awareness about hydrography and the essential role that it plays in improved knowledge of the seas and oceans.
Theme 2021: One hundred years of international cooperation in hydrography
Theme 2022: Hydrography - contributing to the United Nations Ocean Decade