Mr Michael CHAU, Principal Marine Officer and Hydrographer of the Marine Department, tells us that the Hong Kong Hydrographic Office (HKHO) conducts hydrographic surveying in Hong Kong waters regularly and produces up-to-date nautical charts and other publications based on the data and information gathered.

Mr Michael CHAU, Principal Marine Officer and Hydrographer of the Marine Department, tells us that the Hong Kong Hydrographic Office (HKHO) conducts hydrographic surveying in Hong Kong waters regularly and produces up-to-date nautical charts and other publications based on the data and information gathered.

Mr Michael CHAU, Principal Marine Officer and Hydrographer of the Marine Department, tells us that the Hong Kong Hydrographic Office (HKHO) conducts hydrographic surveying in Hong Kong waters regularly and produces up-to-date nautical charts and other publications based on the data and information gathered.

Mr Michael CHAU, Principal Marine Officer and Hydrographer of the Marine Department, tells us that the Hong Kong Hydrographic Office (HKHO) conducts hydrographic surveying in Hong Kong waters regularly and produces up-to-date nautical charts and other publications based on the data and information gathered.