| 1. | Hydrographic services in most countries are carried out by specialised hydrographic offices.
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| 2. | The hydrographic office evolved into the independent naval Hydrographic Service in 1921.
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| 3. | From 1882 until 1888 he was in charge of the Hydrographic Office.
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| 4. | Individual hydrographic offices produce national chart series and international chart series.
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| 5. | In 1877, he came ashore once more, this time assigned to the Hydrographic Office.
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| 6. | In July, he became Officer in Charge of the Branch Hydrographic Office in Honolulu.
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| 7. | The United Kingdom Hydrographic Office is located on Admiralty Way.
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| 8. | Nautical charts are issued by power of the national hydrographic offices in many countries.
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| 9. | In 1823, 1824, and 1825, the Navy Department tried to establish a hydrographic office.
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| 10. | The islands were mapped in 1935 during the Hydrographic Office of the UK Admiralty.
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