HMS Herald Ship Atholl class 28 gun corvette of the Royal Navy which was converted to a survey ship for work in the Pacific. Milestone Constructed Cochin, British India 1820 - 1821 {"name":"Constructed","target":"","target_text":"Cochin, British India","date":{"#markup":"<span class='date'>1820<\/span><span class='separator'> - <\/span><span class='date'>1821<\/span>"},"date_start":"1820","date_end":"1821"} Destroyed 1862 {"name":"Destroyed","target":"","target_text":null,"date":{"#markup":"<span class='date'>1862<\/span>"},"date_start":"1862","date_end":"1862"} Name Alternate HMS Termagant 1821 - 1824 {"name":"Alternate","target":"","target_text":"HMS Termagant","date":{"#markup":"<span class='date'>1821<\/span><span class='separator'> - <\/span><span class='date'>1824<\/span>"},"date_start":"1821","date_end":"1824"} Position Ship's captain Denham, Henry Mangles 1852 - 1861 {"name":"Ship's captain","target":"Denham, Henry Mangles","target_text":null,"date":{"#markup":"<span class='date'>1852<\/span><span class='separator'> - <\/span><span class='date'>1861<\/span>"},"date_start":"1852","date_end":"1861"} Type Ship {"name":"Ship","target":"","target_text":null,"date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null}