Sigsbee fought in numerous engagements during the
American Civil War, mostly against Confederate forts and batteries. Sigsbee served aboard , , and from 1863 to 1869, when he was assigned to duty at the
Naval Academy. In 1871, he was assigned to the Hydrographic Office. He was first posted to the Hydrographic Office in 1873. He was assigned to the Coast Survey in 1874 and commanded the Coast Survey steamer
Blake from 1875 to 1878. He returned to the Navy Hydrographic Office from 1878 to 1882 and served as
hydrographer in the
Bureau of Navigation from 1893 to 1897. During his period on
Blake, he developed the Sigsbee sounding machine, which became a standard item of deep-water oceanographic equipment for the next 50 years. Sigsbee served at the Naval Academy from 1869 to 1871, from 1882 to 1885, and from 1887 to 1890. He served on the Board of Control for the
United States Naval Institute. He commanded on the European station from 1885 to 1886 and the training ship
Portsmouth from 1891 to 1892.
John Davis Long on the destruction of USS
Maine Sigsbee took command of the armored cruiser
Maine in April 1897. After
Maine was destroyed in February 1898, Sigsbee and his officers were exonerated by a court of inquiry. He then commanded in 1898 at the
Second Battle of San Juan and until 1900. In February, he was appointed Chief Intelligence Officer of the
Office of Naval Intelligence, succeeding Commander
Richardson Clover. He held that post until April 1903 when he was succeeded by Commander
Seaton Schroeder. He was promoted to
rear admiral on 10 August 1903. He assumed command of the
South Atlantic Squadron in 1904 and the Second Division,
North Atlantic Squadron, in 1905. He commanded as his
flagship on June 7, 1905, which sailed for
Cherbourg,
France. There, the remains of the late
John Paul Jones were taken aboard and brought home for his interment at the United States Naval Academy. ==Death and legacy==