usn

The USS San Diego (CA-6) was lost in 1918.
www.wikidata.org/wiki/Q7867999

See en.wikipedia.org/wiki/Caspar_F._Goodrich
"Caspar Frederick Goodrich (7 January 1847 – 26 January 1925) was an admiral of the United States Navy, who served in the Spanish–American War and World War I."

Bio from www.usna.edu/Library/sca/man-findingaids/view.php?f=MS_184
"Caspar Frederick Goodrich was a career naval officer, retiring with the rank of rear admiral. He graduated first in the U.S. Naval Academy Class of 1865, whose commencement was held in November 1864. From 1871 to 1874, he taught physics and chemistry at the Naval Academy. During this time, he helped found the U.S. Naval Institute, serving as president of that organization from 1904 to 1909. He was also a founder of the Naval War College, assuming the presidency of the school in 1889 and 1897-98, as well as being among its regular lecturers.

Goodrich was naval attaché to General Sir Garnet Wolsley during the British bombardment of Alexandria, Egypt in 1882. During the Spanish-American War, he was involved in the action at Santiago, Cuba. After duty as commandant of the New York Navy Yard from 1907 to 1909, he retired on 7 January 1909. He briefly returned to duty as commander of the Naval Training Unit and Pay-Officers Material School at Princeton University in 1918.

Considered an intellectual in naval circles, Goodrich authored several books and numerous articles, especially for the Naval Institute's Proceedings. From 1914 to 1916, he was president of the Naval Historical Society, another institution that he helped to organize. He died in Princeton, New Jersey on 26 December 1925 at the age of 78."

See en.wikipedia.org/wiki/Henry_Erben
"Henry Erben (5 September 1832 – 23 October 1909) was a rear admiral of the United States Navy, who served in the American Civil War and the Spanish–American War."

Presumably the ship is
en.wikipedia.org/wiki/USS_Olympia_(C-6)

"USS Olympia (C-6/CA-15/CL-15/IX-40) is a protected cruiser that saw service with the United States Navy from her commissioning in 1895 until 1922. She is currently a museum ship in Philadelphia."

"Olympia became famous as the flagship of Commodore George Dewey during the Battle of Manila Bay in the Spanish–American War in 1898. The ship was decommissioned after returning to the U.S. in 1899, but was returned to active service in 1902."