presidentialyacht

"The sixth USS Delaware (BB-28) of the United States Navy was a battleship launched in 1909 and scrapped in 1924, the lead ship of the Delaware class." en.wikipedia.org/wiki/USS_Delaware_(BB-28)

Possibly at the Naval Review 14 October 1912 in New York, where a couple of other photos of US warships in the Bain collection were taken. Delaware participated in that review--see the Wikipedia article above. There is a Naval Historical Center page on the Mayflower: USS Mayflower (1898-1931, later PY-1) The ship has a long and fascinating history--see the Wikipedia article. According to that article, the Mayflower was the Presidential yacht, so it seems likely this was the naval review mentioned above. I find it amusing that the designation was PY-1, the equivalent of today's "Air Force 1".

Naval technology in transition

This conference ended the Russo-Japanese War. See en.wikipedia.org/wiki/USS_Mayflower_(PY-1) "Recommissioned on 25 July 1905 with Commander Cameron McRae Winslow in command, she immediately sailed for Oyster Bay, Long Island, New York, to prepare for the peace conference which ended the Russo-Japanese War. President Roosevelt introduced the Russian and Japanese delegations on board Mayflower on 5 August. " See other LoC pictures of USS Mayflower www.flickr.com/photos/library_of_congress/2368283455/ www.flickr.com/photos/library_of_congress/2369117318/