Keywords: USS Dorchester (SP-1509).jpg Schooner Dorchester in commission as United States Navy patrol vessel USS Dorchester SP-1509 with a motorboat alongside http //www history navy mil/photos/sh-usn/usnsh-d/id1509 htm Sometime between August 1917 and November 1918 U S Naval Historical Center photograph; collection is in the public domain PD-USGov-Military-Navy Original upload log en wikipedia USS+Dorchester+ 28SP-1509 29 jpg 2009-05-03 00 30 Mdnavman 740×480× 40921 bytes <nowiki> Schooner Dorchester in commission as United States Navy patrol vessel USS Dorchester SP-1509 with a motorboat alongside http //www history navy mil/</nowiki> Ships built in 1893 Patrol vessels Patrol vessels of the United States Naval ships of the United States Schooners Ships under sail World War I ships of the United States |