The USS Constitution fires a 19-gun salute to the city of Boston, Mass. The USS Constitution fires a 19-gun salute to the city of Boston, Mass., during a turnaround cruise on July 16, 2005. Constitution, the world's oldest commissioned warship afloat, is turned periodically to even out the effects of weathering on its wooden hull. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 363577-U-LDH20-400.jpg Photo Gallery