MIZZENMAST MATES U.S. Navy sailors secure a sail to a yard on the mizzenmast of the USS Constitution in Charleston, Mass., June 17, 2013. The Constitution's sailors conduct training during spring and summer months to learn seamanship techniques used aboard "Old Ironsides" since the 1790s. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 948726-D-ONE93-444.jpg Photo Gallery