 Roto ship built by MIT students next to USS Constitution |
 Roto ship next to the USS Constitution |
 Rotoship and USS Constitution |
 New and old: Roto ship and USS Constitution in Navy Yard. |
 USS Constitution. |
 Ship USS Constitution |
 USS Constitution - Navy Yard. |
 USS Constitution - old spars aloft. |
 USS Constitution - Navy Yard |
 Rotor ship next to USS Constitution. Tug 'Iwana'. |
 Old and new: Rotor ship next to USS Constitution in Navy Yard |