10/11   TUGBOAT
        http://koti.mbnet.fi/~soldier/towboat.htm
        \_ Pretty amazing, but FYI, most boats of that size have been
           designed to do this since at least the early 20th century.
           My dad's 38 foot salmon trawler (built early '30s) flipped
           completely over in high seas several times and managed to right
           itself.  The tugboat was very lucky that the river level
           was high enough that it didn't collide with the bottom. --lye