hogging frame

from The Collaborative International Dictionary of English v.0.48

Hogging \Hog"ging\, n. (Naut.)
   Drooping at the ends; arching;-in distinction from sagging.
   [1913 Webster]

   {Hogging frame}. See {Hogframe}.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Hogframe \Hog"frame`\, n. (Steam Vessels)
   A trussed frame extending fore and aft, usually above deck,
   and intended to increase the longitudinal strength and
   stiffness. Used chiefly in American river and lake steamers.
   Called also {hogging frame}, and {hogback}.
   [1913 Webster]