Meaning of Isherwood framing

Ish'erwood fram"ing

Pronunciation: [key]
— Naval Archit. Naval Archit.
  1. a system for framing steel vessels in which light, closely spaced, longitudinal frames are connected by heavy, widely spaced transverse frames with deep webs. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.