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The keelson or kelson is a reinforcing structural member on top of the keel in the hull of a vessel.[1] Originally used on wooden ships, in modern usage a kellson is any structural member used to strengthen the hull or support any heavy weight.[2]
In part V of “Song of Myself”, American poet Walt Whitman uses the phrase: “And that a kelson of the creation is love;” to imply that love is akin to a keelson, or backbone, that supports humanity.