Definition of keelson in English:

keelson

(also kelson)

noun

  • A structure running the length of a ship and fastening the timbers or plates of the floor to its keel.

    • ‘One of the main uses we have made of it is for the keelson which required a piece of wood 6.7m in length.’
    • ‘When we found she could sail in stronger winds, we fitted a stronger mast and rigging and, later, a keelson, an internal timber spanning three frames.’
    • ‘‘A few short ribs at the bow and stern will be fitted later when the new keelson is in place,’ said John Steer, one of the committee members.’
    • ‘There was no central keel in the hull, but a large extruded central keelson was used.’
    • ‘The ribs would have been treated with steam so that they could be bent sharply over the keelson.’

Origin

Middle English kelswayn, related to Low German kielswīn, from kiel ‘keel of a ship’ + swīn ‘swine’ (used as the name of a timber).

Pronunciation

keelson

/ˈkiːls(ə)n/