from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Nautical A timber or girder fastened above and parallel to the keel of a ship or boat for additional strength.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A longitudinal beam fastened on top of the keel of a vessel for strength and stiffness.
from the GNU version of the Collaborative International Dictionary of English
- n. A piece of timber in a ship laid on the middle of the floor timbers over the keel, and binding the floor timbers to the keel; in iron vessels, a structure of plates, situated like the keelson of a timber ship.
from The Century Dictionary and Cyclopedia
- n. A line of jointed timbers in a ship laid on the middle of the floor-timbers over the keel, fastened with long bolts and clinched, thus binding the floor-timbers to the keel; in iron ships, a combination of plates corresponding to the keelson-timber of a wooden vessel. See cut under keel.
- n. In iron ship-building, a longitudinal reinforcement of plates and bars in the interior of the vessel above the framing in the bottom.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a longitudinal beam connected to the keel of ship to strengthen it
Before we recovered it we had nearly killed ourselves with exhaustion, and we certainly had strained the sloop in every part from keelson to truck.
We are going to place the keelson, and a dozen pair of hands would not be too many.
Pencroft, descended to the dockyard, and proceeded to place the keelson, a thick mass of wood which forms the lower portion of a ship and unites firmly the timbers of the hull.
A loose bottom was therefore laid a few inches above the lining on each side of the keelson.
These are connected to the keelson, to the beams, and to each other by iron bands.
Under the boiler and engine there was only room for one keelson.
The keelson is also of pitch-pine, in two layers, one above the other; each layer
In addition, there are under the beams three rows of vertical stanchions between decks, and one row in the lower hold from the keelson.
From this plank keelson, the ribs were attached allowing the construction of the bottom and sides of the hull.
All of the boats were constructed using a plank keelson, a wide oak plank laid down the center of the boat from which the stern and bow posts were attached.