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- n. Plural form of keelson.
Sorry, no etymologies found.
Except for scattered ribs, frames, and keelsons, they have disappeared with few traces.
In the case of Fig. 1, which represents the City of Rome, the largest of the three, it will be seen that the main framing of the vessel is entirely transverse, with very heavy keelsons in the bottom, and large partial bulkheads or web frames, and the outside plating arranged on what is termed the edge to edge principle, with a great portion of it double.
In loading nitrate a stout platform must be erected athwart ship, above the keelsons, in order that the foundation of the cargo may be laid level; for, as the sacked nitrate is piled, the pile must be drawn in gradually until the sides meet in a peak like a roof.
Four means are therefore employed to hold the parts together lengthwise -- keelsons, shelf-pieces, fillings, and some form of truss.
Even more energetic in taking profit from the sea were the Puritans who came to Massachusetts Bay in 1629, bringing carpenters and shipbuilders with them to hew the pine and oak so close at hand into keelsons, frames, and planking.
Her tower revolves by means of a small engine, and its weight rests on the central shaft, the lower portion of which bears on the keelsons.
Servia is of the usual alternate outer and inner strake system, partly double; while the third section, the Oregon, approaches more nearly to the ordinary system of framing and plating usually adopted, but it will be seen that she was well tied in the bottom by very heavy intercostal and plate keelsons, as well as in the top by heavy stringers and sheer strakes, with much of her plating doubled, and heavy web frames inside.