Term Definition
floor keelson Timbers bolted to the floors and running parallel to the main keelson.
keel A steel beam or timber, or a series of steel beams and plates or timbers joined together, extending along the center of the bottom of a ship from stem to stern and often projecting below the bottom, to which the frames and hull plating are attached.
keelson A structure of timbers or steel beams that are bolted to the top of a keel to increase its strength. Also spelled kelson.
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