They were braced internally with a series of built-up longitudinal timbers called " keelsons ".
2.
Her keel is of white oak, also her keelsons of three thicknesses, all edge-bolted.
3.
It usually heavily tapered into a joint with the internal keelson, although keelsons were by no means universal.
4.
It usually heavily tapered into a joint with the internal keelson, although keelsons were by no means universal.
5.
Plans of the ship also show a double keelson to lock the keel, floors and frames in place.
6.
To strengthen her wooden frame and hull, " Pretoria " was constructed using steel keelson plates, steel chords, and steel arches.
7.
The " Ruark " has been extensively rebuilt, with her keel, keelson, some ribs and portions of the centerboard trunk believed to be original.
8.
These ships had frames, keels and keelsons of white oak " of the best quality ", with port stanchions of stems were also strengthened with iron strapping.
9.
The replica standing mizzen is built to this shorter measurement and stepped in the hold on the keelson, as is the model in the National Maritime Museum in Greenwich.
10.
The keelson of an open boat is normally arranged to be flush with the bottom boards so as to reduce the chance of the crew's tripping over it.
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