The 17th Improvement
Consists in strengthening the under part and sides of the keel, the upper part
and sides of the keelson, and the under part and foreside of the forefoot of a
vessel, and protecting them from chafing, and twisting, and breaking --
which I do by bolting to them bars of flat iron, similar to those for the
beam-stringers hereinbefore specified.
. . .
Shipwreck and Collisions at Sea greatly prevented by Christophers' Patent Improvements in Naval Archtecture. With four plates.
London: J. Olliver, 59, Pall Mall; P. Richardson, 23, Cornhill. Liverpool: Deighton & Laughton. M.DCCC.L. 8vo, (4), 112 p, 4 pl.
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Copyright © 1996 Lars Bruzelius