The development of the design of the 40 meter (131 foot) ketch ANTONIA is followed from the com­mission to the beginning of construction. The requirements of the client are reviewed against the final design. The scantlings for the basic structure are presented, along with their evolution. The progression of the rig from the original thoughts to the final version is presented. The stability and floodable Iength curves are shown. Lines, construction, sail plan, and accommodations drawings are pubIished, in addition to a call for designers to resume a more constructive attitude towards publishing original design work for the advancement of the profession.

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