Medium and extreme clippers įrom 1851 or earlier another type of clipper ship was also being built, the medium clipper. The Rainbow was designed and built with great care and was not launched until January, 1845. One critical observer declared that her bow had been turned "outside in," and that her whole form was contrary to the laws of nature. Her bow with its concave waterlines and the greatest breadth at a point considerably further aft than had hitherto been regarded as practicable, was a radical departure, differing not merely in degree but in kind from any ship that preceded her.
This vessel, the first extreme clipper ship ever built, was therefore, the direct result of Griffeths's efforts for improvement. This proposed departure from old methods naturally met with much opposition, but in 1843, the firm of Howland & Aspinwall commissioned Smith & Dimon, of New York, in whose employ Griffeths had spent several years as draughtsman, to embody these experimental ideas in a ship of 750 tons, named the Rainbow. Another improvement which he proposed was to fine out the after body by rounding up the ends of the main transom, thus relieving the quarters and making the stern much lighter and handsomer above the water-line. Griffeths advocated carrying the stem forward, in a curved line, thereby lengthening the bow above water he also introduced long, hollow water-lines and a general drawing out and sharpening of the forward body, bringing the greatest breadth further aft.
CLIPPER SHIP SENTENCE SERIES
Later he delivered a series of lectures on the science of ship-building which were the first discourses upon this subject in the United States. Griffeths, of New York proposed several improvements in marine architecture, which were embodied in the model of a clipper ship exhibited at the American Institute, in February of that year.
CLIPPER SHIP SENTENCE PORTABLE
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