Published Resources Details Journal Article
- On quick steam launches
- The Engineer
- vol. 33, 19 April 1872, pp. 281-282
Thornycroft's steam launch Miranda (length 50 feet overall, beam 6 feet 6 inches, draught 2 feet 6 inches; trial speed 18.36 miles per hour), fitted with a 6-inch by 6-inch stroke twin cylinder inverted-vertical simple marine engine, operating at 600 revolutions per minute with steam supplied by a locomotive boiler. Directly coupled propeller 2 feet 6 and a half inches in diameter, pitch 3 feet four inches. A summary of F J Bramwell's paper 'On quick steam launches.' Read at the Institutution of Naval Architects meeting of 1872, the full text was published in the Transactions of the Institution of Naval Architects, vol. 13, 1872, pp. 269-279. Despite considerable scepticism Bramwell's experiments with the Miranda built by J I Thornycroft proved that is not axiomatic that high speeds could only be attained by vessels of great length.