Specification of a steel swim barge for the Thames Steam Tug and Lighterage Company Ltd. The item itself is a rough typed booklet dated April 21st 1911 according to it's title page. In the space of 9 pages (including an index) the document details everthing from the barges dimensions to the prices of fitting specific parts. The remainder of the document is taken up by a fold out schematic of the barge.

Administrative / biographical background
A summary of the company and its history can be found at lighterageandtugs.co.uk.