Thanks to the fact that nowadays more and more books are digitized we are able to read books that are some times for decades no longer available for the public for several reasons. That’s quite a pity while these books contains useful information while the archives are destroyed, incomplete or nor accessible. In his book for politicians and merchants Martin described all the countries part of the so-called civilised world. If available he published information dealing with the armed forces and the merchant trade shipping.
p. 111. “The Bermuda Floating dock. During the year a great iron floating dock, capable not only of taking the largest ship in the navy, but of careening her as well, has been completed for Bermuda. This structure is 381 feet long, 124 feet wide, 72 feet deep, and weighs 9,000 tons. This is a double dock, one within the other, the sides or “double skins” being 20 feet apart, and enclosing respectively a load chamber, balance chamber, and air chamber. "Water may be pumped into or from either of these chambers, so as to sink, lift, or tilt the dock as desired. This great work, designed by Colonel Clarke, of the Admiralty, was constructed and, after a slight hitch, successfully launched by Messrs. Campbell, Johnstone & Co., of North Woolwich. The hydraulic graving dock, of which the first example was erected ten years ago at the Victoria Docks, is having new innings. One has just been sent out to Bombay. It has 36 hydraulic presses in all, each of a force of 400 tons, so that the total lifting power is 14,400 tons, and including its “saucer” it will thus lift the heaviest ship in the navy. Docks upon the same plan are spoken of for Jamaica, Malta, Brindisi, and Dundee.”
Source
Van Nostrands’s Eclectic Engineering Magazine, volume I, 1869, p. 758.
p. 111. “The Bermuda Floating dock. During the year a great iron floating dock, capable not only of taking the largest ship in the navy, but of careening her as well, has been completed for Bermuda. This structure is 381 feet long, 124 feet wide, 72 feet deep, and weighs 9,000 tons. This is a double dock, one within the other, the sides or “double skins” being 20 feet apart, and enclosing respectively a load chamber, balance chamber, and air chamber. "Water may be pumped into or from either of these chambers, so as to sink, lift, or tilt the dock as desired. This great work, designed by Colonel Clarke, of the Admiralty, was constructed and, after a slight hitch, successfully launched by Messrs. Campbell, Johnstone & Co., of North Woolwich. The hydraulic graving dock, of which the first example was erected ten years ago at the Victoria Docks, is having new innings. One has just been sent out to Bombay. It has 36 hydraulic presses in all, each of a force of 400 tons, so that the total lifting power is 14,400 tons, and including its “saucer” it will thus lift the heaviest ship in the navy. Docks upon the same plan are spoken of for Jamaica, Malta, Brindisi, and Dundee.”
Source
Van Nostrands’s Eclectic Engineering Magazine, volume I, 1869, p. 758.
