Steam-ships : $b The story of their development to the present dayFletcher, R. A.
History
Steam-ships : $b The story of their development to the present day
Fletcher, R. A.
Shipbuilding; Steamboats
In March 1859, Messrs. J. and W. Dudgeon issued a circular on the
subject of steam navigation direct to Calcutta round the Cape, pointing
out that “steam hereafter will be almost exclusively employed in the
transport of goods between East India and Australia and the United
Kingdom may be taken for granted; this is merely a matter of time.” The
circular continued that the Cape route would certainly be simple and
safe, and therefore superior to the overland route, especially if it
could be rendered expeditious and profitable. The conditions required
that vessels of not less than 5500 tons, builders’ measurement, be
supplied at a total cost per vessel of £150,000; the voyage, it was
anticipated, would take thirty or thirty-five days, or only a couple
of days more than the overland route. As a correct forecast of the
size of vessels which until a few years ago conveyed the great bulk
of the merchandise between Britain and the Far East, this statement
is interesting and shows how accurately the needs of the traffic were
estimated.
[Illustration: THE “NORMAN” (UNION-CASTLE LINE, 1894).]
In 1855 Messrs. A. and J. Inglis of Pointhouse, Glasgow, entered into
a contract “with a degree of boldness which only complete success
could have justified. They undertook to build the steamer _Tasmanian_
to the order of the European and Australian Steam Navigation Company.
The machinery, of over 3000 horse-power, was at that time considered
of the largest size, and to undertake the erection of it in a little
wooden shop barely twenty feet high, and furnished with a fifteen-ton
crane, was almost heroic. The soleplate of this set of engines weighed
40 tons, and had to be lowered with screw-jacks into a pit dug out to
give height under the travelling crane. Messrs. Inglis actually built
up the crank-shaft themselves, working the material in the smithy.
The _Tasmanian_ proved one of the fastest screw steamers built up to
that time, having easily attained over 14¹⁄₂ knots at Stokes Bay. Her
consumption of coal, about three pounds per indicated horse-power, was
for that day extremely moderate. The engines were constructed with
three cylinders, had a built crank-shaft, valves at the side, variable
expansion, steam reversing gear, a built propeller, and other fittings
which are still reckoned in that comprehensive term, ‘all modern
improvements.’ The engines worked most successfully until the general
adoption of the compound engine made so many admirable contrivances
obsolete.”[75] Shortly after building the _Tasmanian_, Messrs. A. and
J. Inglis began to build for the British India Company with excellent
results to all concerned, and since then they have constructed many
vessels for this famous company.
[75] _Engineering_, July 30, 1897.
Public-domain text, read in full here on John Shaqi.
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