FOUR MILLIONS FOR CONCRETE SHIPS
PROGRESS IN ENGLAND. Reports from the various reinforced concrete shipyards in the United Kingdom show that good progress is being made in the construction of 'lflOO-ton sea-going bargee for the Admiralty Department of Merchant Shipbuilding. Vessels of this class, says the "Board of Trade Journal," are urgently required, and the programme of construction already authorised comprises barges and other vessels representing some 200,000 tons of shipping, and a capital outlay estimated at nearly JC4,000,000, apart from the cost of land and shipyard plant. The saving in steel is fully 70,000 tons on what would have 'been required for eteel ships of the same carrying capacity. It is believed that a still larger saving will be effected when practical data becomes available as to the minimum proportion of reinforcement that may be employed with safety. . ■ffhile the United States lias only two concrete shipyards ready for operation, compared with nearly 20 in the United Kingdom, America is to be credited with the completion of one reinforced concrete steamship of 5000 ions capacity, and the United States Shipping Board has adopted a programme providing for tho construction of 58 concrete ships or 7500 tons capacity. Meanwhile the first rivetless steel vessel, whose launch in this country was recently announced, has come through her m'niden voyage with complete sue cess. With a full cargo und during rough weather, the pioneer craft answered satisfactorily in every way to the severe tesls imposed. liivpling will probably not be dispensed with altogether, a* in certain sections it is cheaper and quicker, but the principle of welded construction havinir been proved under the conditions peculiar to a ship at sea/ this method is like y to bo extensively employed as a combination of riveting and welding. In the case, for instance/ of some 10,000-ton ships to be constructed, the number of rivets to be used is reduced to 2} per cent. _____
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Dominion, Volume 12, Issue 45, 18 November 1918, Page 4
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319FOUR MILLIONS FOR CONCRETE SHIPS Dominion, Volume 12, Issue 45, 18 November 1918, Page 4
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