CONCRETE SHIPS.
GREAT AVAR PRECEDENT. (British Official 'VVirelcsjS.l /■ ‘ RUGBY, June 3. In connection with the use of concrete ships by the Admiralty, it is pointed, out that during and after the last war, when 1 here was a shortage of steel and general shipbuilding facilities, about 100 concrete ships, totalling 150,000 tons carrying capacity, 'were built in Britain, Norway, the United States, France, Italy and elsewhere. Some of these vessels were as large as 6500 tons and proved quite successful. None have been built since 1922. Since those days British concrete research has been unceasing. The compressive strength has been increased threefold, great improvements have been made in the steel reinforcement, and a tensile strength of 27,0001 b. to the square inch is ninv possible, compared with only 16,0001 b. in 1.918.
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Manawatu Standard, Volume LX, Issue 158, 5 June 1940, Page 7
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132CONCRETE SHIPS. Manawatu Standard, Volume LX, Issue 158, 5 June 1940, Page 7
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