WORLD'S FASTEST SUBMARINE

Taihape Daily Times, 14 July 1919, Page 5

WORLD'S FASTEST SUBMARINE

1“! The fastest. §snbrii£ifi7ne"*'}ves;'s)els';rfin 5 l the world were designed and eons‘truct- - ed for uthe Brit.ish7:“Navy during the ljwar. They were evolved in response 1' “ltd” thed d"eiill"and"'fOi:'"Submersible crafts’ ‘ 7 ' which “couldl .1;e‘e1; "st‘alti'e‘n with‘ the. " I Grank Fleet’ when‘ cruising, and [also I undertake’ -long“. voyages. w'ithout.“ the‘. . gair of ‘’‘mother erl§.'ft..’.’ Many new} ' features were. embodied in this‘elass," :1 [which has proved itself 2; eonspicl_lojus~‘g 1' triumph of British engineering». Unlike ’ U other submarines, they are fitted .With~ [steam turbines which are used‘ during -operations at a ‘high speed on the tlsurface. %e_condary propelling power :3 is obtained from‘ «a heavy, oil engine ; ‘ "of 800 brake horse—poWer, which drives M f 1 3 dynamo SllDplying"electri’c'isty either ’ 1 to .electric. m-ctors geared to the propel’_>"'ler shafts (for surface ‘cruising. at ' moderate speeds) or to electric batter- ’ fies. which store energy for propulsion :1 under waiter. When _sLlblne;l-god, these !vessels have :54. displacement of 2570 '| tons. They are fi'ea.rly,34o feet long, i‘! and have a double hull, except at the i ends“ An exceptionallypowerful wireilless telegraph installation is fitted for 3' carried on long Itelescopic masts, opera- : ted by a telemotor system. Electricity ’iis also used for driving the air—c.omiipressors and bilge pumps, while the ’ steering gear and the hydroplane drivling gears are controlled by a special ' hydro-electric system.