The daily union. [volume] (Washington [D.C.]) 1845-1857, 1854-04-25

She is supplied with eight boilers, having i've rurns
and at full speed which about u knots lo2
tons of coal per diem.
The boilers machinery take in the length Of hold
feet which nominal power of 600 horse considered
excessive.
The results the trial Of the Napoleon have sufficiently
established the fact Of the pracoaby Of adapting pro-
peer ship of the largest class to insure great speed
and form effective an-owar for certain purposes
and in certain situations but when the great weight Of the
engines and coal considered and great space they
necessarily occupy in the vessel Thereby diminishing the
stowage Of provisions and and when further reflect
that after the coal expended the ninety gun ship has only
the spsrs and sails Of G0gun ship to rely upon,
forced TO the conclusion that however useful such vessel
may be FOR short passages, and in those whore her sup
ply Of coal and provisions may be constantly repenshed yet
that her sphere Of action very limited and that she
could not be relied upon for the long cruises and various
vice which ordinary line OF battle ship is employed
ship constructed model of the Napoleon, for the
sake of gaining speed Of twelve knots per hour for
the distance Of about 24oo miles compelled to saorihce
great part Of her efficiency In several other most important
particulars.
In time war, at short distances port for the de
fence Of harbors and bays tho Florida channel and for
the general purpose Of defending coast to force blockade
for the speedy transport Of troops to adjacent territory
such vessel would undoubtedly be most valuable acquis
ton TO navy but her employment must necessarily DO
confined to such situations and circumsancess for should
she be unlucky enough fall in with hostile squad
ron, with her coal expended, with her machinery
rendered useless by the accidents which
machinery constantly exposed with her compare
lively light rig and her want Of stability the consequence Of
losing SO great weight Of coal, she would prove
ANYTHING but formidable antagonist and II Is much be
feared that would be compelled strike any vessel
her class that should attack her.
In France and England the question Of adapting propeers
their owsr already existing particularly TO neof
battle ships has excited the deepest interest and has been
discussed in all its bearings In both countries great
been made ascertain how this adaptation could be
effected at the least expense without injury to the sailing
qualities snd capacities Of the shp and 70 discover the best
general plan for the necessary alterations.
Acr series OF the careful trials, made at the
station Of Rochefor il found that there nsurmount
able objections to placing engine Of $50 horse
board hundred gun ship then determined try the
experiment with the Austertz shpo the line Of the same
class then the stocks Cherbourg but after the maurest
confederation the and engineers compelled
decide that could be done unde any reasonable
During visit 10 the dock Yards, understood that
dsrs had been given complete screvhip La Breagns
DE Tursnne, lie Tonrvle, lie Duquesns and four other
first Glars ships, then the stocks.