, 1880-11-27
THE LIVADlA,
Impcnllns Revolution In the IRu1fd Of
ateamshlps-Trecdonl from Pitching
mud IkotJlnE.

Impcndlng Revolution In the Isu1fd Of
atcan,shlps-Frocdon from Pitching
aud Rolling.
london Mature. Hop. II.
In Nature, vol. xii, p. 40, We gays MI
account OF this remarkable ship, and stated
thAt we should report the results OF her trlnls
TO our readers. HVo there sntu "it cannot be
knots,n ard we pretty nlainly !ntInsatcd that!t
would, in our Judgment, fall substantially
short Of seventeen knots; In point OF fact 1t
Inns fallen between these limits, und nearer
tho higher than tho lownr, tho average mean
speed at tho measured distance being 15,s}l
knots. The average of tho several runs,
Which hayo not previously been published In
London, nro as follows:
Number nf runs, 0.
indicator horse -pnwer, 1851
Speed IL knots. 15ts:as5.
rIetl. tho vessel going down the rlyor on n
wednesday, making u preliminary ru,, u,,dur
steam on thp following day, Thursday; on
Friday sAc saads q run at fult speed for six
hours, giving MI average Of tlfteon knots;
mud on Saturday she, made her measured
mile trials. Those who understand tho con-
dltlons under which these stcn,n trials wore
matle will see ut once That It WIS not possible
to obtatn tho best results with Il ship thus
put under steain day after lay, l,er boiler
tubes Cutting doubtless rnorg or less foul,
md l.er machinery also falling somewhat
out Of perfect condition, especially whero
thora wero tlirso separate sets OF engines to
10 cured for. The bottom wns nls0 foul from
haylnE been three months in tie YET ioek at
Lisatia as aho ls can bn driven ut over ak
teen knots eighteen mflcs) under fair con-
tlltlnns, without any alteration whatever.
1t ls highly probablo that some i,nproye-
Yncnts n!ght by nude In tho screw prupel-,
lers, rs It Is nut to bo exptcted that tic best
conditions wefe secured at the INST ntteinpt.
In fact, wo have evltlus!ce that the central
| OF tl.e gltle-serows, and runs q af!i1areas
speed; 1t now onpears likely tl,nt The pitch
SHOULD have be1n the sant N It'll cases, and
when the opportunity oilers thEs cllanga will
pthor slight lno.llIleatlons will doubtless also
| le tried, nnd those Ut our own naval archi~
| tec(s, who l'aye. wVll cUnsderod a!l lhe facts,
lays formed tho oplniGn tl!at Il nll minor
| allca ARG removed, q spetA approaching SOY.
| III tho ldvad!n. II 1leetts Nu words OF ours
TO conyl',ee the sclontillo world that whother
this vessel or not tha l&i!ssEan Government
llas rendered q Yast service to naval science
! by ttcllloNstratinK on large scale, alltl IN 4.
RNio a. ;,mes.onan ,ss' 9tla }aner n ne taet
[ whose tangth IL but one aud q flaif ttnlus
her breadth, may with, ITO very inortluato
expenditure OF power be nlala to take u
hiks! ps,9 piage among tho low fastest Ships In
hit tic Interest, IN the, LIyadla, while II Is
greatnst ns regards her hlRll-spe0tl trials, by
ilu ,leans ends therc. 1ler steAn!ng per
fnrnlancus with diminished ste9m power tlro
also very Interesting. ln considering these
the render should remember that IN tlils case,
| As " all .cAses Ut faat alllps Kalng With H.
uueed power anu at reduced speeii, tllv per-
| {0rnallces aru subject 10 q double Alsudya,-
tag4: first, tho srcluht Ut tia nluchinery cat-
ell to produce the reduced power; and sec.
oldly, the friction and other Losses aro like
wise In corresponding excess. F0r exnMptu,
| when tho I.lyadla IL stealtllnE at eleven to
twuvs Knots, sllo ls employing less
power than aI!y one Of her threo sets
Of engines produces; asnl II ,she llat not
dispense with the other two sets OF engines
AMI boilers anil thus ba relieved OF nearly