The Sun.
London, England, 1863-04-28 00:00:00

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Another trial, of a highly inter: sting 0./i,3raelat
to naval men and artillerists, took pla,:e on Satur-
day between the Nore and Mouse lightskipF• Thi'
Hebe is the third vessel on this'principle lies
been built and engined by Messrs. Dudgeon', of
tnt
hwoatore e
odt
fh, e
tahFneldo retaihnaegnd h
l over
ea advantages areen
wtKi.
the Isle of Dogs. The performances of the first
hate—have been already
manifested during a series of fr eo fmathreoe againt7:
vviss.
ett
sre imkwhich
s. T
made after the thHeehtreiails ofa an iron
vessel
leeonf
4t7hoe
lwigehre tship
tong, long, 22ft. Gin. beam, 13ft. Gin. deep,
ha
ving a deck house 71t, high
fidexut
penwdiintgh aboutand
three-fourths of her length,
,saloons. Draught of water at time of trial, sfr.
forward and 91t aft. Being without dead weight
to give her sufficient immersion, the weed was
under considerable disadvantages, especially es
there was a strong wind blowing, which roe
retarded these evolutions which formed (lie principal
feature of interest to most present. Tice screws we re
three bladed, 71t. Gin. in diameter, wills lOft. pitch,
worked by two separate and independent engines,
2ha.viinieli stroke
geaciltwo cylinders 21in. in diameter, with
6of pistons, and 120 c.)llective nominal
horse power. The revolutions at the time of trial
between the lightships were 110. The time occu-
piedmin. 15sec., the distance being 8 statute milts.
between the Mouse and Nore lightships was 33
Among the evolutions performed for the satisfaction
of the scientific gentlemen present were the follow-
ing :-1. Full speed ahead, both screws, helm hard
astarboard ; circle completed in 4 min. 2.
Full speed ahead, both screws, helm hard
aport; 3min. 40see. 3. Helm astarboard, with port
screw stopped ; circle completed in 3min. 9see. 4.
Circle made the reverse way by putting the helm
sport and with starboard screw stopped, in 3min.
38sec. 5. Helm hard aport, the screws being turned
in opposite directions, the vessel pivotted on her
centre in 3min. 52sec. 6. A second experiment the
reverse way was made in 4min. lOsec., the mean
time of these last two revolutions being 4tnin. lsec.
7. Helm atnidship, the screws working in opposite
directions; the circle was completed in Imiu. 58sec.
The engines varied alternately in these trials from
90 to 103 revolutions per minute. As before men-
tioned, during these experiments a fresh wind pie-
veiled, which materially retarded the turning, the
vessel being light, and consequently exposing a
large area to the wind. The engines worked ad-
mirably throughout, the boilers giving an abundance
of steam, and the whole of the arrangements were
excellent, reflecting great credit on the builders.
Among the numerous scientific gentlemen present
wets Sir .1. D. Elphinstone, M.l'., Admiral Sir
Edward Belcher, C. 8., Sir J. Lawrence, Captains
Jones and Howes, RN., Commander T. E. Sy-
month, RN., Colonel Paradis, Imperial Austrian
service, Mesas. W. Ellice, E. Gellatly, F. Sewell,
Abbots, Dunbar, 0. Dingier, Imperial Austrian
service, V. Smith, C.E., Zerah Colburn,
C.E., Kitson, C.E., and a large party of scientific
and commercial gentlemen connected with the com-
mercial marine, who were unanimous in their ex-
mances they had witnessed.
pressions of satisfaction at the admirable perfor-

WSRIPER

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