The Sun.
London, England, 1842-02-23 00:00:00

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.• Ak.vi :
LONDON, WEDNESDAY- r S FEBRUARY 23, 1842
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WOOLWICH-TIJESDAY-3-
EXPERIMENTA L TRIP WITH THE EAST INDIA CO11!]1NIY'•
STEAM-FRIGATE. MEMNON. —Yesterday merising, at a iiarte
past nine o'clock A. Si., this splendid vessel of 1,100 tons burden,
mounting two 64-pounders, and four 32-pounder guns, and
having them and all her shot on board, with about 300 tons of
coals and a heavy cargo, sufficient to test her capabilities for a
long voyage, was loosed from her moorings at Blackwall, and pro-
ceeded down the river in excellent style, for the purpose of as-
certaining the efficiency of her engines and sailing qualities.
The Memnon was built by Mr. Fletcher in a superior manner,
and the engines, of 400-horse power, were constructed by
Messrs. Maudslay, Sons, and Field, on their patent principle,
with copper boilers and change-water apparatus, which keeps
the salt water below a certain point, and by that means pre-
vents any deposit taking place; so that a vessel might pro-
ceed on a voyage to India without incrustation to the
extent of the thickness of a sixpenny piece. The cy-
linders are double, on the expansion principle, and the
consumption of fuel can be admirably regulated to
suit any circumstance of slow or quick sailing, and
disconnecting gear to work one wheel without the other,
if found necessary. On arriving at Long Reach, the
full power of the steam was applied, and the endues
worked with a beautiful motion, the vibration being scarcely
perceptible. The large wheals, 26 feet in diameter, entered
the water with such effect as to propel the vessel, with her
heavy cargo, at the rate of 111 miles per hour, affording the
greatest satisfaction to her commander, Captain Powell, and
all the gentlemen present, among whom were Captain Pepper,
of the Akbar, another vessel of the same dimensions, belonging
to the East India Company; Captain Braco, attached to the•
Neapolitan Government; Mr. Fletcher, Mr. Maudslay, sen.„
Mr. Maudslay, jun., Mr. Field, and several scientific persons.
The Memnon proceeded as far as Sheerness before returning,
and the manner and simplicity with which the disconnecting,
gear removed the stupendous paddle-wheel and again attached
it in an almost incredibly short space of time, surprised the
naval officers, who had never witnessed anl thing of the kind
before. On the return of the vessel the company sat down to
a cold collation ; and Captain Powell, after proposing the
health of the Queen, gave " The Directors of the East India
Company," and extolled them as being the best and most
liberal masters to all who had the honour of serving them. He
felt proud of the honour of commanding such a fine vessel as
the Memnon had proved herself to be that day, and he was
confident she would give every satisfaction, and reflect great.
credit on the gentlemen who built her, and the firm that fitted_
her engines.

Tlaelord! Commissioners of the Admiralty, with the view
of satisfyntg them elves and the service generally of the dad_
eney and comparative strength of the chains and anchor& used.
in her Majesty's navy, ordered one of the best and largest
anchors, weighing 93ewt. 3qrs. and slbs., suitable for a first—
rate ship of war, made at Woolwich Dockyard on Perring'a
principle, to be attached to a chain 2i inches in diameter, the
usual dimensions, aid have both tested by Bramah's hydraulic
machine, constructed for that purpose.
Thursday being the day at first named for the proofs be iv
made, Rear-Admiral Sir James Gordon, K.C.8., Lieutenant_
Governor of Greenwich Hospital, arrived at the Wouiwrch
Dockyard, and a great number of naval officers, celebrated.
engineers, and scientific men, from various parts of the country,.
attended ; but owing to the non-arrival of some of the Lords of
the Admiralty, who were expected to be present, the testily,
was postponed until yesterday afternoon, when their Lord-
ships' other duties still preventing them from being presesit,
the experiment was made in the presence of Captain Sir Fratseis:
A. Collier, Knt., C. B. and K. C. H., Superintendent of the
Royal Dockyard ; Captain Alingaye, Captain Rideout, Capt..
Denison, Captain Denitatn, Commander Tresahar, Lieutenant.
Lawrence, and a number of officers of the Royal Navy.
Amongst the military officers present were Lieutenant-Col..
Dundas, C. 8., Lieutenant •Col. Sabine, and Lieutenant-Col.
Chalmer, of the Royal Artillery, and Captains Blythe and
Herrick of the line.

Amongst the engineers were Mr. Howard, Cornhill ; Mr.
Bremner, Edinburgh ; Mr. Thompson, Glasgow ; and Mr.
Seeward, Limebouse. Mr. Oliver Lang, Woolwich ; Mr.
John Fincham, Chatham; Mr. J. Atkins. Sheerness; Mr.
T. F. Hamkev, Plymouth ; Mr. R. Blake, Portsmouth; and.
Mr. Roberts, late of Devonport Dockyard, forming the Com—
mittee of Master Shipwrights, appointed by the Lord Com—
missioners of the Admiralty to examine suggestions for the im—
provement of vessels employed in her Majesty's service, were
also present, and a ',umber of private gentlemen, apparently
anxious to know the result.

On the order being given and the power applied, Mr.
Ewart, Chief Engineer of the Woolwich dockyard, ex-mined.
the progress of the strain, and found that, with a weight of
sixty tons, the point of the fluke had been drawn forward a
space of two inches and three quarters from its usual position
with the ring end of the shank. At this period of the experi—
ment the hydraulic pressure was withdrawn, the anchor
having been found incapab!e for the service for which it
was intended, as it ought not to have yielded so much with
a power of 66i tons, the full weight it would have to resist
before it could have been passed as perfect. Capt. Sir F. A.
Collier ordered that the power should be again applied, to as—
certain the utmost strain the anchor or the chain would boar
before breaking ; and when'the full pressure of 66/ tons was
put on, the anchor was found to have yieled 4i inches from the
point of the fluke to the ring-end of the shank, and the mo—
ment the strain was equal to 68 tens, or 14 tons above the
proof, the shank broke completely through, and the parts en—
tirely separated from each other, at about eighteen inches from
the fluke end.

The usual test for 1112 chain of an anchor of 96 cwt. is Blf
tons, consequently the chain had not the full power upon it,
and did not appear to be in the least strained ; but it will, on
a future occasion, have the full power applied to it to ascertain
its capabilities. It was intenneci to have tested one of Porter's
patent anchors of 29 cwt., whirls Mr. Honiball, the patentee,
felt confident would bear an equal strain before breaking as the
large anchor of 96 cwt.; but the time requisite to remove such
a heavy mass of iron as the broken anchor, end the breaking
of a small portion of the stretching frame, caused the trial to
be postponed unt:l the middle of next week.