The Liverpool Standard and General Commercial Advertiser.
Liverpool, Merseyside, England, 1846-11-03 00:00:00

EMERALD AUXILIARY SCREW STEAMER.

(From the Steam Navigation Gazette.)
We have much pleasure in giving our readers the extract
from a letter by Captain Prichard to Lieut. Sarsfield, R.N.,
the intelligent Marine Manager of the City of Dublin
Company : _

" Belfast, Oct. 15, 1846

" This is to inform you of our safe arrival in this port
from London, after a passage of four days and three hours.
The first thirty hours we had a strong breeze from the
west ; after, for five or six hours, the wind was flying
about to the south-west, until we got to the Isle of Wight.
We then got the wind to the northward, which carried us
to the Lizards, after this little or no wind ; but at ten
that evening it came on like a hurricane from the westward
to the north-west and round to the southward, and then
came a-head. There were two screw-boats which had
left London, one twenty-four hours before us, for Lim-
erick, and we passed her off the North Forelands. The
other left thirty hours before us—we passed her off the
Isle of Wight. The Pearl—(built by Ditchbourne and
Mare,—engines by Maudslay and Field)—left the same
day from Southampton that we left London; we spoke
her off the Land's End, and arrived here seven hours
before her. Close haul'd we beat them the most; we
went to windward more than any we tried with ; we acted
well both with the wind a-head and fair, and did not
labour in the least—were quite dry, and ran much better
than I expected."
We wish particularly to draw attention to this account
in consequence of the Emerald being the first of several
vessels of various sizes, built at Liverpool, with auxiliary
steam power, having Mr. Grantham's pateiAt arrange-
ments, by which all spur wheels and multiplying gear are
removed, and the engines applied direct to the screw shaft
as in paddle-wheel steamers : thus obviating one of the
greatest objections ,to the screw propeller. The vessel
was also modelled by Mr. Grantham. Besides t'.o fact
of the Emerald's great superiority over the other three
screw vessels, as stated in Captain Pritchard's
would notice a still more important circumstance.
The speed of the Emerald has been about equal to the
coasting paddle-wheel steamers. These average about
700 tons measurement, and 250 horse power,• and cost
about £28,000. They carry about 200 tons dead weight,
besides their coals, burn from 80 to 100 tons per voyage
of the same distance. On the other hand, the Emerald
can take from 200 to 300 tons cargo, burns about 25 tons
of coals, and has cost under £9OOO.
We shall wait with much interest for the result of the
Sarah Sands, a vessel of 1000 tons, now building under
Mr. Grantham's directions, and fitted on the same prin-
ciple. letter,

PREMIUMS OF INSURANCE.

1 Outward

Jamaica
Leewaid Isl. Dem. & Berbie 20 0 0 9 20 0 —3O 0
Honduras SO 0 60 0 sa 0 —6o •
Havana 35 0 40 0 33 11 —44 •
New York, Boston 2O 0 25 0 15 0
Charleston, Savannah
New Orleans
Canada
Brazils
BritishuNnoariatnndAmerica )
rievvfo

:•• • • 25 0 -
..... 25 0 -

• 0 1 20 0 - 25 •
• • 25 • - • 0-

River Plate
East Indies
China
Batavia
New South
Hope
Afr
Lima, Valparaiso, &c.
Malta, Sicily, &c.
Smyrna and Constantinople
Malaga
Madeira
Western I slcs,Cape de Vends
Lisbon
Cadiz
Capeeva
Gibraltar oft

. 30 0 -35 0 3O 0 - (WO
. 35 0- 40 fl 35 0- 40 0
. 50 0- 60 (1 , 60 0- 0 0
30 0- 35 0 35 0- 0
. 35 0-40 0 48 0- --
. 35 0-40 0 40 0-
30 0- 105 0 -
. 15 0- 17 6 17 6- 20 0
. SO 0- 60 0 40 0- 50 0
. 17 6-- 20 0 17 6- 30 0
30 0-40 0 r 40 0- 0 0
. 17 6-20 0 17 6-20 0
▪ 15 0-20 0 15 0-20 0

20 0- 25 0 17 6- 20 0
17 6 - - 17 6- 20 0
20 0 - - 20 0- 25 0
O 0- 0 0 20 0 -
O 0- 0 0' 0 0-
O 0 - 0 0 - -
O - 0 0
9 0 0 0 •••• "'""•

France
Holland
Hamburg, Bremen, &c.
iottenburg, Stockholm
Petersburg, Riga, &c.
Oporto •• •• •