The republic. [volume] (Washington [D.C.]) 1849-1853, 1853-02-25
PROPOSALS FOR A DREDGE, TUG-BOAT,
AND SCOWS.
ENGINEER DEPARTMENT,


WASHINGTON, February II, 1858.
SEALED PROPOSALS will be received until
- 10th March, 1858, for the construction and de-
livery at Charleston, South Carolina, of one two
steam dredging machines, tug-boat and four
scows
The steam d. edge or dredges to be capable of
raising and delivering into scows at least two hun
dred cubic yards hourly; they will be required to
work in open sea-way, the material to be
dredged is sand and sand and shells mixed. The
hull of the dredge must be built of the best mate
rials and in the most substantial manner and COW
cred to the water line with II or Bremen zinc.
The engines must be so arranged that they can be
applied to propelling the dredge to and from the
bar upon which it is to work.
The depth of water in which the work is to be
performed varies from 2 to IA feet at low water;
the tide rises feet, making the greatest depth 20
feet.
There must be suitable sleeping and other neces-
sary accommodations provided for twelve men,
rooms coal bunkers capable of holding TWEEN
ty tons and a smiths forge.
The vessels must be delivered fully equipped
and provided with every thing~necessary to work
it to the best effect. Should the amount required
to be raised daily, as stated above, exceed the ca
pacity of dredge then offers for one dredge OF
half the above specified capacity, and also for two
dredges, each of half the above specified capacity,
will be received.
Also, one steam-tug, one hundred and twenty.
five feet keel twenty one feet beam, not to draw
over six feet six inches, with provisions and TWEEN.
ty tons of coal on board; to be coppered and cop
datons for the persons required to work her. being
eight in number; her timbers to be white oak,
live oak, cedar, locust, framed with the grain;
her plank the best Southern pine; workmanship to
be done in the most substantial manner; the hull
and upper works to be painted three-coat work.
To have two low pressure engines of thirty horse
power each, so arranged as to be capable of being
quickly reversed, and when running the same
way to move without strain. The tug is to be COM
pletely found in ground tackle and all equipage OF
every description whatever necessary to fit her for
the business of towing.
Also, four dumping scows, fifty feet in length by
sixteen in width, having wells thirty-six feet by
eleven at top, the opening at the bottom two feet
wide, and closed with two valves; a windlass for
closing the valves; bits at the bow and stern of six
by six-inch white oak, securely stepped; to be
planked with the best three-inch southern pine;
the frame to be of oak, cedar, or locust, and Sc
curely fastened and kneed; combing around the
well one foot in height and four inches in thick
ness, securely fastened to the deck; the bottom,
sides, ends, and we'll to be zinced to the height
Of light-water mark.
The price of each dredge, of the tug, and of each
must be separately stated.
The proposed time of delivery of the dredge
scoWs, and tug-boat at Charleston, s. c., must be
stated, and when so delivered they must be ready
for inspection and trial by the officer of engineers,
or such other agent of the Government as may be
appointed for that purpose. They must be carried
the bar which 1t is designed to operate at the
entrance of Charleston harbor, and there at the
contractors expense tested as to their perform
tory and in conformity with the conditions of the
contract.
No payment will be made on account of the
dredge, tug, or scows, until the whole shall have
been delivered, inspected, tested, as above pre-
scribed, and received; when the contractor will be
paid in full.
Parties offering to contract for this dredge and
its equipment will state distinctly what princi-
pie they propose to construct the machine; if pat
ented, the name Of the patentee; whether similar
machine has been built and subjected to trial; and
if So where and under What circumstances; givn q
the character of the dredged matter and the depth
of water from which it was raised; naming the
persons to whom reference can be had in regard TO
the The dimensions of the hull of the dredge
should be given, with the details of construction;
also the powerof the engine for driving the ma
cbinery of the dredge, expressed in number of
horses nd also in the diameter of the cylinder and
length of stroke of the piston and the pressure of
the steam under which the engine is ordinarily
worked
If practicable, drawings should be forwarded Of
the dredge complete, and also of the dumping
scows,
Further particulars may be obtained by CORE
spending with Captain A. H. Bowman, Corps of
En- gineers, Charleston, s. C.
The proposals to be addressed to the undersgn-
ed, and marked on the envelope, Proposals for
steam dredging machine, &C., for the bar at the
entrance ofCharleston harbor, S. CO.
JOS. G. TOTEM,