The republic. [volume] (Washington [D.C.]) 1849-1853, 1853-01-22
PROPOSALS FOR pREDGE-BoATs.
War DEPARTMENT,
BUREAU CoRPs ToPoaRA PHIcAL ENaINEERs,

War DEPARrMsNr,
BUREAU CORPS ToPoaRAPHIcAL ENaINsERs,
nal g.g5 81 dir December s, 1852.
| PROPOSALS will be received until and includ.
4 ing the 10Th day of next February, for the
construction of four steam ,dredge- boats, to be
WORKED oy nigh pressure engines, viz:
One Tor Lake Champlain, to be delivered, in
spected, and received at White Hall Harbor, on
Lake Champlain.
One for Lake Ontario, to be delivered, inspect.
ed. and received at Oswego, on. Lake Ontario.
One for Lake Erie, to be delivered, inspected
and received at Erie, on Lake Erie.
One for Lake Michigan, to be delivered, i'm
spected, and received at Chicago, illinois,
The hull of each boat to be ITO feet long, 80 feet
beam, with guards fleet wide, sufficient for buck
et-ladder and paddle-wheels, to draw when
equipped not exceeding feet of water
To have two cylindrical boilers, made of the bes
boiler iron, one quarter of an inch in thickness
feet long, and forty inches in diameter
The working cylinders of the engine to be
twelve inches diameter inside. not less than hal
an inch thickness of metal and to have length
OF stroke of four feet, with half stroke cut. off
Each boat to have paddle wheels for locomo-
ton, with suitable accommodation for the officers
and hands required to maneuvre and work the
boat, say captain, mate, pilot, engineer, and
twelve hands; also suitably constructed coal.
bunkers for about fifty tons of coal.
No advance will be made on contract nor will
boat be received or paid for until after it has
been inspected and tried, and found to meet the
terms of contract. TFa4r g
Each boat will be supplied with good four
Dared yawl boat, % feet long, and with four good
oars, and also suitable yawl. boat and oars for
assisting in weighing anchor.
Inc boat will be inspected in reference to ar
rangements, materials, and equipment and will
be subject to the following trial:
ISL. AS to locomotive power. 1t will have to
move not less than 100 miles in calm weather, on
the waters of each lake respectively, in conscious
tive hours, at a rate of not less than six mile
the hour.
"a. AS to dredging power. It will have to raise
and discharge into scows of loose sand 100 cubic
yards the hour; of a loose mixture of clay and
sand, part sand and parts clay. not less than
lOO cubic yards the hour; of pure clay, so cubic
yards the hours of tenacious clay, and of sand and
gravel, 60 cubic yards the hour, from depth of
not less than 10 nor exceeding u feet
This must be the continued work of the boat
during 10 hours, and not an average during any
shorter time of work.
Each boat will have to be supplied with an al :
chor OF not less than 800 lbs, and too kedge aL-
chors of 200 lbs each; and with an ADEQUATE chain
cable of not less than 10 fathoms long, of iron
Also a a Inch hemp cable 100 fathoms long
Inc trials Will be under pressure of steam for
dredging not exceeding go pounds the square
inch; for iocomotion not exceeding $50 pounds the
The trials and inspection to be made by Uni
| ted States agent. f ga ~
The boats to be ready at the places stated by the
last day of May next.
Proposals will at the same time be received for
Jour discharging scows for each dredge- boat, each
scow to be provided with two good sweeps, and
with bottoms 30 arranged to discharge the whole
load at once. Each boat capable of holding not
less than 40 tons of excavated soil
Proposals to be addressed to the undersigned,
and marked on the envelope Proposals for
Dredge; boat"
t3@ as J. j. ALERT,
Col. Corps Top. Engineers
The Republic, Intelligencer, and Union, Wash
ington; Courier and Enquirer, and Express, New
York; Commercial Advertiser, Buffalo, n. Y;
Advertiser, Detroit, Mich; Commercial Adver-
tiser. Chicago, H.; Commercial Times, Oswego,
Ny; Pittsburgh Gazette, Pittsburgh, Pa; Al.
bany Register, Albany, N. Y, will give the above
twenty daily insertions, then twice week until
February 10. ~ ;5tssH
Dec 9-d20t& 2awtFe bl0