The republic. [volume] (Washington [D.C.]) 1849-1853, 1853-01-04
PROPOSALS FOR DnEDcr-noAr..
WAR DEPARTMENT,
BUREAU CoRPs ToPoeRApHIcAL EsorsErRs.

WAR DEPARTMENT
BUREAU CORPS TopoeRAPHIcAL EsaINExRs,
December 8, 1852.
PROPOSALS will be received until and inoI,d.
L ing the 10th day of next February, for the
construction of four steam dredge. boats 10 be
WORKED by high pressure engines, viz:
One for Lake Champlain, TO be delivered, in
spected, and received at White Hall Harbor, on
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. in
spected, and received at Chicago, Illinois
The hull of each boat to be ITO feet long. 80 fee
beam, with guards feet 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
oolier iron, one quarter of an inch in thickness,
twenty-five feet long, and forty inches in diameter
each.
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 Iocomo-
ton, with suitable accommodation for the officers
and hands required to maneuvre and work the
ooat, say captain, mate, pilot, engineer, and
twelve bands; also suitably constructed coal
bunkers for about fifty tons of coal
No advance will be made on a contract, nor will
boat be received or paid for until after it has
been inspected and tried, and found to meet the
Each boat will be supplied with a good four
Dared yawl boat, 20 feet long, and with four good
oars, and also suitable yawI. boat and oars for
assisting in weighing anchor.
The boat will be inspected in reference to ar
engagements, materials and equipment, and will
be subject to the following trial:
LIST. AS to locomotive power. II will have to
move not less than 100 miles in calm weather on
the waters OF each lake respectively, in coosecu-
tive hours, at rate of not less than six miles
the hour.
I'd. As to dredging power. u will have TO raise
and discharge into tcows, of loose sand 100 cubic
sand, part sand and parts clay, not less than
ioo cubic yards the hour; Of pure clay. so cubic
yards the hour; of tenacious clay and of sand and
gravel, 60 cubic yards the hour, from depth of
not less than 10 nor exceeding ~ feet.
This must be the continued work of the bost
during 10 hours, and not an average during any
shorter time of work
Each boat will have to be supplied with an a.
Choir OF not less than 500 lbs and too kedge am
chors OF 200 lbs. each; and with adequate chain
cable of not less than 10 fathoms long, of iron.
ALSO Il inch hemp cable 100 fathoms long
The trials will be under pressure of steam for
inch; for locomotion not exceeding $50 pounds the
square inch.
The trials and inspection to be made by a Uni
ted States agent.
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
four dischargng scows for each dredge- boat, each
scow to be provided with two good sweeps, and
with bottoms 80 arranged as 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.''
]. ]. 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, ILL.,; Commercial Times, Oswego,
N. Y; Pittsburgh Gazette, Pittsburgh, Pa; Al
bany Register, Albany, N. Y, will give the above
twenty daily insertions, then twice week until
February 10.
Dec 9-d20t &2awtFeb sa