The republic. [volume] (Washington [D.C.]) 1849-1853, 1853-02-10
PROPOSALS FOR DREDGE-BoATs.
" Ar DEPARTMENT.

T. War DEPARTMENT.,
BUREAU CORPS ToPoeRA PHIcAL ENeINEERs.
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 by high pressure engines, viz:
One for Lake Champlain, to be delivered in
spected, and received at White Hall Harbor, On
Lake Champlain., Ni'
One for Lake Ontario, to be delivered. iuspect.
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.
Inc hull OF each boat to be ITO feet long 80 feet
BEAM with guards feet wide sufficient for buck
et-ladder and paddle wheels, to draw when
equipped not exceeding 8 feet of water
TO have two cylindrical boilers made of the best
boiler iron, one quarter of inch in thickness.
each. - - -
The working cylinders of the engine to be
twelve inches diameter inside. not less than half
an inch thickness of metal, and to have a Iength
of stroke of four feet, with half stroke cut off
Each boat to have paddle wheels for locomo-
tion, 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 contract, nor will
a boat be received or paid for until after it has
been inspected and tried, and found to meet the
terms of contract
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
engagements, materials, and equipment and will
be subject to the following trial:
LIST. 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 rate of not less than six mile
the hour.
h,t H. J~,.-
and discharge into scows, of loose sand, 100 cubic
yards the hour; of loose mixture of clay and
sand, part sand and 2 parts clay, not less than
100 cubic yards the hour; of pure clay, so cubic
yards the hour; of tenacious clay, and of sand and
gravel, go cubic yards the hour. from depth of
not less than 10 MOI, exceeding IL feet
This must be the continued work of the boat
during 10 hours, and not an average during any
shorter time of work.
6 Each boat will have to be supplied with an al
Choir of not less than 800 lbs, and too kedge ali
chors OF 2O0 lbs. each; and with an adequate chain
cable of not less than 10 fathoms long, of IRON
Also a inch hemp cable 100 fathoms long.
The trials will be under a pressure of steam for
dredging not exceeding 80 pounds the square
inch; for iocomotion 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 discharging 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 20 tons of excavated SOIL
Proposals to be addressedrto the undersigned,
and marked on the envelope Proposals for
Dredge- boat"
]. ]. ALBERT,
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 a week until
February 10.