The republic. [volume] (Washington [D.C.]) 1849-1853, 1853-01-11
PROPOSALS FOR DREpGE-BoATs.
w Ar DEPARrMENT
BUREAU CORPS ToPoeRAPHIoAL ENaIsEFRs.

| 49, WAR DEPARrMENr -
DAAAo CORPS TYPOGRAPHICAL ENGINEERS,
December 8, 1852.
ing the 10th day of next February, for the
construction of four steam dredgesb boats. TO be
worked by high pressure engines, viz:
One Tor Lake Champiain. to be delivered. in
apected, and received al White Hall Harbor, on
Lake ChampIain.
One for Lake Ontario, to be delivered, inspect
ed, and received at Oswego, on Lake Ontario
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 feet
beam, with guards feet wide, sufficient for buck
et-ladder and paddle wheels, to draw when
equipped not exceeding 8 feet of water
10 have two cylindrical boilers, made of the bes
boiler iron, one quarter of an inch in thickness,
each.
The working cylinders of the engine to be
WE'VE Inches diameter inside. not less than bali
an inch thickness of metal, and to have a lenoth
of stroke of four feet, with half cut. off
Each boat to have paddle wheels for locomo-
ton, with suitable accommoda zion for the officers
ano 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
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 yawi boat, ~ feet long, and with four good
oars, and also suitable yawl boat and GA rs 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 10
move not less than 100 miles in calm weather, on
the waters of each lake respectively, in conscious
I'VE hours, at rate of not less than six mile
the hour.
I'd. AS to dredging power. 1t will have to raise
and discharge into scows, of loose sand, 100 cubic
yards the hour; of loose mixture of CLAW and
sand, part sand and 2 parts clay, not less than
l00 cubic yards the hour; of pure clay, so cubic
me hopr; OF tenacious clay, and of sand and
gravel GU cubic yards the hour, from depth of
not less than III nor exceeding IL feet
Ihle must be the continued work of the boat
during ~ hours, and not an average during any
shorter time of work.
Each boat will havesto be supplied with an az
Choir of not less than 500 lbs and too kedge an
chors OF 200 lbs each; and with an adequate chain
cable of not less than 20 fathoms long, of iron.
lso z-inch hemp cable 100 fathoms long
The trials will be under pressure of steam for
dredging not exceeding so pounds the square
inch; for iocomotion not exceeding $50 pounds the
square inch.
The trials and inspeC ton to be made bv a Uni.
ted States agent.
The boats to be ready at the places stated by the
last day of May next. 7-1
Proposals will at the same time be received for
four dscharging scows for each dredge boat, each
scow to be provided with two good sweeps, and
with bottoms so arranged to discharge the whole
load at once. Each boat capable of holding not
ess than 40 tons Of excavated soil.
Proposals to be addressed TO the undersigned,
and marked on the envelope Proposals for
Dredge boat.'' alaa
. J. ]. ALERT, "-a
Col. Corps Top. Engineers.
The Republic, Intelgencer, and Union Wash
ngton; Courier and Enquirer, and Express New
York; Commercial Advertiser, Buffalo, N. Y;
advertiser, Detroit, Mich; Commercial Adver-
User. Chicago, ILL.,; Commercial Times, Oswego,
n. Y; Pittsburgh Gazette, Pittsburgh, Pa; Al.
oany Register, Albany, N. Y, will give the above
wenty daily insertions, then twice a week until
February 10. i