The republic. [volume] (Washington [D.C.]) 1849-1853, 1852-12-18
PROPOSALS FOR DREDGE-BOATs.
NAR DEPARTMENT.
BUREAU CoRPs ToPoa n PHicAL EsGIsEERs,

| WAR DEPARTMENT.
| BUREAU CoRPs ToPooRAPHIcAL EsGIsEERs
| ... December 3, 1852
| PROPOSALS will be received until and inciud.
| l. 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 ChampIain, to be delivered, in.
| spected, and received at White Hall Ilarbor,
Lake CbampIain. a..
One for Lake Ontario, to be delivered, inspect.
cd, and received at Oswego, on Lake Ontario.
One for Lake Erie, to be delivered, inspected.
and rec eived 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 feet Of water.
Ioh have two cylindrical boilers, made of the bes
boiler iron, one quarter of an inch in thickness,
twenty. two feet long, and forty inches in diameter
each .
The working cylinders of the engine to be
| twelve inches diameter inside, NOT less than half
| a inch thickness Of metal, and to have length
OF stroke Of four feet with hall. stroke cut. off,
Each boat to have paddle wheels for locomo-
ton, with suitable accommodation for the oficers
and hands required to maB9uvre 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 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 good four
cared ya~ boat, % feet long, and with tour good
oars, and also a suitable yaWl- 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.
lst As to locomotive power. Il will have to
move not less than 100 miles in calm weather, on
the waters of each lake respectively, in consecu-
| tive hours, at rate Of not lees than six miles
| the hour. .r
I'd. As to dredging power. 1t 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
yards the hour; of tenacious clay, and of sand and
| gravel, so cubic yards the hour, from depth OF
not L iess than 10 nor exceeding u feet. !,
This must be the continued work Of the boat
| during lU hours, md not an average during any
| shorter tine of work.
Each boat will have to be supplied with an an.
Choir of not less than 800 lbs. and too kedge an.
cbors 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 iocomotion not exceeding $50 pounds the
| square inch. -s....-..- ..., - .4.. s&
! The trials and inspection to be made by Uni
The boats to be ready at the places stated by the
| last day of May next. . ..- r. -.. .',.r
| Proposals will at the same time be received for
scow to be provided with two good sweeps, and
with bottoms go arranged as to discharge the whole
| load at once. Each boat capable of holding not
| LEES than 40 tons OF excavated soil.
Proposals to be addressed to the undersigned.
| and marked on the envelope Proposals for
Dredge boat"
| J. J. ALERT,
| Col. Corps Top. Engineers,
| The Republic, ntelligencer, 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. .. ...-. .a.a~.. .ss .....
| Dec 9-d20t& 2awtFebl0 ....t.., ... -.