The republic. [volume] (Washington [D.C.]) 1849-1853, 1853-01-17
PROPOSALS FOR DREpGE-BoArs.
" Ar DEPARTMENr, nh go
BUREAU CORPS ToPoe IA pHIcAI ENerNreps

War DEPARTMENr A ~
BUREAU CORPS ToPoe ApHIcAI ENGINEeRs. m
4 s. December s, 1852.
4 PROPOSALS will be received until ard incI,,d
/ ing the 10Th day of next February, for the
construction of four steam dredge boats. To he
worked by high pressure engines, viz: So 81
One for Lake Champlain. to be delivered. in
apected, and received at White Hall Hartor on
Lake ChampIain. ~ u -
| 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 10 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. ELE
To 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. - 49,
The working cylinders of the engine to be
twelve inches diameter inside, not less than hal
an inch thickness of metal, and to have a 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
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. .
Each boat will be supplied with good four
Dared yawl boat, ~ 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. 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.
40 IN dro1 oipr u
and discharge into scows, of loose sand, 100 cubic
yards the hour; of loose mixture of clay and
sand, part sand and parts clay, not less than
loO cubic yards the hour; of pure clay. 80 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 IL feet -"
This must be the continued work of the boat
shorter time of work.
Each boat will have to be supplied with an al =
Choir of not less than 800 lbs, and too kedge air
chors OF 200 lbs each; and with 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 pressure of steam for
dredging not exceeding go pounds the square
inch; for locomotion not exceeding $50 pounds the
The trials and inspection to be made by Uni
ted States agent. 80
The boats to be ready at the places stated by the
last day of May next. T..
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 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'' " 70 20
]. ]. ALBERT,
Col. Corps Top. Engineers.
The Republic, lntelgencer, and Union, Wash
ington; Courier and Enquirer, and Express New
York; Commercial Advertiser, Buffalo, NJ 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. ..tta 't-1H31-
Dec 9-d20t 2awtFeb1O tDa r. Ie#