The republic. [volume] (Washington [D.C.]) 1849-1853, 1853-01-08
PROPOSALS ron DREpeE-BoArs.
War DrrARrmKsr.

&c PROPOSALS FOR DREDGE-BOATs.
Wan DEpARTMKsr.
poAhAu CORPS TYPOGRAPHICAL ENGINEERS,
i - asslss.74 December s, 1852.
| PROPOSALS will be received until and inolud
4 ing the 10Th day of next February, for the
construction of four steam dredge-bo ats 10 he
WORKED nas by high pressure pressure engines viz:
One Tor Lake Champlain, to be delivered in
spected, and received al White Hall Harbor,
Lake Champlain.
One for Lake Ontario, to be delivered, ipspec,
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 boatto be no 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 best
boiler iron, one quarter of an inch in thickness,
each.
4 The working cylinders of the engine 10 be
Twelve inches diameter inside, not less than half
an inch thickness of metal and TO have a LENGTH
of stroke of four feet, with half stroke cutoff
Each boat to have paddle wheels for locomo-
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 "a a
+ 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 10 meet the
terms of contract. t - 9sg-1
Each boat will be supplied with a good four
cared yaw- boat, % feet long, and with four good
oars, and also suitable yawl- boat and oars for
assisting in weighing anchor. ia59ga
a 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 copsecus
i've i've hours at rate Of not less than six mile
I'd, As to dredging power : 1t viii bave 10 raise
and discharge into ecows, of loose sand 100 cubic
yards the hour; of loose mixture of clay and
sand, lpart sand and parts clay, not less than
100 cubic yards the hour; of pure CLAW so cubic
yards the hour; of tenacious clay, and of sand and
gravel, 60 cubic yards the hour, from depth of
not less than l0 nor exceeding IL feet.
This must be the continued work of the boat
during 10 hours, and not an average during apy
shorter time of work
Each boat will have to be supplied with an al +
Choir OF not less than 500 lbs and too Hedge al-
chors OF zoo lbs. each; and with an ADEQUATE chain
cable of not less than 20 fathoms long, of iron.
Also a Al inch hemp cable 100 fathoms long
!, The trials will be under pressure of steam for
dredging not exceeding 60 pounds the square
men; Tor locomotion not exceeding $50 pounds the
The trials and inspection to be made by Uni
ted States agent as3
The boats to be ready at the places stated by the
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 so arranged as to discharge the whole
load at once. Each boat capable of holding not
less than 40 tons of excavated soil. asA
Proposals to be addressed TO the undersigned,
and marked on the envelope Proposals for
Dredge. boat. I" s - TFe
j. j. ALBERT,
Col Corps Top Eugineers
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