The republic. [volume] (Washington [D.C.]) 1849-1853, 1853-01-18
PROPOSALS FOR DnninleE-BoArs.
Var DErARrMKnr

/ WAR DEPARTMENT.
cay CORPS TYPOGRAPHICAL ENoINEKRs,s
/ December s, 1852
| PROPOSALS will be received until and ;,cnd
| ing the 10th day of next February for the
| construction OF four steam dredge- boa e, to be
worked by high pressure engines, Wig: iast1a7 o.
One for Lake Champlain, to be delivered, in
spected, and received at White Hall Harbor.I on
Lake Champlain. b Bss4 l 8.
One for Lake Ontario, TO be delivered, inspect.
ed, and RECEIVED at Osweego, on Lake Ontario.
and received at Eric, on Lake Erie. h1
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
ct ladder and paddle wheels, to draw when
equipped not exceeding 3 feet of water. 8eTes1
10 have two cylindrical boilers, made of the bes t
polier iron, one quarter of an inch in thickness,
each '''ail5 y
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 lenuih
of stroke of four feet. with half stroke cut off
Each boat to have paddle wheels for locomo-
ton, with suitable accommodation for the officers
and hands required to mansuvre 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
Each boat will be supplied with good four
Dared yawl boat, ~ feet long and with four good
oars, and also a suitable yawl-boat and oars for
assisting in weighing anchor.
The boat will be inspected in reference to ar
rangements, materials, and equipment, and will |
be subject to the following trial. 20 5asa
St. 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 Jess than six mile
the hour. .l ..a IN .,-.f.5',. s .-st,, -.
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 clay and
sand, part sand and parts clay, not less than
100 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 a depthaof
not less than 10 nor exceeding 10 feet. 8 ar
This must be the continued work of the boat
during 10 hours, and not an average during any
Each boat will have to be supplied with an al :
Choir of not less than 800 lbs and too Hedge all
chors OF 200 lbs. each; and with adequate chain
cable of not less than 40 fathoms long, of IRON
Also a inch hemp cable 100 fathoms long.
dredging not exceeding 60 pounds the square
inch; for locomotion not exceeding $50 pounds the
square inch.
The trials and inspection to be made by Uni
ted States agent. '3'' tH'R''i 'a'a
The boats to be ready at the places stated by the
3 Proposals will at the same time be received for
four discharging COWS for each dredge boat, each
scow to be provided with two good sweepa 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. b7i7j a5awT1
Z Proposals to be addressed to the undersigned,
and marked on the envelope Proposals for
Dredge, boat" Is asai sJ ssaar .GoaE52f.a
3aI ,Ilaiae 5val I'd .ss.GaJ. J. ALERT
& ,,,i1l,, iflr, Col Corps Top: Engineers,