The republic. [volume] (Washington [D.C.]) 1849-1853, 1852-12-25
PROPOSALS FOR DREDGE-BoATs.
" Ar DEPARTMENT

| War DEPARTMENT..
| BUREAU CoRPs ToPoGaAPnicAL ENsINEERs,
| December 8, 1882.
PROPOSALS will be received until and includ-
| L ing the 10th day of next February, for the
| Instruction OF four steam dredge- boats, to be
worked by high pressure engines, viz:
One for Lake Champlain, TO be delivered, in
spected, and received az White Hail Harbor, N
Lake Champlan.
One for Lake Ontario, to be delivered, inspect
ed, and received at Oswego, ON Lake Ontario.
One for Lake Erie, to be delivered, inspec ted,
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 loug 80 feet
et-ladder and paddle wheels, to draw when
equipped not exceeding 3 feet If water.
To have two cylindrical boilers, made Of the bcst
tw nty 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
an inch thickness of metal, and to have a length
OF stroke OF four feet, with hall. stroke cut. off,
Each boat to have paddle wheels for loccmo-
ton, with suitable accommodation for the officers
and hands required to manGuvre and work the
boat. say captain, mate, pilot, engineer, and
twelve Lands; also suitably constructed coal.
bunkers for about fifty tons of coal.
No advance will be made q contract, nor will
a boat be received paid for until after it has
been inspected and tried, and found to meet the
terms of contract.
EaCn boat Will De supplied with good fOur-
cared yawl- boat, % feet long, and with four good
oars, and also a suitable yawi boat and oars for
assisting in weighing anchor.
The boat will be inspected in reference to
rangements, 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 consecu-
tive hours, at rate Of not less than six miles
the hour.
I'd. As to dredging power. 1t will have to raise
and discharge into scows, of loose sand l20 cubic
yards the hour; Of loose mixture Of clay and
sand, part sand and 2 parts clay, not less than
100 cubic yards the hour; Of pure clay, 30 cubic
yards the hour; of tenacious clay, and of sand and
gravel. 60 CUBIC yards the hour, from depth Of
This must be the continued work of the boat
during 10 hours, and not an average during any
| shorter tine of work.
Choir of not less than 800 lbs, and too kedge an
chors of 200 lbs. each and with an adequate chain
cable of not less than 10 fathoms long, of iron.
Also s e. inch hemp cable 100 iathoms long.
dredging not exceeding so pounds the square
inch; for iocomotion not exceeding $50 pounds the
square inch.
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.
Proposals will at the same time be received for
four discharging scows for each dredge boat, each
anow to be provided with two good sweeps, and
with bottoni. arranged as to discharge the whole
load al once, Each SCAT capable of holding not
Proposals to be addressed TO the undersigned,
and marked on the envelope "Proposais for
Dredge boat
J. J. ALERT,
Col. Corps Top. Engineers.
The Republic, Integencer, and Union, Wash
ington; Courier and Enquirer, and Express, New
York; Commercial Advertiser, Buffalo, N. Y;
tiser. Chicago, H.; Commercial TINES osweeo.
N. Y; Pittsburgh Gazette, Pittsburgh, Pa; A.
bany Register, Albany, N. Y. will give the above
twenty daily insertions, then twice a week until
February 10.
Dec 9-d20t& 2awtFebl0