Daily evening star. [volume] (Washington [D.C.]) 1852-1854, 1854-08-12
STEAM MACHINERY FOR q. s. STEAM
FRIGATES,

NAVY DEPARTMENT, July I, 1854.
PROPOSITIONS will be received ct this depart
Il ment until the fret day of August next, for the
complete construction of the steam machinery and
appendages and placing 1t on board of five auxili.
airy screw steam frgates to be at least 255 feet in
length. and Of 5000 IONS measurement, one of which
s building at each Of the United States navy yards
at Boston, Nav York, and Philadelphia, and two at
Norfolk.
Each Offer must be for specific sum, and include
all patent fees for any arrangement that may be
proposed, and must state the period within which
the work Can be completed
The boilers are to be of ron with telescope Chin
neys the propeller, with the connexions for hoist
ing up, Of composition. The fresh water condeDsers,
nachinery for hosting, ventilatins, pumps, &C.,
1ith appurtsnences OF ali kinds, must be tn Sc
most approved for rine engines The tools and
duplicate pieces necessary for efficient cruising
ship-ofwar, list of which must accompany the
proposal, and also the coal bunkers must BIZ inclu
ded.
All the wood aud carpenter work Recessary to
adapt the vessel for the reception Of the engines.
boilers, propsilers &C., will bs at the expense of the
Navy Department, and 1t will furnish the usual IA
:ilities and labor for hosting the machinery on
board.
For the accommodation Of the entire steam MA
chinery with fuel for ten days consumption at the
average speed at load draft of water of % fe-t in
Guiding the keel, length not to exceed 90 feet can
be allowed in the body of the Ship including the
tire space under the birth deck. The grestest
breadth of this space under the beam will be II
and the height from the timbers to the bottom of
square feet.
The weight of all the steam machinery, water in
the boilers and coal within the space giVen and in.
GLIDING the propeller and shaft, with appendages of
all kinds and spare pieces has BEEN estimated at 75
tons OF 20 pounds, OF which $50 tons ia for coal
the distance bstWeen the main stern-post, and
the rudder post may be six feet if that length is
cessary fer the propeller in fore anaft direction,
and the depth from the load water line to the top of
the keel under the propeller will be II feet. The
teagth from the maInmast to the stern-post will be
about liz feet. The area OF the greatest immersed
ransversed section to the deep load line will be S65
square feet
AS auxiliary steam ftigates the spsrs and rigging
will be those Of frgate of the first class, OF 1890
tons measurement.
The particular arrangement Of the macl inery will
be left with thoss whose propositions may be accept
cd as combining the greatest number Of ADVANTAGES
the desire of the department being to obtain the
greatest speed and power with the most economical
consumption OF fuel, which the space available for
that purpose will sdmit.
The termS payment will be as follows: when
onethrd OF the work prsvi ded for by the contract
shall have been cnpleted to the satisfaction of the
department. there shall be payment of ons-ffth of
he whole amount Of the contract; when two-thris
OF the work SHALL In Like manner be completed,
there shall be further payment Of one fifth when
the ship shall have made trial trip, satisfactory to
the department, Of not loss than one week at sea
there shall be further payment Of one fifth; and
when the ship hall have been in possessir of the
department., and performed satisfactorily for six
months the remaining sum shall be paid; the re-
pairs necessary during this period, from detective
workmanship and material, being at the expense of
the contractor.
Each proposal must specify the ship for which
the ofer Is nsde, and must be accompanied by full
and complete specifications and drawings, which, if
desired, will be returned those whose Offers NAV
not be accepted 1t must also be stated at what "a
Enlistment the work Is to be done.
Each proposal must be accompanied by q gusran-
Tee that the contract, when awarded, will be faith
fully performed and the successful bidders wIl be
required to enter into security for that purpose in
the sum OF throefourths the amount OF the contract
]. G. DOBBIN,
Vi-ZaWtlAug Secretary of tbs Navy.