Daily evening star. [volume] (Washington [D.C.]) 1852-1854, 1854-07-21
STEAM MACHINERY FOB q. s. STEAM
FRIGATES.

/ srJ NAVY DKpARTRET, July !, 1854.
PROPOSITIONS will be received at this depart
Il ment until the first day of August next for the
complete construction Of the steam machinery and
appendages, and placing it on board of five auxi
ary screw steam figates to be at least Z55 feet in
length and of 3000 tons measurement, one of which
is building at each Of the United States navy yards
at Boston, New York, and Philadelphia, and two al
Nerfolk.
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 iron, with telescope chin
neys tho propeller, with the connexions for hoist
ing up of composition. The fresh water condensers
machinery for hosting, ventiating, pumps, &C.,
With sppurtsnances OF all kinds, must be those
most approved for m arine engines The tools and
duplicate pieces necessary for efficient cruising
ship-otwar, list of which must accompany the
proposal and also the coal bunkers, must be inclu-
dsd. - g. ,v
ALI the wood and carpenter work necessary to
adapt the vessel for the reception of the engines,
boilers propellers &C., will be ct the expense of the
Navy Department. and 1t will furnish the usual fa-
cilities and labor fer 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 % in
Guiding the keel length not to exceed 81 feet can
be allowed in the body Of the ship, including the
tire space under the birth deck. The greatest
breadth Of this space under the beam will be Al f.
and the height from the timbers to the bottom of
the beam II feet the area Of the section being 662
square feet. I'D.
The weight Of all the steam machinery, water in
the boilers and coal within the space gveu and in.
cluding the propeller and shaft with appendages OF
all kinds and spare pieces has been estimated I35
tons of 2A0 pounds, OF which $50 is for coal.
The distance between the main stern-post, and
the rudder post may be six feet if that length is
cesssry for the propeller in fore anu aft direction
and the depth from the load water line to the top Of
the keel under the propeller will be q feet. The
length from the mainmast to the stern-post will be
about liz feet The area of the greatest immersed
transversed section to the deep load line will be 1855
square feet.
AS auxiliary steam frigates the spars and rigging
will be thoss of fgate of the first Glass; Of lSOO
tons measurement.
The particular arrangement Of the machinery will
be left with those whose propositions may be accept
ed 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 admit. &...
The terms of payment will be a. follows: when
onethird Of the work provided for by the contract
shall have been completed to the satisfaction of the
department, there shall be payment of one fifth of
the whole amount of the contract; when two-thirds
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 less than one week at sea,
there shall be a further payment Of one fifth; and
when the ship thail have been in possessrn of the
department. snd performed satisfactorily for six
months, the remaining sum shall be paid; the re-
pairs necessary during this period, from defective
workmanship and material, teing at the expense Of
the contractor. ''.9 = 49,.
Each proposal must specify the ship for which
the offer is made, and must BE- accompanied by full
and complete specifications and drawings, which, ii
desired, will be returned those whose offers may
not be accepted 1t must also be stated at what es
tablishment the work Is to be done. .... sd.
Each proposal must be accompanied by guaran
tee that the contract, when awarded, will be faith
fully performed, and the successful bidders will be
required to enter into security for that purpose in
the Of threefourths the amount Of the contract
j. u. DOBBIN,
jy l-2awtlAug Secretary of the Sayy.