Alexandria gazette. [volume] (Alexandria, D.C.) 1834-1974, 1883-01-13
TIE Ea2..3g X..L..o-at.

/ Il" :p!ib"!HI y & dG:cri DliCn Vi tie mon.
/ !:"f M'a;:'onomah. RON u WASHINGTON
II" ;'s.z+ Ia. b"en Gt:eI up ;.ith the lalsr
elaborate l"ae:.!n:I:. and .: !es.: - engine.
are I'D u b" stationed beneath Der deck.
o"!iiy ~ & sri!DG- dc:aH2cinnn, O: The Il,
| pump IL connection :g.,h The cDuinc. t;,a
Tc=a'! ~ d"..G*! somewhat !p;4.cr than
va. ANTICIPATED. h=Tdiap "as designed IL
| u: lazy u Department., and built b.
! Jon" H'a"!. =. Chester. PcnI.. .aIia
and c1nid be r."-ga;=d indcrGnGe.l!:
! d the :igil-": themselves. the adj.
| :a"ta"e d: th!. ARRANGEMENT being that
the !":. pressure engines could be start.
cd - prompt; - the others, thus prca,l;
ah1M9 10 The efficiency 1r the cs:a!..,ci On.
! G:nez. Failure d: the pum;, 70 net .~crc-I;
! resulted !r The ztDpp1gc Of the c:lgi.r. and
! Consequently. di32D.cd The vc9-e. Tel, 81
! tins important part nf the Mianton0,oal,'s
machinery, made under the supervision Of
naval officers. mad been very unsatisfactory,
he engines WORKING the pump ,.onId woi,,
| only very snort time, and even then .cr,.
hih'y. ne result u many trial. was that
the pump vas cDEdcianei both ~ the naval
| experts ana by Mr. Roach. the builder
Even with the mel of an auxiliary engine
The pump failed, and its condemnation wa.
! 30 hh:l lhat drawings for a new one were
ordered tobc made. Master Mechanic John
i.D"hniiah however, wa5 not satisfied to
a'I"" t!.c pump to be taken out without AN
attempt 10 remedy lis defects, As the re-
Ino7al could not Dc accomplished without
cithcr tearing up the heavy iron plated deck
OF "Icahihg Inc engine to pieces. At his
suggestion It number Of alterations were
M. ss,l
atrtcicd and the y-whccl properly balapc.
ca. Subsequent trials showed that with
these changes the pump gave entire salis-
faction, and the auxiliary engine could J..
dispensed with. This result is considered
by the officers at League Island AZ great
triumph for the mechanical DEPARTMENT
and will save the Government a consider,
able sum.
The measurements the MiantonornaIt and
It, mates, the Monadnock, Amphitritc and
Terror, are as follows: Extreme length
2G2! feet; breadth, 5jl feet depth Of hold.
IA icet drausht. when ready for service. il
feet displacement, 1926 tons thickness OF
Sidc arlGor inches, steel thickness Of
WOOD backing, a inches; internal diameter
OF turrcts, u feet height Of turrcts, 81 feet:
thickness Of arinor on turrcts, 10: inches Of
steel and ; inches Of iron. Each vessel has
double bottom throughout which is divided
INTO thlriy-threc water-tight compartments
each has six boilers feet in diameter. there
arc two pairs Of engines driving twin screws
II feet IN diameter Each has storage ca
pacitE Tor $50 tons of coal, equal to five and
one hall days full stcaInins, which will en-
able the vessel 10 run ! $50 nautical miles
ne Vehtilatlng apparatus consists Of six
H 81 blowers, with total capacity Of
oo'")O cubic feet Of air per minute. Four OF
thc blowers are lifted to act as exhausters or
US feeders, thereby enabling the foul air to
DC thoroughly removed from every part of
INC 'esaci. he armament will consist of
each turrct. :"