The record-union., 1893-01-06
Special to the REooRD-UNIoN.


cessful. Official computations upon the
data which was taken will not be com
pleted for a week or two, and the exact
amount of horsepower which the Mon
terey developed will not be known until
then. But approximate computations
were made as soon the run was finished
this afternoon and these show develop
ment of 5,452 horsepower on the main
engines alone. The horsepower OF the
auxiliary engines i. estimated at from
100 to 200.
Both the contra RS and naval en-
eineers who were n duty during the
trial are confident nat the 5,4OO horse
power required by zee contract has been
exceeded, and they xpress entire salts
faction with the pei rmance of the en-
gines to-day. J.
During the four Ours run under
forced draft there was not the slightest
accident to any part of the machinery.
The maximum revolutions were l6S per
minute, and the average for the four
hours was about 1872.
AS there is no more speed requirement
in the contract, no great effort was made
to ascertain the exact speed of the vessel
during her run to-day, but calculations
based upon the patent log and imperfect
shore bearings showed a maximum
speed of over fifteen knots per hour, and
an average speed of about fourteen knots.
The members of the Naval Trial Board
considered that this speed was all that
could be expected of vessel of the Mon
terey type, having such great beam and
q low freeboard, which permitted a con-
tinuous circle wave of water to pour over
her bow and flood the forward deck.
The feature of the trial run which at
tracted the greatest attention on the part
of the naval engineers was the entirely
successful performance of the Ward coil
boilers, an American invention, which
was used for the first time on so large q
scale.
The increase in the number of revo
lutions over any previous performance of
the engines was due to the change which
was made within the past week in the
pitch OF the propeliers. During the last
preliminary run, over week ago, steam
pressure was maintained at the highest
possible point, but it was impossible to
ObldlA1 AnOl6 llldll Lot IGNOlllIlOuS, dS Llle
maximum and average was less than $50.
With that number of revolutions the in
dicated horsepower was about 500,
which was 200 less than the contract re-
quirement, and which would have sub
jected the Union Iron Works to penalty
of $4,000. Accordingly the contractors
determined to reduce the pitch of the
screws, for the purpose of obtaining an
increase in the number of revolutions
per minute, and consequently an increase
of the horsepower. The pitch of the
screws was formerly twelve feet six
inches, but was reduced about eight
inches.
The Monterey left her moorings off the
Union Iron Works early this morning
and steamed slowly around Mission Bay
until she was boarded by the trial board,
of which Rear Admiral George Brown is
the senior officer, She continued to
cruise around for half an hour more,
gradually increasing the steam pressure
and revolutions of the engines. About
$40 she passed Hunters Point, headed
for Angel Island. and started on her Off
cial trial. The engines were making l62
revolutions at the outset, and in five
minutes they had worked up to I64.
For the first half hour the tide was
running strong against her and there was
stiff wind dead ahead. The water was
piling up on her forward deck in great
wave five feet deep and running off the
sides in torrent. Right at the point of
the bow it was banked up by the anchors
and hawse pipes and then swept back
almost to the barbette of the forward
turret. Clouds of spray were caught up
by the strong wind and swept over the
bridge and the superstructure also above
the deck, and persons on the bridge were
drenched in a moment. Cinders flew ont
of the smoke stack and it was necessary
to cover the matches with tarpaulins to
prevent their getting into the machinery.
Tugs and ferry boats gave the coast
defender free course as she passed Goat
Island, and every steam craft on the bay
near her saluted with its whistle.
A half-hour's run was made on q
straight course, and the engines main
tanned an average of about 1G4 revolu-
tions.
The engineers took three sets of indi-
Gator cards in the half hour, upon which
the computations for horsepower will be
made. \ glance at the first cards taken
showed that they indicated all that the
contractors could wish, and there was no
doubt that the race against horsepower
would be successful, if the pressure could
be maintained without accident for the
four consecutive hours.
After she had reached the eastern shore
OF Angel Island long turn was made,
with the engines still working at full
power. The vessel then returned 10
hunters Point over the same course, and
this time the wind was with her and
there was no spray flying. The cards
taken on the second half hour were even
better than the first ones, and on this run
the maximum of les revolutions was
reached.
The Monterey occupied the four hours
in rapid cruising back and forth over the
same course, and the engineers took
their sets of cards every half-hour. The
machinery kept cool all the time. There
were no streams of water pouring on if.
as is frequently necessary. The atmos-
phere in the engine-room and fireroo,n
became heated to an uncomfortable do
gree, but the engineers and tire,,,er bold