The Saint Paul globe. (St. Paul, Minn.) 1896-1905, 1904-02-07

cast steel that will be replaced by
blades of manganese bronze.
Rudder Weighs SO Tons.
The immense steel rudder of the
Enthusiastically part of the design
rather than the equipment-weigh
thirty eight tons. It is chiefly support
ed by bearings on the upper deck. In
case of accident any of the five part
OF the rudder may be conveniently re-
placed without disturbing the other
parts.
The rudder is moved that is, the Da-
kota will be steered, by either steam
or electric steering gear. The electric
gear will be employed ordinarily, but
the steam apparatus will be relied upon
for emergencies.
While We are showing our mermaid
friends the sights beneath the big Da-
kota we can point out the anchors and
their chains, saying truthfulIy, "These
are the very heaviest anchors, ladies,
and the heaviest anchor chains ever
made in America" The weight Of each
anchor is $4,000 pounds. Standing up
right they are three times the height
OF man. The chain cable weighs 1867
600 pounds, and the total weight of
the chains and the anchors is 1870 tons
or 100000 pounds.
And when these giant anchors fail to
hold there viii be fifteen metallic life
boats with which to seek for safety
t1fteen metallic boats, one wooden boat.
nVe metallic life RATS and one metallic
launch with an alco-vapor motor, not
speaking of belts and buoys and similar
appliances.
Not less interesting than the Dakota
considered as a steamship are her many
details of special equipment Among
these, the refrigerating plant is needed
TO preserve the frozen cargo in the
hold already described Two thirty
ton Llnde marine ammonia compres-
sors will cool air, further preserving
the refrigerated cargo and also for
making ice, preserving the ships stores
and giving an American temperature
to drinking water.
There are air coolers, moreover. for
keeping the passengers comfortable in
me cabins and the general cargo
sweet in the hold. Two fans exhaust
she air from the cold storage holds
through the air coolers and circulate
$4,000 cubic feet of air a minute. The
air coolers operate as part Of the re-
migrating plant, which is arranged
IN duplicate, so that, in case Of acct
dent to one-half of the plant, no COM
merclal loss or personal discomfort
would ensue
Will Make Ice.
An 1ce-making plant, located beside
the hold for the ships provisions, will
manufacture at one operation 500
pounds of ice, which will be stored as
FAST as made. Drinking water, agree
ably cooled, will be circulated through
out the ship by special pump and
motor.
Many openings and passageways will
ala the natural ventilation of the Da-
kota, but the system of mechanical
ventilation will be elaborate neverthe-
less. Fresh air will be admitted into
all passages, and vitiated air will be
exhausted directly from all rooms. The
galley, or kitchen, is to have an ex-
hausting system with a natural supply.
Fresh air, to be exhausted naturally.
VIII be supplied to the engine room.
For this purpose thirty-six fans are
provided, varying in capacity from 500
cubic feet to 10000 cubic feet min
ute. They will change the air from
eight times an hour in one place to
forty-tYe times an hour in another
place, as different needs may demand.
Ii the air will be fresh it will also be
both cool enough or warm enough.
cooled by the methods already de-
scrlbed, it will be heated when neces-
sary by steam pipes. Every first-class
stateroom and every bathroom will fur
nlsh the additional warmth of an cleo
trio heater There will be a hot as