New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1912-05-05

distance from KEEL where the Nulkan was
stationed. Before the Nukan arrived
lighters and other salvage apparatus were
rushed to the spot and actually succeeded
i'm getting the bow of the U3 up TO the
surface so that the imprisoned crew could
be extricated through the torpedo tubes.
but her commander and two subord,nates
were confined I'm the coming tower. whence
they had gone for the purpose OF trying to
raise the boat through the operation or
compressed air-control centred at that
point These men could not be released be-
fore the arrival OF the Vulkan, and by
the time she succeeded In raising the C3.
Commander Fischer and his assistants had
persisted by asphyxiation. Nevertheless.
the Vulkan proved equal to her task
when once upon the spot. but she Is not the
latest thing in the way OF special auxil.
larry for the submarine service.
NEW TESTING AND SALVAGE DOCK.
A few weeks ago there was launched at
spezia at the shipyard Of Fiat-San Gior-
eio the builders Of the famous LAURENT
submerslbles. a special type of both testing
and salvage dock for submarines. This
dock has been built for the Italian govern
ment as an adjunct TO that nations rapidly
growing fotilla of underwater craft. and
is of special interest to us because II is the
latest development OF this novel type OF
/, naval architecture and of an order OF craft
of which we stand in sore need Our ftotilla
of submarines is assuming dignihed pro-
portions and yet We have available no spe-
cial facilities TO help them should they be
carried to the bottom suddenly In depths or
water where quick action might, In all
proba bility be the means Of saving pre-
cious life.
The German Vulkan is intended essen
. TALLY 10 raise a submarine which has gons
to the bottom and to carry her 10 dry
dock afterward-it has no other reason for
being. The Italian dock, on the other
hand. will not only do all that the Vulkan
Is designed to accomplish, but It will make
1t possible TO subject submarine to the
physical conditions OF deep submergencs
without exposing the craft to the difficuI-
ties and. perhaps. the dangers OF such
test. In other words, the underwater tor
pedo boat can be tried outright at the
yard of her builders or at any other con-
yenient place without sending her on shore
10 hunt for 90-foot hole for the trial.
avoiding the time and the money spent ana
also the delays which stormy weather
might impose.
The advantage of this Italian invention
has been amply emphasized by the nerve
wracking experience TO which the trial
crew of the submarine Carp was subjected
recently in San Francisco Bay. Ordinarily
the method Of operation in these submer-
l. To- lxvo OF
and to tow it to the desired spot of the
coast. Inside the submarine are placed q
number OF instruments which record any
fiexlng or yielding OF the hull under hydro
static pressure 200 feet below the surface.
These instruments are read after the boat
returns to the surface. When the boat ID
sealed and so ballasted that the application
of n few more scores OF pounds attached
externally will cause her TO sink, strong
wire cables are connected TO the salvage
derrick and then down she Is lowered into
the depths of the sea. As we know, no
one is inside of her.
The fact that some OF oar summarizes In
service have gone down purposeH with
their crews aboard to depths of more than
i4o feet inspired the trial crew Of the Carp
to volunteer TO make the initial deep SUBJ
mergence test within the boat. Cnfortu-
nately the Carp got foul OF n wire cable
attached to "A tcn-ton anchor. by which the
submarine had drawn herself down, and II
was apparently impossible To release her.
She was expected to remain below ten min
utes but IL was more than an hour beforo
she arose. and then she shot TO the surface
so violently ttat she preached like great
whale. but fortunately remained at tho
surface to the intense relief Of the anxious
spectators and to her own crew. IL pointed
a moral TO that method OF testing subma'
rines. and there Is no need of picturing the
state OF mind Of the men while held at the
bottom
The Italian invention gives for the testing
of submarines an apparatus by which
scientific data of much value ana need can Y
be obtained. and makes II possible FOR men
to be safely inside Of the underwater beat
at all stages Of the operation. % that thsy
can watch every effect Of the applieAttoa
"a 0fxh nawA ~