Periscope mine
Item
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Title (Dublin Core)
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Periscope mine
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Article Title and/or Image Caption (Dublin Core)
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Title: Two mines which make marine warfare more terrible
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Caption: The periscope mine—the Teuton lure for British skippers. The periscope is merely attached to the top of an anchored mine.
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extracted text (Extract Text)
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THE accompanying illustrations show
two different types of mines which
have been devised since the great war
started. The mine with the periscope
attached is said to be the latest Teuton
lure for British skippers who are seeking
the $2,500 reward offered by the British
Admiralty for ramming a submarine.
Not long ago one of these periscope
mines was sighted in the English channel
by a steamship captain. Taking it for
the periscope of a submarine the captain
ordered all speed ahead, in an attempt
to ram what he thought to be a lurking
U-boat. As he was fast approaching it
he noticed, to his bewilderment, thatit
did not move. He became suspicious
and when almost upon the periscope,
ordered his pilot to give it wide berth.
Later he investi-
gated cautiously
and found that the
periscope was at-
tached to a huge
mine.
The other mine is
the invention of
Giovanni Elia, of
Paris, who believes
that it is the most
effective of any
mine now in use.
His mine cannot
explode by coming
in contact with strong tides or
striking slight obstructions in
the water.
It is anchored, and, when a
moving ship comes in contact
with it, a shock is produced
which is absorbed entirely by
the circular frame projecting
from the body of the mine.
Under the influence of this
shock three screws in the firing mechan-
ism are cut through.
In the meantime the mine, having
come in contact with the vessel, turns,
under the effect of the friction of the hull
of the ship. This turning movement
cocks a striker .and then releases it,
causing the explosion. The mine can be
manipulated and transported without
danger prior to its being submerged.
The Deepest Known Place
in the Ocean
THE greatest ocean depth known is
5,269 fathoms, or 31,614 feet. Itis
about seventy-five miles southeast of the
Island of Guam. This figure was ob-
tained in 1899 by the U.S.S. Nero when
running a line of soundings to locate the
Honolulu-Manila cable. The mean
depth of the entire ocean is about 2,100
fathoms, or 12,600 feet.
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Language (Dublin Core)
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eng
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Date Issued (Dublin Core)
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1916-11
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pages (Bibliographic Ontology)
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683
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Rights (Dublin Core)
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Public domain
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Archived by (Dublin Core)
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Filippo Valle
Popular Science Monthly, v. 89, n. 5, 1916
