2016년 3월 28일 월요일

The Story of the Airship 2

The Story of the Airship 2



The subs’ biggest catch was the USS San Diego, a cruiser, sunk by mine
off Fire Island, just outside New York harbor, July 19, 1918, with 1,180
officers and men aboard. Only six lives, fortunately, were lost. The
battleship Minnesota, escorted by a destroyer, struck a mine off Fenwick
shoals light ship, early in the morning of September 29, but made
temporary repairs and limped back into Philadelphia Navy Yard 18 hours
later. A fragment of the mine was found imbedded in her frame work.
 
[Illustration: Reproduced from U.S. Navy map showing track of
submarines operating in American waters during last few months of
first World War.]
 
Mines were laid at strategic points. One field, with its mines 500 to
1,000 yards apart was laid off Cape Hatteras, one at the mouth of
Chesapeake Bay, one across Delaware Bay, two in between these key
inlets, another off Barnegat, and the last off Fire Island. Some of the
mines drifted ashore, others were found and destroyedthe last ones not
till the following January. But mines accounted for six of the ships
lost.
 
One of the submarines, the U-117, built as a mine layer, planted 46 of
the 58 mines laid along our shores; four others were merchant subs of
the Deutschland type, including the Deutschland itself, which had twice
previously visited this country on ostensibly friendly missions.
 
Though the subs encountered a few victims on the way over or back, most
of the ships were destroyed in the shallower waters within 200 miles of
the American and Canadian coast. The fishing was better close in.
 
Naval Intelligence knew, through Admiral Sims’ office in London, just
when each submarine left Kiel, what its probable destination was, and
its approximate arrival date. The Navy could not broadcast this
information, lest U-boat captains learn they were expected, but took
appropriate defense measures. Even so, each submarine traveled directly
to its destination, carried out its mission.
 
U-boats operated almost with immunity from Newfoundland to the Virginia
capes. Twice American men of war passed over submerging craft so close
as almost to ram them. The U-151 worked at cutting cables for three
days, near enough to New York City that the crew could see the lights of
Broadway at night. The U-115, lying off the Virginia capes, came to the
surface one afternoon just in time for its periscope to disclose a
cruiser, two destroyers and a Navy tug a mile away, peacefully returning
from routine target practice, entirely unaware that the U-boat was
lurking in the vicinity.
 
The submarines got a poor press that summer, not only for reasons of
military secrecy, but because more stirring news held the attention of
the public. The AEF was beginning to see action in France.
 
Still headlines flashed occasionally as censorship was raised, or
survivors brought in stories. From the Philadelphia Evening Bulletin
during this period:
 
“Hun U-boats Raid New Jersey coastSchooner Edward H. Cole Attacked by
two Submarines, DestroyedTwo Attacked Off New EnglandAtlantic Ports
Closed”and the story, under New York date line: “Germany has carried
her unrestricted submarine warfare to this side of the oceanat least
five vessels sunksubmarine chasers ordered out from Cape MayCoast
Guard stations on special lookoutmarine insurance companies announce
sharp increase in rates.”
 
News Flash“Wireless report from passenger steamer Carolina says she is
under attack”The Carolina is sunk, 300 survivors are landed at Barnegat
Bay, 19 at Lewes Del., 30 at Atlantic City, others picked up in open
boats.
 
[Illustration: On this map of actual ship sinkings and mine layings
in 1918 is superimposed a sketch of the area which a handful of
modern patrol blimps might cover.]
 
Then: “Navy mine sweepers sent out to destroy mines and floating
torpedoes which had missed targettanker Herbert L. Pratt strikes mine
in shallow water on maiden voyageWar Department asks Congress for
$10,000,000 to set up balloon and plane stations along the coast to
combat sub menaceBritish steamer Harpathian torpedoed off Virginia
capesAmerican vessel, name withheld, puts back to ‘an Atlantic port’
after being chased by U-boat.”
 
The record continues: “San Diego sunk by minetug and four barges
sunkBritish freighter attackedsub sends landing crew on board lumber
schooner off Maine coast, set her afireSteamer Merak sunk off
Hatterastanker torpedoed off Barnegat Bay, beaches blanketed with
oilNorwegian steamer VinlandBritish steamer Peniston and Swedish
steamer Sydland off Nantucketnine U. S. fishing vessels off
Massachusetts coastBritish tanker MirloU.S. Schooner Dorothy
Barretttanker Frederick R. Kellogg” and so on and on.
 
Events of the time and since have swept these happenings out of the
minds of most Americanseven if they knew of it at the time. But
somewhere, half forgotten in Naval files, is an official report,
painstakingly compiled after the war, from ship logs, from stories by
merchant captains and crews, even by officers of surrendered German
submarines, to make up as complete a record as possible of one of the
amazing operations of the warand one whose magnitude, in territory
covered and damage done, few suspected, even within the Navy, at the
time.
 
Only two subs had so much as a brush with American ships. The transport
von Steuben, former German liner, proceeding to the rescue of men in
life boats from a merchant ship, dropped depth bombs which the U-boat
escaped by diving to 83 meters, lying low till the enemy had gone.
 
Closer call had the U-140, largest and most modern of the fleet, which
after sinking several ships off Diamond Shoals, including the light ship
itself, almost caught a tartar when the Brazilian passenger liner,
Uberabe, zigzagging furiously to escape, sent out S.O.S. messages which
brought four U.S. destroyers hurrying to the rescue. Nearest was the USS
Stringham, which proceeding under full speed, using the Uberabe as a
screen, charged on the U-boat, dropped 15 depth charges when the U-boat
dived, timed to explode at different levels.
 
[Illustration: Training exercises with U. S. submarines have taught
airship captains much about the habits, movements and
characteristics of the underseas craft. (U. S. Navy photo).]
 
[Illustration: The year before America got into the last war the
German submarine U-51 sank a half dozen merchant ships off Nantucket
Island then proceeded into Newport. (U. S. Navy photo)]
 
[Illustration: Navy airships in practice patrols identify, as to
class and nationality, all surface ships in their area, learn to
recognize the silhouette of a submarine from afar. (U. S. Navy
photo)]
 
The U-boat captain, one of the best in the German navy, drove his craft
at a sharp angle to 400 feet. One charge exploding underneath the sub
turned it stern upward till it stood almost perpendicular. He managed to
level out finally at 415 feet, lay there as long as he dared, finally
reached the surface. His ship was so badly crippled it had to abandon
its mission and set out for homethough it sunk a couple more ships in
the mid-Atlantic on the way back.
 
The only U-boat casualty was the U-156 which after getting 34 victims in
American waters, getting eight in one day, was itself sunk by minesbut
off Faroe Island as it was almost home.
 
This then is the story of submarine operations in U. S. waters in 1918a
half hearted effort of short duration started late in the daybut which
destroyed 100 ships, totalling 200,000 tons, most of them close to our
shores.
 
No one could doubt but that in the event of another war submarines would
be used again, and in more vigorous fashion. The American fleet might
easily keep major enemy ships at a safe distance, and bombing attack
from any part of Europe or over the Pacific would have little military
value. But certainly submarines would find their way past the screen of
Navy craft, bob up off American harbors, again to lay mines in the path
of coastwise steamers, deliver hit-and-run attack by torpedo and gunfire
at American craft.
 
We could be equally sure that these ugly motorized sharks, churning the
muddy sub-surface waters, would not be satisfied to attack merchantmen
only, would be looking for bigger prey.
 
On the map showing the operations of German submarines in 1918 let us
superimpose, as an example, the patrol area which two blimps, basing at
Boston, Lakehurst, Cape May and Norfolk might effectively cover in a 12
hour period.
 
A patrol area of 2,000 square miles per ship is conservative. It assumes
the ship flying at no faster than 35 knots, having visibility of five
miles in all directions. As a matter of fact, allowing a little more
than 40 knots speedand the airship cruises considerably faster than
thatwe might say that a modern blimp could patrol an area 10 miles wide
and 500 miles long in the 12 hours, or an area of 5,000 square miles.
But by criss-crossing back and forth in accordance with a progressive
plan, an area of 2,000 square miles could be made reasonably
secureexcept under extremely adverse conditions of visibility.
 
Laying these patrol areas down over the map of submarine operations of
1918 it is apparent that such patrols would cover much of the territory
where ship sinkings were achieved, cover all of the areas where mines
were laid.
 
With blimps operating from such bases, in addition to the patrols being
executed by other naval craft, we might conclude that no submarine could
venture within 100 miles of the American coast during daylight hours
without considerable risk of detection, and that blimps should be able
to make contribution to the safety of coastwise shipping and harbor cities.

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