The Tupelo journal., 1916-07-28
Government Has Spent Millions
to Make Waterways Safe
for Ships.
PERIL or JAGGED REEFS
HercuIean Fight Against Unseen
Shoals That Menace Navigation Has
Been Carried on Since f841-
New Method of Sounding.

the broad eXpanSe OF the five lakes
and the score of bays and inlets
searching for danger spots that may
claim their heavy toll in human life
and vessel tonnage.
Probably no ~frequented waterways
In the world are so hazardous as the
Great Lakes. AT no time is a steamer,
on them more than q comparatively
few hours from shore and periodically
fierce storms arise, fully as violent as
those experienced on the ocean, which
play with the steel ships, battering
them helplessly about, threatening to
engulfl o. sweep them ashore.
Over $5,000,000 has been spent by
the government since 1871 for the
prosecution of the work of charting
the lakes. Locked in heavy timber
boxes, protected from fire in immense
vaults In the old post Office building,
Detroit, are over 1900 field charts,
dating back to 1918. when a survey Of
Lake Erie was made by officers of the
British navy. With few exceptions
the maps are the result of the scien-
tife researches of United States engt-
ueers and surveyors.
Work of Generations.
These maps represent the work of
generations of men who have tolled
TO make the Great Lakes safe. AS a
result of their Investigations light
houses have sprung from barren rocks,
and the solemn ringing of bells on
buoys carries their warnings to pass
ing navigators.
While the work of charting the
lakes has been carried on since 1S41
with only one break in the task, which
occurred In 1880 and lasted until 1890,
there Is still much to be done to make
the survey a thorough one. In fact
1t was only u years ago that what
might be called an unfaiIing system
for testing the depths has been devised.
Previous to that time the old meth
cd Of dropping a weight of twelve
pounds or so, trying to keep the line
plumb, was employed. The system
was far from infalibfe.
This lightweight testing method was
employed until the '9Os. Then came
the heavy 10O-pound sounding bell.
This heavy obstacle was dragged
through the water, a machine on board
ship registering the angle the metal
was DETECTED from the boat as the
ship steamed along. The bells sheer
weight made 1t an excellent drag.
But this system was too crude and
imperfect. Twelve years ago Major
Keller, United States Engineer corps,
In charge Of the lake survey, devised
a method whereby a piano wire from
LOCO to 5000 feet in length, slung
from two launches and weighted down,
was used to search for shoal spots
and other elevations Of submarine
land.
Today this ingenious device is in
use on the lakes and as a result Of 1t
many shoal and reef regions. hitherto
unknown, have been listed.
: Increase In Commerce.
During the years Of the decade be-
ginning in 1880 the commerce of the
Great Lakes had begun to assume con-
siderable proportions. and the Ameri-
a government planned a canal at
Saulte Ste. Marie to connect Lake Su-
perfor and the lower lakes. The only
chartfng, however, had been accom-
plished by engineers connected with
the British navy.
In 1871 Capt. w. G.. Williams, who
was at that time in charge of harbor
improvements In Buffalo harbor. was
ordered to take charge of the survey
Ing OF the Great Lakes. BY 1878 what
was assumed to be a thorough survey
OF the lakes had been made and the
following two years were spent In the
compiling of documents and the per-
lection of charts then in existence and
circulation.
The years that had been spent up
to 1880 on making the geodetic or SUBJ
marine survey of the lakes had wit |
messed marvellous changes. The flow
of population moved westward ike a |
tidal wave and cities sprang seeming |
1y out Of the very earth. The five
lakes were white with the sails Of COM.
merce.
By 1890 schooners were fast becom- |
ing obsolete. The heavy draft
steamer that displaced water to the
depth of 20 feet had driven the light
vessels Of IL and IL feet draft from
the field.
That a resurvey must be made be-
came evident. Provisions had been
made only for vessels Of light displace-
ment. Appropriations were made by
congress to carry on the work again.
In searching for a shoaI area
as much as $4,000 has been spent.
The work Of the Lake Survey has for
It's object the preparation Of accurate
navigators' charts of the lakes and no
pains are spared to make the maps
complete. The work Of searching for
oho01c 10 I0u0 ond todinua Tn oxuonnl