The Madison daily leader. [volume] (Madison, S.D.) 1890-current, 1915-07-26
SUBMARINE HAS
5000 MILE RADIUS
New American Craft Gan Cross
the Atlantic Twice.
new ENGINE THE SECRET.
Inventor Lake Says the G-3 Can Go TO
Europe, Do What She Sets Out TO Do
and Return Without ~Replenishing
Her Supplies - First Tests Have
Proved Satisfactory.

Proved Satisfactory.
The first American submarine to meet
tests designed to prove that 1t could
cross the Atlantic ocean and return
without stopping recently completed
trials ON Long Island sound, showing
1t has a cruising radius OF more han
5000 miles. The submarine is the G-3.
built by the Lake Torpedo Boat com
pany OF Bridgeport, Conn.
The realization of this dream of Simon
Lake, the inventor, hinges on b use
OF !. Swiss engine which burns heavy
oil. The efficiency OF the new engine
is so great that the tiny Ga can carry
enough fuel to cross the Atlantic twice
without stopping for n new supply.
The Swiss engine drives both on the
surface and under water, replacing the
double gasoline and electric engines
formerly used, the gasoline to drive the
craft on the surface and the electric
motor for undersea travel.
The G-3 Is only 100 feet In length.
The seven new Lake boats being con-
structed for the United States navy
will be more than $50 feet In length
and will have a much greater radius
OF activity than the Ga. Mr.. Lake
said that some of the new German
u boats had a cruising radius equal
to that of the Ga. but that the Ga
was the first American submarine able
TO carry war across the ocean. He
said the new Lake boats, which Will
also use the Swiss engine, would be
the equal of anything Admiral Tirpitz
now commands.
100 Horsepower Engines.
The engines for the ca, which are
OF 1900 horsepower, were imported
from Switzerland, but American firms
viii In the future be able to maxi the
machines, so hat the development of
the United States submarines viii not
depend on getting the engines out of
warning Europe. The engines were
installed I'm the ca at the New York
navy yard, and the tests have been
carried on In Long Island u un-
der the supervision OF naval officers.
w ~ Gh N ~ A0A0G Va
$500 miles at the top speed of eleven
knots and at approximately eight
knots a radius of more than 6,0O0
miles. The tests consisted of trips
up and down the length of the sound
on the surface, under the water and
In every condition to which the craft
would be subjected IN actual warfare.
The tests showed that the ca could
make lat knots an hour on the sur
face and 1917 knots submerged when
under pressure. The G-3 cost $450,000.
Mr.. Lake was asked to tell what ca
pabilities the CO had developed.
"You can say" replied the inventor,
1T Is perfectly practicable for the G-3
to cross the Atlantic. While there is
no immediate prospect OF any attempt
being made, the G-3 with her new en-
gines can cross the ocean, do what
she went to do and come back with
out dependence ON any base OF sup
plies. 1t is merely a question of the
economy OF fuel"
Mr.. Lake said the Swiss engines
were basically the same as were being
used in the new German submarines,
but with certain differences. The
United States government has posses
sion OF the specifications OF the new
engines and is closely guarding the
secrets. 1t Is said that American In
ventors had been able TO improve on
the original for the higher power mo
tors which will be installed In the
seven new Lake boats.
when the new boats are finished
In about a year and a half" said Mr..
Lake, "they win be a match for any
submarines In the world. They VIII
cost $635.O00 apiece, will be equipped
with six torpedo tubes each and will
have a cruising radius OF much more
than 0.0O0 miles. They win be more
than 900 feet long,