The Hawaiian gazette., 1915-10-26
MUCH EXPECTED
OF NEW TYPE MI
Submarine Is Not Only Larger
But Different In Every Way
From Old Holland

The submarine MI, built by the
Electric Boat Company at the Fore
River yard, and successfully launched
September IA, is not only the largest
submarine yet launched for the United
States government, but the first ex.
ample built in this country of a, new
type from which much is expected.
All previous boats built by this com,
pany for the government up to and in.
Guiding the l. class, that is to say, all
boats now in service, except the G
class, which were made by other build,
ers, were developed from the original
Holland by the technical staff of the
Electric Boat Company under the direc,
tion of l.. Y. Spear, ex-naval construc.
tor, United States navy. These vessels
have proved efficient and the type has
been adopted by many of the great
naval powers, says the Nautical Ga
zette.
No Longer Holland Tyre
Owing to the many improvements in
corporated in these boats, the great in.
creases in size, speed, radius, etc, those
bui't III lCfChl NNuIb DtuI lllIlt
semblance to the old Holland, never
theless, as they were developed step by
step from the Holland they are gen,
orally and properly known as the HoI
land type.
In recent years there has arisen u
demand for very IarPd submarines
with high surface speed and all OF
the naval powers are now DESTROYS OF
securing such, boats with sufficiently
high speed, viz: twenty knots, to en-
able them to operation in conjunction
with the battle feet. In fact, naval
expert opinion in general looks toward
the development of this type to replace
the torpedo. boat destroyer just as the
small type of submarine has replaced
the torpedo boat proper
Retain Good Features
This demand was the real reason for
the appearance of the type represented
by MI, and it is radical departure in
design and construction from the per
fected Holland. This Spear type is con
strueted under new patents taken out
by Mr.. Spear, with naturally all the
good features of the perfected Holland
retained which were cOmpatible with
the new system of construction.
The MI is 1875 feet over all, with
cruising radius of 5000 miles and al
estimated surface speed Of sixteen
knots. She has four torpedo tubes and
deck gun. She is considerably larger
than all boats previously launched, al.
though not so large as the feet sub
marine Schley, building by the same
company. The Schley, in fact, is al
enlarged NJ, so that the trials of the
latter are awaited with great interest
AS foreshadowing the results to be OBJ
tanned with the SGhley.
New Engine Type
The MI not only represents a new
departure in huh cOnstruct ton. and ar
rangement, but she is the first vessel
to receive a new and improved type OF
submarine engine entirely developed in
America. These engines operate on the
Diesel cycle, but have many important
improvements over similar engines in
stalled in European submarines.
All of the United States submarines
built by the Electric Boat Company
since the d class have been fitted with
Diesel engines. but hitherto these have
been notifications Of engines of Euro.
pean design. Most of these boats are
equipped with what are substantially
depulicates Of the engines installed in
the German submarines.