The Detroit times., 1915-10-22
WIN Stand Heavier
vater Pressure Than
Germany's
'ENGINES GAVE
ALL THE TROUBLE
TcutOn's PrOpelling
Power Admittedly
is Superior

RD VIZ VI CIdit sAS Sohh"'HN sH~
<fko underwater boats OF no othel
1otion are built on stronger lines
n fact, naval officers say that none
fUf tho great world powers requires
~ cCnstruction OF submarines to
5tuaiGt anything like the great va
~ pressure that Is required -
1zoDrtcan submarines.
4 nubmarines built for the Ameri-
80 aavy must have hull strength
|nnG Glcjont TO resist the pressure OF
- ocean at a depth OF 800 feet.
,y1nGoro these delicate craft are &C
:6opeod they must have withstood
snrunnurU st q depth around 2l0
80 which II deemed sufficient,
II Uupf be strong enough TO go
loWer. British and German
>rlnos are not required 10
peossure at 800 feet. the re-
' r. unt usually running around
~. German submarines, as
& ~ ore tested At 4 depth around
~ ~. ana those of the British
1&t sometimes 1t greater depth.
x @Cm the outset of submarine
Gnc11un the American under
~ n9an have been built on stout
na 9Ae original a. boats are
lc1ag rood service daily In the
nDonoo, as are some Of the
1P Gnsltsr Submarines. The first
nns1nss built Tor the navy are
601 - tAe surface by gaso-
Gn61noo. which have been re
M r. newsr boats by Diesel en-
Bning heavy fuel oil.
D ltnt periscopes were far from
1SAoey and are beino rapidly
nnpg ~ the more efhcient peri
NAich have been evolved
- introduction OF subma-
kno = naval fActor.
k6e dotsct Of our early sub.
wh1ch was common 10 un.
og beats % III navies in the
0was faulty ballast tanks
- vater.ballast tank on a
~ = = vital part OF the ship
~ exDerts lost no time In i'm
tn1D eoature. All Of our sub.
now have improved tanks
Unhmas1ne defects those az
~ propsliing engines have
sln0ot nunsrous and bother
~ development Of this type
&1ne hes been very gradual
vosy recently. however. engine
- hAs been Of common occur.
1 - submarines, and the work
(onstsuction has been delayed
o ~ engine defects probably
X tyom al other defects com
- exAmple. while the contracts
tNbmarines usually call for de-
III within two years. II has been
Utood st all times that the yes.
fNoO6 not be completed and de-
- - that time. and the reason
~ a1vpys has been the engines
1C1eved. however, that the sub
~ englnes have been so far
on1 that from now on delivery
- hoots may be confidently ex
W M1fhin the contract period
CloA oxports concede that Ger
lg nay have . superior subma
w nx1ne.
1of1nany was the birthplace o.
e Diesel engine" said one expert
IL r. only reasonable to believe tha
D 0efmAns have succeeded in de
D0ng the various types OF thii
C3oe 70 . higher degree Of perfec
lo4 thon the United States or an,
er naval power. When II Is real
M tAot our first heavy oil subma
~l1o engine was brought to thii
k1y b the head Of one man
M NJ from 0ermany--it Is no
1G1t 10 understand that tn,
&Wboeks 10 IT. rapid development
1o oonaiderable. In recent year
<no1 ouoines have been greatly i'm
Duo1 Aa1 are now very promis
oounuoh GO the same individual
>11n . maAy Of the submarine
oyUGop1 Tor the British navy a
& - United States navy. nava
eEm Aere are quite certain tha
1f NIL has nothing on Uncl
a. Ne way Of underwater craft
NY b view Of the fact tina