Smyrna times., 1933-09-06
AI7AGE SHIPS
BY NEW DEVICE
/ :. Goa Stairways, Mann
nas, sth ~Grabs" &C., Usod
70 Raise Wrecks
20 DOVER USED

rLoATING POWER o0HD
n ..s,r,ton.-Undersea stairways'
Easl.s9 9.,grabs," soup tubes, sand-
Panno'r 1lnU n,mps. fire hose, incandes-
N tIR marine lanterns, teLepnoneS' ..e'on az,
N ...aTan.Ieague" boots when en-
% "a .,e0 70 walk on the sea floor
N w ~ some Of the unusual de-
j lsss +hot - make modern ship salvag-
Il . 'I Weird, dangerous and lucra-
!, : nrotsssion, says bulletin from
Y Tsticnal geographic society,
Z e ecaasiged Sa.i vessels, ships wrecked
Il .aT .apd bars or rocks, and boats
s,.h have SUNK" continues the
'llls+in nsH fall require the services
Il. +roinpd salvage engineers as wen
4 't ot-auge and elaborate apparatus
atbor tbe problem be to recover
n and Jewels imprisoned in Davy
IT,, lorker or to put a boat back
W. work On the surface Of the sea.
4 acbins from which salvage op-
M. avn conducted must be
fniDDed with pumping plants, air
smnressOrs, electric lighting plants
Irug machines, rock-boring drills.
n rheumatic hammers, all Of
EhIeb must be designed for use un-
I water. Two general methods
4 followed in raising ships. BY
4 first used in relatively shallow
ter. air compressOrs force water
Of the ship and air into It. The
cOnd method, for ships sunk at
eat depths, makes use Of pom
M.
sSome pontoons, which are a sort
" Gat-bottomed boat, have sutti-
aeDt buoyancy to raise 1900 tons.
te first step in making use Of
u floats is to anchor them over
wreck. Heavy steel cables or
fsiDs are drawn around the hull
n the wreck at low tide and form
q swing or cradle in which it can
raised. The pontoons rise with
e tide, lifting the ship as high as
Ne water level rises. The boat Is
en tOwed TO shallOwer water
here the procedure is repeated.
Enally the decks emerge. Tempo
Nv repairs are made and the ship
IL be tOwed to a repair dock.
Tunnels Dug Under Ship.
"Where there is no tide, flexible
eel cables are run under the boat
I'D attached to steel submersible
sHlinders. Compressed air IS pumped
htO these special cylindrical pom
Ons, and they raise the ship. Some
S& these cylinders are capable of
fting go tons.
III the sunken vessel is covered
ith sand, the difficulty Of getting
fting cables or chains under the
reck Is greatly increased, and a
anne must be bored either BY a
pse regulated BY a pressure pump
sand-sucking tube.
"A fire hose was used to tunnel
L way for the lifting cable for the
5l, the submarine which sunk Is
lies of Block island.
II the object Of the salvage il
e rescue Of treasure and not
Z raising Of the wreck, explosives
Il used. After putting the explo-
nVes 10 place, the divers come to
Z surface, touch them of cleo
HcaIly and then redescend to dis
WI What treasures have been re-
kaled.
Ifeat ingenuity has been shown
'ne equipment for marine sal
ge A stairway ii a tube 200
s. long and 5 feet in diameter.
IN an observation room at the
'IOn rom which divers can 20 di.
Cuy onto a sunken vessel, was de-
ne0 ior salvaging the purser's
L ana other valuables from tbe
usllania which now lies off the
NJ NJ oi Ireland. Grabs, powerful
ng devices, act like giant hands
lnsing Up treasure to the greedy ~ r.a,l1,
en on the salvage shin.
y old-tlme rubber diving suit
~, been replaced BY artic1Iated
sults and metal observation
unaers. In these new.fasbIoned NED
lells s and with heavily weight.
09ots' men can tramp firmIv on
-s,.. uscxs submerged in 300 feet ~
IN NJ, lie. Telephones, electric lights,
ss1,.a raneras make all modern con'
easure hunter. '"e ocean
], Salvaging Lives.
u sT+.,agllg .sssa ls not limited u sbjns
,re r.a1 ,alsoes, :, for the same devices !
I'm. WI !, - raising submarines III Hi
~ .oae 'ne "a tragedy, experiments +,
heh dIsas,Ss rte.ed e prevent another
I'm s,s.ua lSasler. Into the hull Of .
b vhlcS hIia,lne aan we're built eyebolts
~ lifting pOntoons ,'a'Ieo It chains 4
b not ,.,a. ,a0., present developments
- AfdfnQn - ~
Submarine co,,1, point at which
fTocatee%f ef'''s ,ta the men aboard II we're ere
bre se. w. Major interest, there: ~sre
aethnaI.a Ias :. been concentrated tele, =