—
ee |
For Umbrella,sutmerged 4/5 scale submarine model, SCUA' 29, at a
range of 1600 feet, was instrumented with strain gages, pressure gages, de=
flection gages, high-speed cameras, and roll, depth and flooding indicators.
The hull was plastically deformed but did not rupture.
Four of the ten ex-
ternal ballast tanks ruptured and all were seriously dished resulting in
some loss of buoyancy.
SSK 3 was submerged at periscope depth and operated
by its crew et 18,000 ft. from tiahoo surface zero.
unmanned and located bowe-on at a range of 2900 feet.
cri: /DUE
yt RG
formations on SSK 3 occurred from either shot.
,
concluslénymay
Nik
“7
ie
In Umbrella, SSK 3 was
No permanent hull de-
The following preliminary
be made:
aw
PIGE Z7A