COORDINATING COMMITTEE RECORD OF DISCUSSION ON ITEM 1510 - LOCATION APPARATUS, UNDERWATER 7TH AND 8TH DECEMBER, 1959

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP62-00647A000100060081-7
• Release Decision: RIFPUB
• Original Classification: S
• Document Page Count: 8
• Document Creation Date: November 9, 2016
• Document Release Date: September 9, 1998
• Sequence Number: 81
• Publication Date: December 15, 1959
• Content Type: MIN

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S E C E T
?' ' = ? ? COCOM Document 371 .10 2~,
C00RDINITING COMMITTEE
RECORD OF DISCUSSION
ON
ITEM 1510 - L.OCiiTION .pP. k .TCS, UNDEhai.LTER
7th and 8th beEL-i259.
Present: Belgiun(Luxei.~bourg), France, Ger aany, Italy, Japan, Netherlands,
United Kingdom, United States.
References: 000011 Docs. Nos. 3700.2, 3714.00/1, 3715.10/1 and W.P. 1510/1 - 4.
ill iit the opening of the second round of discussion, the GERMLN Delega-
tion informed the Comi.ittee that, as a result of bilateral discussions between
United Kingdom and Gerrian experts, they had decided to withdraw their proposal
appearing in paragraph 1 of COC01M1 3715.10/1. They had reached the conclusion
that it was preferable to avoid a technical definition in this particular in-
stance, in view of the extreme difficulty of establishing cut-offs which would
free exactly the equipment that should be freed, and which would not lead to
discriminatory treatment between countries. In this connexion they had dis-
covered that their original proposal would release a certain German apparatus
while embargoing parallel United Kingdom and Japanese equipment. They had
therefore reverted to the present definition as being the safer and more satis-
factory approach as long as the majority of usdics continued to have predomi-
nantly military uses. Under the terms of the present definition, Member
Governments could at any time ask the Committee to examine the addition of
specific equipi.ient of the whale-finding or fish-finding types to the exceptions
listed bj name in the Interpretative Note. With this approach there was no risk
of freeing certain equipment in one country without also freeing parallel
equipment in mother, unless the characteristics proved to be very different.
The German Delegation were therefore in favour of leaving the present definition
unchanged.
2. The UNITED KINGDOiui and UNITED STi.TES Delegations welcomed the with-
drawal of the German proposal and shared the views expressed above. The UNITED
STLTES Delegation suggested. that, in order to meet the German Delegation's
concern as to any possible change in the characteristics of the equipment
excluded, it might be advisable to record, either in the definition itself or
in the Interpretative Note, some form of wording along the following lines:
such exe:aption from embargo ci,~.lic s only to equil>mcnt having the same charac-
teristics as those which obtained at the time the equipment was judged to war-
rant listing herein. Some reference might also be made to the dccurient contai-
ning the technical characteristics of such equipment.
3. The FRLNCH Delegation regretted the German Delegation's decision,
while recognising that the discussion had shown exactly how difficult it was
to draw up a satisfactory technical definition.
-+ The JAP,iNESE Delegation also regretted the withdrawal of the German
proposal. They naturally withdrew their own suggestion to amend part (a) of
this proposal as recorded in W.P. 1510/3, but reserved the right to come back
to the matter. They also indicated that they would probably be submitting a
request to add certain equipment to the list of exclusions.
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SECT ET - 2
COCOM Document 3715-10/2
5. The GERM& Delegation further explained that they were resubmitting
technical details of the German Elac Lodar apparatus. Such details had already
been given during the 1958 List Review (see Addandum to W.P. 51), but these
had been incorrect and had led to the retention of this equipment under embargo.
Accurate data were now set out for the Committee's consideration in W.P. 1510/4.
6. The PLENCH and UNITED KINGDOM Delegations had no objection to
placing the abovementiined German equipment on the list of exclusions. The
CHAIlLvULN noted that this request, and any similar ones, would be examined by
the Committee in the normal course of its activities.
7. No objection was raised to the United States suggestion in para-
graph 2 above. The GERiu'u.N Deleg;aticn pros osod that, for ease of reference,
the technical data submitted and examined at the time of the 1958 List Review
(See i.P:. Nos. 19 and 51 of that year) should be reproduced in an official
Committee document.
8. The Appendix hereto contains all the technical data submitted
during the 1958 List Review by the German, Japanese and United Kingdom Delega-
tions, together with the corrected data submitted for the German Elac Lodar
apparatus in W.P. 1510/4.
CONCLUSION : The COidJiITTEE agreed that the definition of Item 1510 would
remain unchanged, with. tae following mote to bo aadeu to
Interpretative Dote;
"The exemptions from embargo stated herein apply only
to equipment having to same charact,::ristics as those:
which obtainee,. at t'io time t=ie equipment was j ud. ed to
warr;..nt listing h.:r. iii."
S E C IL E T
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SEC: i_T - 3 - APPENDIX to
COCOM Document 3715.102
UNITED KINGDOM KELVIN .F.I`ND HUGHES ECHO VHALE FINDER
(Data submitted in W.P. 19 of the 1958 List Review)
This is an echo ranging equipment designed for whale-hunting. The
equipment comprises the following four units, console unit (on bridge), motor
alternator (with control cabin6t), Pulse Generator and Receiver and Transducer
Hoist/Train system (with directing gear, dome and lifting motors.
2. A list of the .;rincipal design and performance characteristics is
given below:
a) Operating frequency: 1-'r Kc/`s or 25 Kc/s,
b) Power transmitted into the water: 200 watts.
c) Horizontal and vertical beamwidths of the transducers: the total
beam anb les to half Dower at 14 Cc/s are horizontal 15?, verti-
cal 13?, 36? or 50?, and at 25 Kc/s horizontal 8? vertical 1.4?,
31? or 480-
d) Form of streamlined housing in which the transducer is placed.
J streamlined casing consisting of top and bottom castings be-
tween which are arranged horizontal frames. A thin, sound-
transparent, staybrite-steel sheet is attached to the frames.
(The dome is a copy of one used in pre-war British Asdic sets.)
e) Method by which the transducer is trained, tilted, raised or
lowered: the transducer is rotated by a training motor drive
which is controlled from the bridge console. The beam of the
14 Kc/s transducer is fixed in the horizontal plane and that of
the 25 Kc/s transducer is permanently tilted 22 - 1/2? below the
horizontal plane. The dome and transducer are raised or lowered
as a single unit by a 2 h.p. D.C. motor which drives the raise/
lower screw rods.
f) Details of any stabilisation in bearing of the transducer: the
transducer is automatically stabilised in bearing from the ship's
gyro-compass.
Details of any type of automatic searching sweep for finding a
shoal or estimating its extent: Nil.
h) Means of displaying and/or processing the echo data: the data
are displayed on a triple pen echo-sounding recorder using; a
potassium iodide gaper, and are not processed in any way.
i) Details of transducer construction: the transducer is a double
faced macnotostriction type, 15 inches wide and 15 inches high,
one side 25 Kc/s and the other 14 Kc/s. It is made up of hori-
zontal packs of nickel star.7pines which can be switched so as to
provide the various vertical beam angles. The efficiency of the
transducer is between 45 and 50'o.
S E C B. E T
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SECRET - 4 - APPENDIX to
COCOM Document 3715,10/2
UNITED KINGDOM KELVIN .AND HUGHES FISHER .AN'S J SDIC
Data submitted in W.P. 19 of the 1958 List Review/,
This is a combined echo rwn,inf/echo sounding equipment designed
for mid-water fish shoal detection. It is suitable for all types of fishing
vessels of maximum speed up to 10 knots. The equipment cornsrises three units
Wheelhouse control Unit (with separate loudspeaker), Hull Unit (with training
and housing mechanisia, and a transducer) and a convertor.
2. A list of the principal design and performance characteristics is
given below:
a) Operating frcquQncy: 50 Kc/s.
b) Power transmitted into the water: BOO watts.
c) Horizontal ,nd vertical eamwidths of the transducers: the total
bears angles to half power are horizontal 100 and vertical 101 or
200.
d) Form of streamliLneu. housing in which the transducer is placed:
None.
e) .sthod by which the trans,.:ucer is trained, tilted, raised or
lowered: the transducer is rotated by an electric motor with
suitable reduction t earin6; rrlc-untod on top of the training shaft.
The bear, of the transducer is permanently tilted at 50 below the
horizontal plane. The transducer assenbly and training shaft
are lowered and retracted by an electric rotor and chain drive.
In the raisG1 position the transducer is close up to the shipts
hull.
f) Details of any stabilisatic.n in bearing of the transducer: None,
as the ships in which the set is fitted do not have a gyro-core-
pass.
g) Details of any type of autorlatic searching sweeping for finding
a shoal or estirlating its extent: sweeping is by manual control
or automatically over a 900 Sector in 50 steps. When either
limit bearing is reached the direction of stepping is automa-
tically revrsed.
h) ivieans of disl1ayinU and/or processing the echo data: the data
are displayed on a triple lien echo-soundin{; recorder using a
j;otassiur:i io_,ido paper, and are not processed in any way.
i) Details of transducer construction: the transducer is a magneto--
striotion tyy>e resonant at 50 Kc/s and is 6" wide and 9" high.
It coriprises nine horizontal packs of nickel stai:lpin gs. Tape-
ring of the pack windings is used to reduce side lobes. The
efficiency of the transducer is about 4C%.
S E C R E T
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LPPENDIX to
COCOir1 Document L~0/2
JAPi1NESE NIPPON .1,08EN K.K. COiuTLNY SIMPLIFIED SONAR
(Data submitted in tid.P. 51. of the 1958 List Review)
This equipLent has been developed by the fishing boat laboratory,
1 .inistry of AA ,7. and Forestry, Tokyo, japan and will be produced by the
Nippon usen K.K. Company.
Given belows
. list of the l.rincipal desi-n and performance characteristics i,
a) Operating frequency: 200 Kc/s.
b) Power transmitted into the water: 600 watts.
c) Horizontal and vertical beatiwidths of the transducers: 3? hori-
zontal, vertical ?
d) Form of streai.ilined housing in which the transducer is placed:
streai.ilined casing; 6" in diameter.
e) iiothod by which the transducer is trained, tilted, raised or
lowered: the transducer is trained by an electric motor. The
tilt may ae controlled from 0 to 90?.
f) Details of any stabilisation in bearing of the transducer: no
stabilisation.
g~ Details of any type of automatic searching sweep for finding a
shoal or est:i.i.atinu its extent: automatic sweeping over an arc
from 0 to -r5, 90 or 180?. irate of sweeping 10?/ per second.
h) iua--eans of displaying and/or processin; the echo data: data are
displayed by a flan position indicator on a cathode ray tube.
i) Details of transducer construction: the transducer consists of
barium titanate ceramics in a small rubber case filled with
castor oil. The efficiency is not known.
S E C R E T
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SECRET - 6
given below:
APPENDIX to
COCClaf Do cumen T15.10/2
GERMAN ATLAS 10ALE FINDER
(Data submitted in l.P. 51 of the 1958 List Review)
li list of the principal ('.esiL,rn and performance characteristics is
a) Operating fr(equency: 21.4 Kc/s
b) Power transmitted into the water: 500 watts (20 to 100 n/S).
c) Horizontal and vertical beamwidths of the transducers: 15? in
both horizontal and vertical planes.
d) Form of streamlined housing in which the transducer is placed:
streamlined housing; 610 .:rat. long and 334 mm. wide.
e) Method by which the transducer is trained, tilted, raised or
lowered: the transducer is trained, raised and lowered by an
electric motor but cannot be tilted downwards.
f) Details of any stabilisation in bearin.- of the transducers: Nil,
g) Details of any type of automatic searching sweep for finding; a
shoal or estimating its extent: Nil.
h) means of displaying and/or processing the echo data: Cathode ray
tube display is employed and a "sum and difference" method is
used in both horizontal and vertical planes. An aural display
is also available. The range scale extends out to 2,000 yds.
i) Details of transducer construction: the transducer is a mane-
trostriction type, e::.?l ying 12+4 elements. The total working
face is 500 sq.crt.
SEC hET
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-7-
APPENDIX to
COCCIVI Documenjl5.1912
given below:
GERlLLN ELAC LODAR AND ELAC KLEIN LODAR
(Data submitted in W.P. 51 of the 1958 List Review)
list of the principal design and 1.erformance characteristics is
a) Operating frequency: 15 to 30 Kc/s, usually 20 Kc/s.
b) Power transmitterl into the water: the C1-nSTOR, BELLATkIC and
iiLTAIR transmitter/receiver units for an output into the trans-
ducer of 165 watts and .EiiLCTUhUS, DENEB and ENIF of 1200 watts.
c) Horizontal and vertical beauwid.ths of the transducers: approxi-
r..ately 15? in both horizontal and vertical planes.
d) Foriai of streamlined housing in which the transducer is placed:
i) either spherical or streamlined case (Klein-Lollar).
(ii) rectane.;ular form (Elac Lollar).
e) Method by which the transducer is trained, tilted, raised or
lowered: the transducer is rotated by an electric motor (Mac
Lodar), hand operation (Klein-Lodar) and tilted by hand opera-
tion (Klein--Lollar) fixed tilt 12? (Elac Lodar) hand raising and
lowering; (Klein-Lodar) and by power (Elac Lollar).
f) Details of any stabilisation in bearing of the transducer:
stabilisaticn in azimuth (Elac Lodar)n
g) Details of any type of autonatic searching sweep for finding a
shoal or estimatin6 its extent: automatic search, extent of
shoal determined by "cut-offs" (Elac Lollar).
h) deans of displaying and/or processing the echo data: audio and
visual display on chemical recorder (both Elac and Klein Lodar).
Maximum range scale is 11,UCO yards on the Elac Lollar.
i) Details of transducer construction: the transducer is magneto-
strictive in both cases, 186 mm. wide and 382 mm. lone (Elac
Lodar) and 160 mm. wide and 280 mr.1. lone (Klein Lodar).
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SECRET - 8 - APPENDIX to
C0C0M Document 3715.10/2
GERIVLbN EL.tiC LODLR
(Data submitted in~,.P. 19104, of the 1959 List Review to
re-'place incorrect data given durin,,; the 1958 List iteview)
given below:
L list of the 1)rincipal dc, si ;n and ,performance characteristics is
a) 0poratin fr~,qucncy: 20 Kc/s.
b) Power transmitted into the water: a;;_rcximately 45C watts.
c) Horizontal and vertical beauwidths of the transducers: 27? and
170 respectively
d) Form of strea,:ilined housin6 in which the transducer is placed:
nil
e) Idethod by which the transducer is trained, tilted, raised or
lowered: trained by hand or electric motor (1.zl? per second)
raised and lowered by hand or electric motor, no tilting.
f) Details of any stabilisation in bearing of the transducer: nil
g) Details -f any type of automatic searching sweep for finding a
shoal or estimating its extent: aut.mati.c sweep over sectors of
90?.
h) Means of disp1ayin;; and/or processing the echo data: chemical
recorder and aural, no other processing.
i) Details of transducer construction: ma,;notostrio tive (nickel)
transducer size 140 mm. by 225 nn-
S E C R E T
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