resolution a.333(ix) adopted on 12 november 1975 ... · resolution a.333(ix) adopted on 12 november...

RESOLUTION A.333(IX) adopted on 12 November 1975 RECOMMENDATIONS RELATED TO CHAPTER IV OF THE INTERNATIONAL

CONVENTION FOR THE SAFETY OF LIFE AT SEA

INTER-GOVERNMENTAL MARITIME CONSULTATIVE ORGANIZATION

ASSIJIIBLY .... 9th session Agenda iten 7(c)

Distr. GIIrTEI'JUJ

A IX/Ees.335 10 Decenbe~ 1975 Original~ EI:TGLISII

IMCO

1IBS01UTI0l-T Ao 335(IX) adopted 011 12 Novenbex 1975

11.ECOMHI~IDATIOI:TS IIBLAT1.2lD TO CII!J?TEi: DT OF TIIC IlITEifffATIOITAL COITVEHTION ron ~1IIE SL.FlJTY OF Lll't; L.T SEA

TIIE ll.SSEIIDLY ' .

HECOGIUZIIJG the neec1 to ir.1prove safety of life at sea?

HOTTITG li.rticle 16(i) of the :mco Oonverrt.Lon concernfng tho functions of the li.ssenbly,

HAVING C01-TSIDEJ.1l'TD the l~epoi--t of the Hari tine So.fety Cormi ttee on its

thirty-second session ccncezrung aaondnent.a to the :provisions of tho International Convention for the S~foty of Life at Sea, 1960, as well as

the Ilcpo:rt of the Cor:ni tteo on its thirty-thirc1 session,

lillOI1TS neasures Lirtended to strengthen and/ or iwprove the cffecti veness

of certain provisions of Chc.pter ·rv of the International Convention for th0 Safety of Life at Sen, 1960 as follows~

(i) the carriage of raclioteleDhone operators on ships between 500 and

1,600 sTt equipped with radiotelephony only (Regulation 7(a)), the te:rt of whd oh is n.t 1'.i1.111e:: I to this Resolution~

(ii) the o.ini!Jur.J. nornal ranee of nnin and reserve transnitters

(Heeulation 9(g)), the text of which is at f.JU1e:::<: II to this

nosolution~

(iii) tho inclusion in the ractictcleera.ph installation of facilities for radiotelephony tra:nsnission nnd reception on the radiotelephone

distress fre~uency 2182 ldiz (Regulation 9), the text of which is given at 1:..nne:c III to this 11esolution;

For reasons of economy, this document is printed in a limited number. Delegates are kindly asked to bring their copies to meetings and not to request additional copies.



1 i i

A De/nos. 3 35 - 2 -

(iv) an eA-tension of the provisions concerning tho nininun noroal

rm!ge of radiotolc~hone tra.nsnitters (RecuJ.ation 15(c)), the text of which is c;iven nt f .• rinex rv to this Hesolution?

TIECOT-1IIENDS that all Honber Governoents put into effect as soon as ~ossible the provisions of these necor10endations,

IlNITES govcrnoents to propose, at an nl)l)ro1)l;•ia.te tine, relevant

anendnenbs to the c.:pl)ropriate He0rulctions of Chapter rv of the Internn.tional Convention for the Safety of Life ~t Sea, 1974.

I1EC01Ii:1CNDATIOI{ OH Trill Cl:J.1.RIAG:C OF PJillIOTELEPIIONE OPERAT0l1S ON SHIPS ]ET\JEEN 500 MID 1, (J)O GlLT EQUIPPED WITII

lliillIOT.CLEPIIOHY ONLY (relevant to TI.eiiuJ..ation 7(a), Chapter IV or· the.

International Convention for the Safety of Life at Sec., 1960)

1. Each ship which is fitted ui th a rac1iotolephone station in accordance with

llec,~ation 4 of Chapter ri shall for scfcty purpoaee , while at eea, nadrrtctn continuous watch on the :co.dioteJ.e:_)ho110 c1istross frequency in the place on boru:d

fron. '\'rhich the ship is usua . .lly no.vigo..tec1, by use of a ro.diotele])ho11e distress

f:ceq_uency watch receive=, using c Loudapeakez , c. filtered Loudspoaker or rac1iotelephone auto alam.

2. Ships non+Lonod in pazagraph 1 above shall cc.,rry rn.diotelophone

operators holdinG nn ap~ropriate ccxtificate for ro.diotele~hony (who oay be

the naster, 011 officer or a. neober of the crew) as foliows:

(a) shi~s of 300 tons 0JToss to1u~~ and upwards but less thc.n 500

tons GToss to1mncc, at Leaat one 01x3rn·tor~

(b) ships of 500 tons gross toru1oec and upwards but lens tho.1.1

J.f>OO tons e;ross to1111n.co, at least two opcrcbcrn, If n ship cc.riios one ra.diotelephone ol)erator exc'Luaf vely enp'Icyed for

duties related to radiotelephony, a second operator is not

oblieatory.



- 3 - A IX/Res. 335

ANNEX II

RECOMMENDATION ON THE MINIMUM NORMAL RANGE OF MAIN AND RESERVE TRANSMITTERS

(relevant to Regulation 9(g), Chapter IV of the International Convention for the Safety of Life

at Sea, 1960)

The ma.in and reserve ·transmitters shall, when connected to the main aerial, have a m.i.niL l'W!l normal range as speclfied below, that is to say, they must be

capable of transmitting clearly perceptible signals fron ship-to-ship by d.a.y and under noroa.l conditions and circUDOtcinces over the specified ra.ngcJ/. (Clearly perceptible signals will norcally be received if the fil.lS value of the field strength at the receiver ie ~t lenst 50 oicrovolts per netrc.)

f l . I All passenger ships, and o~rgo ships of ; 1,600 tons gross tonne.go and upw~rds ••••••••• .! I Cargo ships balm., 1,600 tons groos tonnage ••• I i ;.,__ __.,i ......, _

-, I~ no~l ra~ in· Eil'co I Main Reserve ;

tro.nsmi ttor transoi ttcr l 100 l

i 150

100 75

y In the absence of a diroot c.eo.surenont of tho field strength the following data. n'ly ba used as a guide for a.pproxim toly detemining the noroal ronc,·c: A. In the caee of aerials other than aclf-m.1.pporling typoo:

N oroal I.'Ollul'l'Q in Dileo

200 175 150 125 100 75

~e-anporcs~~- j I 12a i I 102' I

76 , l 58 j ~

45 r 34

* The product of the distance (in tietrea) fron the highest :part of the aerial to the deepest load water-line and the aerial current (in an!)cres).



PBARRETO

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PBARRETO

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A JX/Res.335 -4-

The values given in the second coluon of the table cor.rospond to an average value of the ratio

effective aerial height _ 0 47 mxinun aerial height - •

This ratio varies with local conditions of the norial o.nd. nay vary between about 0,3 and 0.7.

n. In the oa.se of self-supporting tmnanitting aerials:

Norrnl range in nautical Diles Mstro-o.operes~H:-

200 175 150 125 100 75

305 215 150 110 85 55

-;:-::- '11he product of the disto.nce (in oetros) froo the highest po.rt of the aerial to the deepest load water-line and the current (in aopercs) nonsured nt the ba.oo of the radiating portion of the aerial. The values given in the second colUDll arc oo.sod on the propagation curves criven in CCIR RecoJJaond.ation 368-2 as well as the oethod, e:x:perincntal.roaulte o.nd calculations in ccm Report 502-1 a.nc1 Opinion 43- J.. 'l1ho nooeano.r-J vnluo

-of ne~:res varieo consic.era.~)ly ,.,:t~h looo.l 001ti tions of -bhe aerial.



-5- A IX/Res.335

AlINP:JC III

RECCIMMEmlATION CIN' THE ntCLU'SICIN Dl ~ 1WlIO'l'ELmll.A.PH llfB'J'AI,I,AfiON OF FACIL!fiES'· FOR H1illIOT1jLTr?H01TY TrJJIS!1ISSI01'T AfID RECEPTION OH 2102 kHz

(relevn.nt to 1legulation 9, Chapter rv of the IntornAtional Convention for the So.fety of Life at Sea, 1960)

1. The rodiotelcGTODh installation shall includo facilities for mdiotclephony

trru1soission and reception on the radiotelephone dist1-ess frequency 2182 k:Hz.

This requironent my be fulfillod by includin6 such faclli·tios in the min and/ or reserve installo. tio11 and/ or other installed equipnent. The tr<l..nsni tter :power an<.l

receiver sensitivity or the ra.diotelephony part of the ilismllntion shall conply

uith po.mBrB,phs (c)(i) and (f) of Ile6ulo.tion 15 respectively if that part io

fitted 24 nonths or lo.tcr after the adoption of this Resolution; .for installations fitted prior to tho end of tlnt :period, mich tra.nsnitter power and receiver ccnsitivity·sooll be as dcteminod by the l.d1.1inistmtion. The loca'liio~ and other

conditions of· the radiotelo:phony facilities roquircd by thio Tiegulo.tion shall be

o.s dctcroil.1ed by the ldninistration, oxcopt when they fom :part of tho mil1 and/or rcsorvo radictolae-raph iusto.llntion.

2. Tho radiotelephone tro11snitting facility required by j_Xi,ragrn,ph 1 abovo Dlmll,

if insfa.lled 24 norrthe or later o.fter the adoption of this H.coolution, be fi ttod

with an o.utomtic device for genemting tho r~diotelephonc alo.m ciennls oo

dosicrncd o.o to prevent activation by Disto.kc, and conplyil\'! with the rcquironc11ts

of J.)O.ro~ph (o) of TiecuJntion 15 of Chapter rv. The device ahal.L be ccpab'l,o of boinc taken out of opo:ro.tion at o.ny tine in order to :pomit tho i.IJnediato

t:ranonission of a distress nessacre; in the co.oc of installations fitted prior to

tho end of thn.t reriocl, the fittincr of nutono.tio devices for. ccncmtinc tho

ro.diotolephonc nlo.m sicrm,1 shall be as dete:rnined by the Lclninistrotion.

3, } .. rrru1c,r.renents shall be node to check periodically the proper functioning of

the autona tic device for GCncra tine the :ro.diotelophone alnrr.1 oieno,1 011. frequencies

other tmn the ro.diotolephono distrcsn frequency uninG· a. suit~bl0 artificinl norio.1.

ta: o:::cception slnll be nado far :radiotelephone ooercrency equipnent havina only the

dictress frequency 21e2· kllz, in which caoc n ouita.blc ortificinl o.orial sha.11 be

enployed.

H~: Wm.lot all ronsonablG stops shall be taken to min ta.in the appaza tus in an efficient ool1dition, mlfunction of the ro.diotelephone tro.nsnitting fo.cili ties required by this Iloaolution, sbo.11 not be ocnoidcrec1 as mkil10 tho ship unseaworthy or o.s n roason for delo.yina' the ship in ports uhorc repair facilities nra not reo.dily o.w.ilo.blo.



A IX/Res. 3 35 -6-

I '

RF,COMMENDAfi CIN (IN' MINIMDM NORMAL RANGE OF RADIOTELEPHONE TRANSMITTERS

(relevo.nt to Reculntion 15(0), Chapter IT of the Interno.tioml Convention £or the Snfoty of Life at Sen, 1960)

~ '-i ,.',

1. In the case of oarcro ships of 300 tons gross tonnage and uJ.)W8:rds but less than 1,600 tone gross tonnD.ee tho transnitter shall have a DiniDun nomo.1 raneo of 150 niles, i.e. it sho.11 be capable of tra.nsnitting cleo.rly peroeptiblo sicna,ls fron ship to ship by day nnd under norna.l conditions and oircur.latanoes over this range-l}. ( Clearly percopti blo sie;nal~ will nornnlly be recei vod if the TIMS value of tho field strenrrth :produced nt the rcccivor by an umodulated carrier is at least 25 nicrovolts per netrc for l3 and A3H cnissions.)

2. In the case of existing installations usint! the class of enission A3 on carcro ships of 300 tons gross tonnacc and upwards but less than 500 tono cross tonnage, the tmnsm.tter smll mve n ninioun norno.1 ranee of at lonst 75 Diles.

·,.- In tho absence of field strength oensurcoente, it my be a.ssunocl thn. t this range will be obtainqd by a power in the nerio.1 of 15 wa.tte (unnodulnted carrier) with an aerial officioncy of 27 par cont for A3 oniesions or 60 wo. tto peak envalopo power for .A3H eoissions when 100 per cent noduka tee. by o sfn8'lc sinusoidal oeoillation.



resolution a.333(ix) adopted on 12 november 1975 ... · resolution a.333(ix) adopted on 12 november...

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