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- .rs
- .\" Troff code generated by TPS Convert from ITU Original Files
- .\" Not Copyright ( c) 1991
- .\"
- .\" Assumes tbl, eqn, MS macros, and lots of luck.
- .TA 1c 2c 3c 4c 5c 6c 7c 8c
- .ds CH
- .ds CF
- .EQ
- delim @@
- .EN
- .nr LL 40.5P
- .nr ll 40.5P
- .nr HM 3P
- .nr FM 6P
- .nr PO 4P
- .nr PD 9p
- .po 4P
-
- .rs
- \v | 5i'
- .LP
- \s9\fBMONTAGE:\ \fBREC.\ G.652 AU DEBUT DE CETTE PAGE\fR
- .RT
- .sp 2P
- .LP
- \v'27P'
- \fBRecommendation G.653\fR
- .RT
- .sp 2P
- .ce 1000
- \fBCHARACTERISTICS OF A DISPERSION\(hySHIFTED SINGLE\(hyMODE\fR
- .EF '% Fascicle\ III.3\ \(em\ Rec.\ G.653''
- .OF '''Fascicle\ III.3\ \(em\ Rec.\ G.653 %'
- .ce 0
- .sp 1P
- .ce 1000
- \fBOPTICAL FIBRE CABLE\fR
- .ce 0
- .sp 1P
- .ce 1000
- \fI(Melbourne, 1988)\fR
- .sp 9p
- .RT
- .ce 0
- .sp 1P
- .LP
- The CCITT,
- .sp 1P
- .RT
- .sp 1P
- .LP
- \fIconsidering\fR
- .sp 9p
- .RT
- .PP
- (a)
- that dispersion\(hyshifted optical fibre cables are going to be used widely
- in telecommunication networks;
- .PP
- (b)
- that the foreseen potential applications may require
- several kinds of single\(hymode fibres differing in operation wavelength
- geometrical and optical characteristics, and attenuation dispersion and
- other transmission characteristics,
- .sp 1P
- .LP
- \fIrecommends\fR
- .sp 9p
- .RT
- .PP
- a dispersion\(hyshifted single\(hymode fibre which has the
- zero\(hydispersion wavelength in the 1550 nm wavelength region and which is
- optimized for use at wavelengths around 1550 nm. This fibre may also be
- used at around 1300 nm subject to the constraints which are outlined in
- this
- Recommendation.
- .bp
- .PP
- Its geometrical, optical and transmission parameters are described below.
- .PP
- The meaning of the terms used in this Recommendation are given in
- Annex\ A to Recommendation G.652 and the guidelines to be followed in the
- measurements to verify the various characteristics are indicated in Annex\ B
- to Recommendation G.652. The characteristics of this fibre and the relevant
- values will be refined as studies and experience progress.
- .RT
- .sp 2P
- .LP
- \fB1\fR \fBFibre characteristics\fR
- .sp 1P
- .RT
- .PP
- Only those characteristics of the fibre providing a minimum
- essential design framework for fibre manufacture are recommended in \(sc 1. Of
- these, the cabled fibre cut\(hyoff wavelength may be significantly affected by
- cable manufacture or installation. Otherwise, the recommended characteristics
- will apply equally to individual fibres, fibres incorporated into a cable
- wound on a drum, and fibres in an installed cable.
- .PP
- This Recommendation applies to fibres having a nominally circular mode field.
- .RT
- .sp 1P
- .LP
- 1.1
- \fIMode field diameter\fR
- .sp 9p
- .RT
- .PP
- The nominal value of the mode field diameter at 1550 nm shall lie within
- the range of 7.0 to 8.3 \(*mm. The mode field diameter deviation should
- not exceed the limits of \(+- | 0% of the nominal value.
- .PP
- \fINote\ 1\fR \ \(em\ The choice of a specific value within the above range is
- not necessarily associated with a specific fibre design.
- .PP
- \fINote\ 2\fR \ \(em\ It should be noted that the fibre performance required
- for any given application is a function of essential fibre and systems
- parameters, i.e., mode field diameters, cut\(hyoff wavelength, chromatic
- dispersion, system
- operating wavelength, and bit rateB/Ffrequency of operation, and not primarily
- of the fibre design.
- .PP
- \fINote\ 3\fR \ \(em\ All the above needs further study.
- .RT
- .sp 1P
- .LP
- 1.2
- \fICladding diameter\fR
- .sp 9p
- .RT
- .PP
- The recommended nominal value of the cladding diameter is\ 125\ \(*mm.
- The cladding deviation should not exceed the limits of\ \(+-\ 2.4% (\(+-\
- 3\ \(*mm).
- .PP
- For some particular jointing techniques and joint loss requirements, other
- tolerances may be appropriate.
- .RT
- .sp 1P
- .LP
- 1.3
- \fIMode field concentricity error\fR
- .sp 9p
- .RT
- .PP
- The recommended mode field concentricity error at\ 1550\ nm should
- not exceed\ 1\ \(*mm.
- .PP
- \fINote\fR \ \(em\ For some particular jointing techniques and joint loss
- requirements, tolerances up to\ 3\ \(*mm may be approrpriate.
- .RT
- .sp 2P
- .LP
- 1.4
- \fINon\(hycircularity\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 1.4.1
- \fIMode field non\(hycircularity\fR
- .sp 9p
- .RT
- .PP
- In practice, the mode field non\(hycircularity of fibres having
- nominally circular mode fields is found to be sufficiently low that propagation
- and jointing are not affected. It is therefore not considered necessary
- to
- recommend a particular value for the mode field non\(hycircularity. It is not
- normally necessary to measure the mode field non\(hycircularity for
- acceptance purposes.
- .RT
- .sp 1P
- .LP
- 1.4.2
- \fICladding non\(hycircularity\fR
- .sp 9p
- .RT
- .PP
- The cladding non\(hycircularity should be less than\ 2%. For some
- particular jointing techniques and joint loss requirements, other tolerances
- may be appropriate.
- .RT
- .sp 1P
- .LP
- 1.5
- \fICut\(hyoff wavelength\fR
- .sp 9p
- .RT
- .PP
- Under study.
- .RT
- .sp 1P
- .LP
- 1.6
- \fI1550\ nm bend performance\fR
- .sp 9p
- .RT
- .PP
- The loss increase for 100 turns of fibre, loosely wound with
- a\ 37.5\ mm radius and measured at 1550\ nm, shall be less than\ 0.5\ dB.
- .bp
- .PP
- \fINote\ 1\fR \ \(em\ A qualification test may be sufficient to ensure
- that this requirement is being met.
- .PP
- \fINote\ 2\fR \ \(em\ The above value of 100\ turns corresponds to the
- approximate number of turns deployed in all splice cases of typical repeater
- span. The
- radius of 37.5\ mm is equivalent to the minimum bend\(hyradius widely accepted
- for long\(hyterm deployment of fibres in practical systems installations
- to avoid
- static\(hyfatigue failure.
- .PP
- \fINote\ 3\fR \ \(em\ If for pratical reasons fewer than\ 100 turns are
- chosen to implement this test, it is suggested that not less than\ 40 turns,
- and a
- proportionately smaller loss increase be used.
- .PP
- \fINote\ 4\fR \ \(em\ If bending radii smaller than\ 37.5\ mm are planned to be
- used in splice cases or elsewhere in the system (for example, R\ =\ 30\
- mm) it is suggested that the same loss value of\ 0.5\ dB shall apply to
- 100 turns of fibre deployed with this smaller radius.
- .PP
- \fINote\ 5\fR \ \(em\ The 1550\ nm bend\(hyloss recommendation relates to the
- deployment of fibres in practical single\(hymode fibre installations. The
- influence of the stranding\(hyrelated bending radii of cabled single\(hymode
- fibres on the loss performance is included in the loss specification of
- the cabled
- fibre.
- .PP
- \fINote\ 6\fR \ \(em\ In the event that routine tests are required, a small
- diameter loop with one or several turns can be used instead of the 100\(hyturn
- test, for accuracy and measurement ease of the 1550\ nm bend sensitivity. In
- this case, the loop diameter, number of turns, and the maximum permissible
- bend loss for the several\(hyturn test, should be chosen, so as to correlate
- with the 0.5\ dB loss recommendation of the\ 37.5\ mm radius 100\ turn
- functional test.
- .RT
- .sp 2P
- .LP
- 1.7
- \fIMaterial properties of the fibre\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 1.7.1
- \fIFibre materials\fR
- .sp 9p
- .RT
- .PP
- The substances of which the fibres are made should be indicated.
- .PP
- \fINote\fR \ \(em\ Care may be needed in fusion splicing fibres of different
- substances. Provisional results indicate that adequate splice loss and
- strength can be achieved when splicing different high\(hysilica fibres.
- .RT
- .sp 1P
- .LP
- 1.7.2
- \fIProtective materials\fR
- .sp 9p
- .RT
- .PP
- The physical and chemical properties of the material used for the fibre
- primary coating, and the best way of removing it (if necessary) should
- be indicated. In the case of a single jacketed fibre similar indications
- shall be given.
- .RT
- .sp 1P
- .LP
- 1.8
- \fIRefractive index profile\fR
- .sp 9p
- .RT
- .PP
- The refractive index profile of the fibre does not generally need to be
- known: if one wishes to measure it, the Reference Test Method in
- Recommendation\ G.651 may be used.
- .RT
- .sp 2P
- .LP
- \fB2\fR \fBFactory length specifications\fR
- .sp 1P
- .RT
- .PP
- Since the geometrical and optical characteristics of fibres given in\ \(sc\
- 1 are barely affected by the cabling process, \(sc\ 2 will give
- recommendations mainly relevant to transmission characteristics of cabled
- factory lengths.
- .PP
- Environmental and test conditions are paramount and are described in the
- guidelines for Test Methods.
- .RT
- .sp 1P
- .LP
- 2.1
- \fIAttenuation coefficient\fR
- .sp 9p
- .RT
- .PP
- Optical fibre cables covered by this Recommendation generally have attenuation
- coefficients in the\ 1550\ nm region below\ 0.5\ dB/km. When they are intended
- for use in the 1300\ nm region, their attenuation coefficient in that region
- is genrally below\ 1\ dB/km.
- .PP
- \fINote\fR \ \(em\ The lowest values depend on the fabrication process, fibre
- composition and design, and cable design. Values in the rage 0.19\(hy0.25\
- dB/km in the 1550\ nm region have been achieved.
- .bp
- .RT
- .sp 1P
- .LP
- 2.2
- \fIChromatic dispersion coefficient\fR
- .sp 9p
- .RT
- .PP
- Under study.
- .PP
- \fINote\ 1\fR \ \(em\ The maximum chromatic dispersion coefficient of single\(hymode
- fibres covered in this Recommendation shall be:
- .RT
- .ce
- \fBH.T. [T1.653]\fR
- .ps 9
- .vs 11
- .nr VS 11
- .nr PS 9
- .TS
- center box;
- cw(60p) | cw(72p) .
- Wavelength (nm) {
- Maximum chromatic
- dispersion coefficient
- [ps/(nm\(mukm)]
- }
- _
- .T&
- cw(60p) | cw(72p) .
- 1525\(hy1575 3.5
- .T&
- cw(60p) | cw(72p) .
- 1300 nm region Under study
- _
- .TE
- .nr PS 9
- .RT
- .ad r
- \fBTable [T1.653], p. \fR
- .sp 1P
- .RT
- .ad b
- .RT
- .PP
- \fINote\ 2\fR \ \(em\ The value of 3.5\ ps/(nm | (mu | m) allows for attenuation
- limited section lengths at 560 MbitB/Fs, using suitable multi\(hylongitudinal
- mode lasers and adequate line coding.
- .PP
- \fINote\ 3\fR \ \(em\ For higher capacity (larger than 560 MbitB/Fs) or longer
- length systems, operation closer to the zero\(hydispersion wavelength is
- required (unless single\(hylongitudinal mode laser diodes are used). Additional
- fibre
- parameters may then have to be specified (such as zero\(hydispersion wavelength,
- dispersion\(hyslope, etc.). Further studies are needed to identify these
- parameters.
- .PP
- \fINote\ 4\fR \ \(em\ It is not necessary to measure the chromatic dispersion
- coefficient on a routine basis.
- .RT
- .sp 2P
- .LP
- \fB3\fR \fBElementary cable sections\fR
- .sp 1P
- .RT
- .PP
- An elementary cable section usually includes a number of spliced
- factory lengths. The requirements for factory lengths are given in\ \(sc\
- 2 of this Recommendation. The transmission parameters for elementary cable
- section must take into account not only the performance of the individual
- cable lengths but also amongst the other factors, such things as splice
- losses and connector
- losses (if applicable).
- .RT
- .sp 1P
- .LP
- 3.1
- \fIAttenuation\fR
- .sp 9p
- .RT
- .PP
- The attenuation \fIA\fR of an elementary cable section is given
- by:
- \v'6p'
- .RT
- .sp 1P
- .ce 1000
- \fIA\fR =
- @ pile { fIm\fR above sum above \fIn\fR~=1 } @ \fIa\fR\d\fIn\fR\u\(mu \fIL\fR\d\fIn\fR\u+ \fIa\fR\d\fIs\fR\u\(mu \fIX\fR + \fIa\fR\d\fIc\fR\u\(mu
- \fIy\fR
- .ce 0
- .sp 1P
- .LP
- .sp 1
- .LP
- where
- .LP
- \fIa\fR\d\fIn\fR\u =
- attenuation coefficient of \fIn\fR th fibre in
- elementary cable section,
- .LP
- \fIL\fR\d\fIn\fR\u =
- length of \fIn\fR th fibre,
- .LP
- \fIm\fR =
- total number of concatenated fibres in elementary
- cable section,
- .LP
- \fIa\fR =
- mean splice loss,
- .LP
- \fIX\fR =
- number of splices in elementary cable section,
- .LP
- \fIa\fR\d\fIc\fR\u =
- mean loss of line connectors,
- .LP
- \fIy\fR =
- number of line connectors in elementary cable section (if provided).
- .PP
- A suitable allowance should be allocated for a suitable cable
- marging for future modifications of cable configurations (additional splices,
- extra cable lengths, aging effects, temperature variations, etc.). The
- above
- equation does not include the loss of equipment connectors.
- .PP
- The mean loss is used for the loss splices and connectors. The
- attenuation budget used in designing an actual system should account for the
- statistical variations in these parameters.
- .bp
- .RT
- .sp 1P
- .LP
- 3.2
- \fIChromatic dispersion\fR
- .sp 9p
- .RT
- .PP
- The chromatic dispersion in ps can be calculated from the chromatic dispersion
- coefficients of the factory lengths, assuming a linear dependence on length,
- and with due regard for the signs of the coefficients and system source
- characteristics (see\ \(sc\ 2.2).
- .RT
- .ce 1000
- ANNEX A
- .ce 0
- .ce 1000
- (to Recommendation G.653)
- .sp 9p
- .RT
- .ce 0
- .ce 1000
- \fBMeaning of the terms used in the Recommendation\fR
- .sp 1P
- .RT
- .ce 0
- .PP
- Most of the definitions contained in Annex\ A to
- Recommendation\ G.652 are in principle applicable also to dispersion\(hyshifted
- fibre. Because of limited experience with this type of fibre, further study
- of the suitability of some definitions is needed.
- .sp 1P
- .RT
- .ce 1000
- ANNEX B
- .ce 0
- .ce 1000
- (to Recommendation G.653)
- .sp 9p
- .RT
- .ce 0
- .ce 1000
- \fBTest Methods for dispersion\(hyshifted single\(hymode fibres\fR
- .sp 1P
- .RT
- .ce 0
- .PP
- The present experience on dispersion\(hyshifted single\(hymode
- fibres is rather limited; therefore further study is needed on some Reference
- and Alternative Test Methods for this type of fibre. Nevertheless, most
- of the test methods described in Annex\ B to Recommendation\ G.652 are
- in principle
- applicable also to dispersion\(hyshifted fibres. Therefore, for this Annex,
- reference is made to the corresponding Test Methods of Annex\ B in
- Recommendation\ G.652; the specifics of each test procedure need further
- study. It should be noted that the working wavelength for\ G.653 fibres
- is in the
- 1550\ nm region.
- .sp 1P
- .RT
- .sp 2P
- .LP
- \fBRecommendation G.654\fR
- .RT
- .sp 2P
- .ce 1000
- \fBCHARACTERISTICS OF A 1550 nm WAVELENGTH LOSS\(hyMINIMIZED\fR
- .EF '% Fascicle\ III.3\ \(em\ Rec.\ G.654''
- .OF '''Fascicle\ III.3\ \(em\ Rec.\ G.654 %'
- .ce 0
- .sp 1P
- .ce 1000
- \fBSINGLE\(hyMODE OPTICAL FIBRE CABLE\fR
- .ce 0
- .sp 1P
- .ce 1000
- \fI(Melbourne, 1988)\fR
- .sp 9p
- .RT
- .ce 0
- .sp 1P
- .LP
- The CCITT,
- .sp 1P
- .RT
- .sp 1P
- .LP
- \fIconsidering\fR
- .sp 9p
- .RT
- .PP
- (a)
- that very low loss fibres are required in some
- telecommunication network applications;
- .PP
- (b)
- that the foreseen potential applications may require
- several kinds of single\(hymode fibres differing in:
- .LP
- \(em
- geometrical characteristics;
- .LP
- \(em
- operation wavelength;
- .LP
- \(em
- attenuation, dispersion and other optical
- characteristics,
- .PP
- (c)
- that Recommendations on different kinds of single\(hymode
- fibres can be prepared when practical use studies have sufficiently
- progressed,
- .sp 1P
- .LP
- \fIrecommends\fR
- .sp 9p
- .RT
- .PP
- a single\(hymode fibre which has the zero dispersion wavelength in
- the\ 1300\ nm wavelength region, which is loss minimized at a wavelength
- around\ 1550\ nm and which is designed for use in this region.
- .bp
- .PP
- The geometrical, optical and transmission characteristics of this fibre
- are described below.
- .PP
- The meaning of the terms used in this Recommendation are given in
- Annex\ A, and the guidelines to be followed in the measurements to verify the
- various characteristics are indicated in Annex\ B.
- .PP
- \fINote\fR \ \(em\ The characteristics of this fibre and the relevant values
- will be refined as studies and experience progress.
- .RT
- .sp 2P
- .LP
- \fB1\fR \fBFibre characteristics\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 1.1
- \fIMode field diameter\fR
- .sp 9p
- .RT
- .PP
- The nominal value of the mode field diameter at 1550\ nm shall
- be\ xx\ \(*mm. The mode field diameter deviation should not exceed the limits
- of\ \(+-\ 10% of the nominal value.
- .PP
- \fINote\fR \ \(em\ The value for xx has to be specified. A value of\ 10.5
- for\ xx is one possibility.
- .RT
- .sp 1P
- .LP
- 1.2
- \fICladding diameter\fR
- .sp 9p
- .RT
- .PP
- Under study.
- .FE
- The recommended nominal value of the cladding diameter is\ 125\ \(*mm.
- The cladding deviation should not exceed the limits of\ \(+-\ 2.4%
- (\(+-\ 3\ \(*mm).
- .RT
- .sp 1P
- .LP
- 1.3
- \fIMode field concentricity error\fR
- .sp 9p
- .RT
- .PP
- The recommended mode field concentricity error at\ 1550\ nm should
- not exceed\ 1\ \(*mm
- .
- .RT
- .sp 2P
- .LP
- 1.4
- \fINon\(hycircularity\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 1.4.1
- \fIMode field non\(hycirculatory\fR
- .sp 9p
- .RT
- .PP
- In practice, the mode field non\(hycircularity of fibres having
- nominally circular mode fields is found to be sufficiently low that propagation
- and jointing are not affected. It is therefore not considered necessary
- to
- recommend a particular value for the mode field non\(hycircularity. It is not
- normally necessary to measure the mode field non\(hycircularity for acceptance
- purposes.
- .RT
- .sp 1P
- .LP
- 1.4.2
- \fICladding non\(hycircularity\fR
- .sp 9p
- .RT
- .PP
- The cladding non\(hycircularity should be less than\ 2%. For some
- particular jointing techniques and joint loss requirements, other tolerances
- may be appropriate.
- .RT
- .sp 1P
- .LP
- 1.5
- \fICut\(hyoff wavelength\fR
- .sp 9p
- .RT
- .PP
- The cut\(hyoff wavelength values shall be between\ xxxx\ nm and\ yyyy\
- nm for \(*l\dc\u, and smaller than\ zzzz\ nm
- for \(*l\dc\\dc\u.
- .PP
- \fINote\fR \ \(em\ The values for xxxx, yyyy and\ zzzz have to be specified;
- values of 1350 for\ xxxx, 1600 for\ yyyy and 1530 for\ zzzz are one
- possibility.
- .RT
- .sp 1P
- .LP
- 1.6
- \fI1550 nm bend loss performance\fR
- .sp 9p
- .RT
- .PP
- Under study.
- .PP
- \fINote\fR \ \(em\ The performance of this fibre should not be worse than
- fibre designed to meet Recommendation\ G.653.
- .RT
- .sp 1P
- .LP
- 1.7
- \fIMaterial properties of the fibre\fR
- .sp 9p
- .RT
- .PP
- This is given in \(sc\ 1.7 of Recommendation\ G.652.
- .RT
- .sp 1P
- .LP
- 1.8
- \fIExample of fibre design guidelines\fR
- .sp 9p
- .RT
- .PP
- Supplement No.\ 33 gives an example of fibre design guidelines for matched
- cladding fibres used by one organization.
- .bp
- .RT
- .sp 2P
- .LP
- \fB2\fR \fBFactory length specifications\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 2.1
- \fIAttenuation coefficient\fR
- .sp 9p
- .RT
- .PP
- Optical fibre cables covered by this Recommendation shall have
- attenuation coefficients in the 1550\ nm region
- .
- .PP
- \fINote\fR \ \(em\ The lowest values depend on fabrication process, fibre
- composition and design, and cables design. Values of\ 0.15 to 0.20\ dB/km
- in the 1550\ nm region have been achieved.
- .RT
- .sp 1P
- .LP
- 2.2
- \fIChromatic dispersion coefficient\fR
- .sp 9p
- .RT
- .PP
- The maximum chromatic dispersion coefficient in the 1550\ nm
- wavelength region of single\(hymode fibres covered in this Recommendation shall
- be\ 20\ ps/(nm | (mu | m).
- .RT
- .sp 2P
- .LP
- \fB3\fR \fBElementary cable sections\fR
- .sp 1P
- .RT
- .PP
- As given in\ \(sc\ 3 of Recommendation\ G.652.
- .RT
- .ce 1000
- ANNEX A
- .ce 0
- .ce 1000
- (to Recommendation G.654)
- .sp 9p
- .RT
- .ce 0
- .ce 1000
- \fBMeaning of the terms used in the Recommendation\fR
- .sp 1P
- .RT
- .ce 0
- .PP
- Most of the definitions contained in Annex\ A to
- Recommendation\ G.652 are in principle applicable also to loss\(hyminimized
- fibre. Because of limited experience with this type of fibre, further study
- of the
- suitability of some definitions is needed.
- .sp 1P
- .RT
- .ce 1000
- ANNEX B
- .ce 0
- .ce 1000
- (to Recommendation G.654)
- .sp 9p
- .RT
- .ce 0
- .ce 1000
- \fBTest methods for loss\(hyminimized single\(hymode fibres\fR
- .sp 1P
- .RT
- .ce 0
- .PP
- The present experience on loss\(hyminimized single\(hymode fibres is
- rather limited; therefore further study is needed on some Reference and
- Alternative Test Methods for this type of fibre. Nevertheless, most of
- the test methods described in Annex\ B to Recommendation\ G.652 are in
- principle
- applicable also to loss\(hyminimized fibres. Therefore, for this Annex,
- reference is made to the corresponding Test Methods of Annex\ B in Recommendation\
- G.652; the specifics of each test procedure need further study. It should
- be noted
- that the working wavelength for\ G.654 fibres is in the 1550\ nm region.
- .sp 1P
- .RT
- .LP
- .sp 10
- .bp
- .sp 1P
- .ce 1000
- \v'12P'
- \s12PART\ II
- \v'4P'
- .RT
- .ce 0
- .sp 1P
- .ce 1000
- \fBSUPPLEMENTS\ TO\ RECOMMENDATIONS\ IN\fR
- .EF '% \ \ \ ^''
- .OF ''' \ \ \ ^ %'
- .ce 0
- .sp 1P
- .ce 1000
- \fBSECTION\ 6\ OF\ THE\ SERIE\ G\ RECOMMENDATIONS\fR
- .ce 0
- .sp 1P
- .LP
- .rs
- .sp 33P
- .ad r
- Blanc
- .EF '% \ \ \ ^''
- .OF ''' \ \ \ ^ %'
- .ad b
- .RT
- .LP
- .bp
- .LP
- \fBMONTAGE:\ \fR PAGE 118 = PAGE BLANCHE
- .sp 1P
- .RT
- .LP
- .bp
- .LP
- .EF '% Fascicle\ III.3\ \(em\ Suppl.\ No.\ 11''
- .OF '''Fascicle\ III.3\ \(em\ Suppl.\ No.\ 11 %'
- .ce
- \fBH.T. [1T1.11]\fR
- .ps 9
- .vs 11
- .nr VS 11
- .nr PS 9
- .TS
- center box;
- lw(342p) .
- \fBSupplement No. 11\fR
- .T&
- cw(342p) .
- {
- \fBDATA\ ON\ CABLE\ SHIPS\ AND\ SUBMERSIBLE\ EQUIPMENTS\ OF\ VARIOUS\fR
- \fB | OUNTRIES\fR
- }
- .T&
- cw(342p) .
- {
- \fI(Mar del Plata, 1968, amended at Geneva, 1972, 1976, 1980, 1984 and\fR
- \fI1988; referred to in Subsection 6.3 of the Series\fR
- \fIG Recommendations)\fR
- }
- .T&
- lw(342p) .
- Section 1\ \(em\ CABLE SHIPS
- .TE
- .TS
- center box ;
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) sw(18p) sw(18p) | cw(18p) sw(18p) sw(18p) | cw(18p) | cw(66p) , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c s | ^ | ^ | ^ | ^ | ^ , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c | c | c | c | c s | ^ , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c | c | ^ | ^ .
- Name of ship {
- Year of
- con\(hy
- struc\(hy
- tion
- } Displacement (tons) Overall length (m) Draft (m) Normal speed (knots) {
- Range (autonomy)
- (nautical miles)
- } Number of tanks Cable capacity Cable gear Maximum operating depth (m) Capability
- Cable
- Cubic metres (m\u3\d) Weight (tons) Repeaters {
- Forward cable drum (diameter)
- (m)
- } Unwinding pulley
- Bow sheave (diameter) (m) Stern sheave (diameter) (m)
- _
- .T&
- lw(132p) | lw(18p) | cw(36p) | lw(18p) | lw(138p) .
- CANADA
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIJohn Cabot\fR 1985 6400 95 7 13/16 6500 3 614 800 24 {
- 1\(mu3.0
- (30 t)
- +
- linear engine
- (18 pairs
- of
- wheels)
- } 3.0 \(em All {
- Repair ship. Plough capabilities.
- }
- .T&
- lw(150p) | cw(36p) | lw(156p) .
- DENMARK
- .T&
- lw(114p) | cw(108p) | lw(120p) .
- {
- \fIShip belonging to Telecom Denmark\fR
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIPeter Faber\fR 1982 Open 750 Closed 1830 78.4 Open 3.8 Closed 5.0 14.0 7000 1 tank 1 hold 310 230 600 400 App. 10 3.0 3.0 \(em 4000 {
- Reinforced for operation in ice\(hyfilled waters.
- On the aft deck:
- one
- A\(hyframe with hydraulic topping. Max. load 35 tons. One hydraulic towing
- and general purpose winch. Two hydraulic double\(hydrum warping winches.
- }
- _
- .TE
- .nr PS 9
- .RT
- .ad r
- \fBTable [1T1.11], p. (disposition \*`a l'italienne)\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .ce
- \fBH.T. [2T1.11]\fR
- .ps 9
- .vs 11
- .nr VS 11
- .nr PS 9
- .TS
- center box;
- lw(342p) .
- {
- Section 1\ \(em\ CABLE SHIPS \fI(cont.)\fR
- }
- .TE
- .TS
- center box;
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) sw(18p) sw(18p) | cw(18p) sw(18p) sw(18p) | cw(18p) | cw(66p) , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c s | ^ | ^ | ^ | ^ | ^ , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c | c | c | c | c s | ^ , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c | c | ^ | ^ .
- Name of ship {
- Year of
- con\(hy
- struc\(hy
- tion
- } Displacement (tons) Overall length (m) Draft (m) Normal speed (knots) {
- Range (autonomy)
- (nautical miles)
- } Number of tanks Cable capacity Cable gear Maximum operating depth (m) Capability
- Cable
- Cubic metres (m\u3\d) Weight (tons) Repeaters {
- Forward cable drum (diameter)
- (m)
- } Unwinding pulley
- Bow sheave (diameter) (m) Stern sheave (diameter) (m)
- _
- .T&
- lw(132p) | lw(18p) | cw(36p) | lw(18p) | lw(138p) .
- FRANCE
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIVercors\fR 1974 10 | 70 133 7.3 16.5 13 | 00 3 2535 6000* 140 2\(mu3.0 (30t) 3.0 {
- 4.0
- +
- linear engine (18 pairs
- of wheels)
- } All {
- Laying and repair of all types of telephone (coaxial and optical fibre)
- and power cables. Capacity: 3500 km deep\(hysea optical fibre cables,
- 1300 nautical miles 1\(hyinch cable; 650 nautical miles 1.5\(hyinch cable;
- 500 nautical miles 1.7\(hyinch cable.
- *
- A different weight in the case of power cable.
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIL\*'eon Th\*'evenin\fR 1983 6200 107 6.25 15.0 10 | 00 2 1060 1000 30 2\(mu3.4 (40t) 3.0 {
- 4.0
- +
- linear engine
- (18 pairs
- of wheels)
- } All {
- Repair ship, armoured coaxial and optical fibre cables.
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIRaymond Croze\fR 1983 6200 107 6.25 15.0 10 | 00 2 1400 1300 70 2\(mu3.4 (40t) 3.0 {
- 4.0
- +
- linear engine
- (8 pairs
- of wheels)
- } All {
- Lays/repairs\(emapprox. half the strage capacity of the \fIVercors\fR
- .
- \fINote\fR
- \ \(em\
- \fIL\*'eon Th\*'evenin\fR
- | and \fIRaymond Croze\fR
- are identical except
- for the positioning of the cable tanks.
- }
- _
- .TE
- .nr PS 9
- .RT
- .ad r
- \fBTable [2T1.11], p. (disposition \*`a l'italienne)\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .ce
- \fBH.T. [3T1.11]\fR
- .ps 9
- .vs 11
- .nr VS 11
- .nr PS 9
- .TS
- center box;
- lw(342p) .
- {
- Section 1\ \(em\ CABLE SHIPS \fI(cont.)\fR
- }
- .TE
- .TS
- center box;
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) sw(18p) sw(18p) | cw(18p) sw(18p) sw(18p) | cw(18p) | cw(66p) , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c s | ^ | ^ | ^ | ^ | ^ , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c | c | c | c | c s | ^ , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c | c | ^ | ^ .
- Name of ship {
- Year of
- con\(hy
- struc\(hy
- tion
- } Displacement (tons) Overall length (m) Draft (m) Normal speed (knots) {
- Range (autonomy)
- (nautical miles)
- } Number of tanks Cable capacity Cable gear Maximum operating depth (m) Capability
- Cable
- Cubic metres (m\u3\d) Weight (tons) Repeaters {
- Forward cable drum (diameter)
- (m)
- } Unwinding pulley
- Bow sheave (diameter) (m) Stern sheave (diameter) (m)
- _
- .T&
- lw(114p) | cw(108p) | lw(120p) .
- ITALY
- .T&
- lw(114p) | cw(108p) | lw(120p) .
- {
- \fIShips belonging to Pirelli/Euroshipping\fR
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIArabella\fR 1975 2620 76.66 5.18 11 2000 2 1100 2000 \(em \(em \(em 3 All Lay/repair
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIG. Verne\fR 1983 13 | 00 127.5 5.37 10 5000 3 5000 12 | 00 \(em \(em \(em 6 All Stern only
- .T&
- lw(150p) | cw(36p) | lw(156p) .
- JAPAN
- .T&
- lw(114p) | cw(108p) | lw(120p) .
- {
- \fI1.\ Ship belonging to KDD\fR
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIKDD Maru\fR 1967 6026 113.83 6.3 16 7000 3 1012 2700 70 3.6 3.0 Shute 4.0 All {
- Lays and repairs all types of telephone cables.
- }
- .T&
- lw(114p) | cw(108p) | lw(120p) .
- {
- \fI2.\ Ships belonging to NTT\fR
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- {
- \fINTT\fR
- \fITsugaru Maru\fR
- } 1969 1961 84.6 4.60 13.5 4000 1 320 650 50 3.3 2.5 1.8 5000 {
- Lays and repairs all types of telephone cables.
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- {
- \fINTT\fR
- \fIKuroshio Maru\fR
- } 1974 3345 119.3 5.60 16.5 6883 3 887 1200 95 3.8 3.0 2.0 All {
- Laying by linear engine. Lays and repairs all types of telephone
- cables.
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- {
- \fINTT\fR
- \fISetouchi Maru\fR
- } 1979 819 64.8 3.50 12.0 3690 2 139 250 20 2.5 \(em 1.5 5000 {
- Lays and repairs all types of telephone cables.
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- {
- \fINTT\fR
- \fIKoyo Maru\fR
- } 1983 1295 74.0 43.50 13.5 4500 2 169 250 20 3.0 2.5 2.0 All {
- Laying by linear engine. Lays and repairs all types of telephone
- cables (especially optical cables).
- }
- _
- .TE
- .nr PS 9
- .RT
- .ad r
- \fBTable [3T1.11], p. (disposition \*`a l'italienne)\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .ce
- \fBH.T. [4T1.11]\fR
- .ps 9
- .vs 11
- .nr VS 11
- .nr PS 9
- .TS
- center box;
- lw(342p) .
- {
- Section 1\ \(em\ CABLE SHIPS \fI(cont.)\fR
- }
- .TE
- .TS
- center box;
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) sw(18p) sw(18p) | cw(18p) sw(18p) sw(18p) | cw(18p) | cw(66p) , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c s | ^ | ^ | ^ | ^ | ^ , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c | c | c | c | c s | ^ , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c | c | ^ | ^ .
- Name of ship {
- Year of
- con\(hy
- struc\(hy
- tion
- } Displacement (tons) Overall length (m) Draft (m) Normal speed (knots) {
- Range (autonomy)
- (nautical miles)
- } Number of tanks Cable capacity Cable gear Maximum operating depth (m) Capability
- Cable
- Cubic metres (m\u3\d) Weight (tons) Repeaters {
- Forward cable drum (diameter)
- (m)
- } Unwinding pulley
- Bow sheave (diameter) (m) Stern sheave (diameter) (m)
- _
- .T&
- lw(114p) | cw(108p) | lw(120p) .
- UNITED KINGDOM
- .T&
- lw(114p) | cw(108p) | lw(120p) .
- {
- \fI1.\ Ships belonging to British Telecom (Marine) Limited\fR
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIAlert\fR 1961 9477 130 7.1 14 10 | 00 3 1509 3100 48 2.98 2.98 2.98 All {
- Laying by linear engine and sea\(hybed burial by plow.
- Lays/repairs all types of coaxial and optical fibre cables.
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIMonarch\fR 1975 4639 97 5.5 14 7000 4 417 850 12 3.00 3.00 None All {
- Lays/repairs armoured coaxial and optical fibre cables. Repairs
- lightweight coaxial and optical fibre cables. Detrenching/reburial by
- submersible jetting.
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIIris\fR 1976 4639 97 5.5 14 7000 4 417 850 12 3.00 3.00 None All {
- Lays/repairs armoured coaxial and optical fibre cables. Repairs
- lightweight coaxial and optical fibre cables.
- }
- .T&
- lw(114p) | cw(108p) | lw(120p) .
- {
- \fI2.\ Ships belonging to Cable & Wireless (Marine) Limited\fR
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIRetreiver\fR 1961 5650 112 5,82 13 8000 3 629 1568 11 3.0 3.0 Shute 3.05 All {
- Lays/repairs armoured cables.
- Repairs lightweight cables.
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fINorthern\fR 1962 3363 83.5 5.3 10 7200 3 480 1000 3 3.0 3.0 None 3500 Bow only, repair ship.
- .TE
- .LP
- \fINote\fR
- \ \(em\ Only relatively short cables are laid and only shore\(hyends.
- .nr PS 9
- .RT
- .ad r
- \fBTable [4T1.11], p. (disposition \*`a l'italienne)\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .ce
- \fBH.T. [5T1.11]\fR
- .ps 9
- .vs 11
- .nr VS 11
- .nr PS 9
- .TS
- center box;
- lw(342p) .
- {
- Section 1\ \(em\ CABLE SHIPS \fI(end)\fR
- }
- .TE
- .TS
- center box;
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) sw(18p) sw(18p) | cw(18p) sw(18p) sw(18p) | cw(18p) | cw(66p) , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c s | ^ | ^ | ^ | ^ | ^ , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c | c | c | c | c s | ^ , ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | ^ | c | c | ^ | ^ .
- Name of ship {
- Year of
- con\(hy
- struc\(hy
- tion
- } Displacement (tons) Overall length (m) Draft (m) Normal speed (knots) {
- Range (autonomy)
- (nautical miles)
- } Number of tanks Cable capacity Cable gear Maximum operating depth (m) Capability
- Cable
- Cubic metres (m\u3\d) Weight (tons) Repeaters {
- Forward cable drum (diameter)
- (m)
- } Unwinding pulley
- Bow sheave (diameter) (m) Stern sheave (diameter) (m)
- _
- .T&
- lw(96p) | cw(144p) | lw(102p) .
- {
- \fI2.\ Ships belonging to Cable & Wireless (Marine) Limited (cont.)\fR
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fICable Venture\fR 1962 16 | 83 153 8.97 12.5 10 | 00 4+1 (spare) 5086 9000 400 2.80 3.00 3.39 All {
- Laying by linear cable engine.
- Lays and repairs armoured and
- lightweight coaxial cables.
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIMercury\fR 1962 11 | 83 144 7.5 14.5 8000 3 2970 3500 144 3.05 3.50 Shute 3.05 All Ditto
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fICable Enterprise\fR 1964 5759 113 5.84 13 8000 3 887 2150 30 2.8 3.00 Shute 3.05 All {
- Lays/repairs armoured cables.
- Repairs lightweight cables.
- (See Note)
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fICable Protector\fR 1976 4608 86 4.7 10.0 7200 2 1272 1060 Nil Nil Nil 3.00 1000 {
- 2.6 m stern cable drum and small LCE.
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fIPacific Guardian\fR 1984 7526 116 6.32 14.0 8000 3 1416 3470 96 3.5 3.00 3.00 All {
- Laying by linear cable engine.
- Lays and repairs armoured and
- lightweight coaxial cables.
- }
- .T&
- lw(114p) | cw(108p) | lw(120p) .
- UNITED STATES OF AMERICA
- .T&
- lw(114p) | cw(108p) | lw(120p) .
- {
- \fIShips belonging to AT&T\fR
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fICharlie Brown\fR 1952 2881 99.9 5.8 15 7000 3 660 2122 \(em 3.66 3.66 N/A All {
- Repairs all types of telephone cables. Lays short and shore
- systems.
- }
- .T&
- cw(24p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | cw(18p) | lw(66p) .
- \fILong Lines\fR 1963 11 | 26 156 7.9 15 10 | 00 \fR 3 4420 7000 125 3.66 3.05 3.66 All Lays/repairs all types of telephone cables.
- .TE
- .LP
- \fINote\fR
- \ \(em\ Only relatively short cables are laid and only shore\(hyends.
- .nr PS 9
- .RT
- .ad r
- \fBTable [5T1.11], p. (disposition \*`a l'italienne)\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .ce
- \fBH.T. [1T2.11]\fR
- .ps 9
- .vs 11
- .nr VS 11
- .nr PS 9
- .TS
- center box;
- lw(342p) .
- {
- Section 2\ \(em\ SUBMERSIBLE\ EQUIPMENTS
- }
- .TE
- .TS
- center box;
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | cw(36p) | cw(36p) | cw(36p) | cw(30p) | cw(48p) .
- Type of submersible Displacement (tons) Overall length (m) Width (m) Height Trenching system Trenching Propulsion Max. operating depth (m) Capability
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | cw(36p) | cw(36p) | cw(36p) | cw(30p) | cw(48p) .
- FRANCE
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | lw(36p) | lw(36p) | lw(36p) | cw(30p) | lw(48p) .
- {
- \fISubmersible\fR
- \fIplough\fR
- \fIsystem\fR
- } 23 9.06 3 2.90 Ploughshare {
- Immediate burial of cable (up to 0.7 m) on ploughing
- } Towed by support ship 950 {
- Lay and bury cables and small pipes.
- }
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | lw(36p) | lw(36p) | lw(36p) | cw(30p) | lw(48p) .
- {
- \fISelf\(hyadvancing buried system\fR
- } 11.3 5.50 2.45 3.50 Trenching wheel or chain {
- Burial of existing cables down to 2\ m
- } Tracked vehicle 150 Burial of cables and pipes.
- _
- .T&
- lw(126p) | cw(102p) | lw(114p) .
- {
- JAPAN
- \fI1.\ Submersibles belonging to KDD\fR
- }
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | cw(36p) | lw(36p) | lw(36p) | cw(30p) | lw(48p) .
- {
- \fIKS\(hy2\fR
- \fIcable plough\fR
- } 9.3 11.2 2.56 2.0 \(em {
- Immediate burial of cable on ploughing
- } Towed by support ship 200 {
- Lay and bury cable in one action.
- }
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | lw(36p) | lw(36p) | lw(36p) | cw(30p) | lw(48p) .
- \fIMARCAS crawler\fR 4.7 4.0 3.0 2.15 Fluidisation jets Fluidisation jets Track drive 200 Trench in existing cable.
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | lw(36p) | lw(36p) | lw(36p) | cw(30p) | lw(48p) .
- \fIMARCAS\(hy2500\fR 3.6 2.65 1.8 1.9 Fluidisation jets Fluidisation jets {
- 2 vertical and 4 horizontal thrusters
- } 2500 {
- Post\(hylay burial, maintenance of cable and survey of senbed.
- }
- _
- .T&
- lw(126p) | cw(102p) | lw(114p) .
- {
- \fI2.\ Submersibles belonging to NTT\fR
- }
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | cw(36p) | lw(36p) | lw(36p) | cw(30p) | lw(48p) .
- {
- \fIPlough\(hytype Mark IV submarine cable burying system\fR
- } 16.8 8.4 4.0 4.0 \(em {
- Up to 1.5 m depth, immediate burial of cable on ploughing
- } Towed by support ship 500 {
- Simultaneous or post\(hylay burial of cable.
- }
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | lw(36p) | lw(36p) | lw(36p) | cw(30p) | lw(48p) .
- {
- \fISelf\(hyadvancing burying system\fR
- \fR
- } 3.5 3.4 2.3 1.8 {
- Fluidisation, and cutting jets, and dredge pump
- } {
- Up to 1.5 m depth with cutting and fluidisation jets
- } {
- Self\(hyadvancing by water jets
- } 40 Trench in existing cable.
- _
- .TE
- .nr PS 9
- .RT
- .ad r
- \fBTable [1T2.11], p. (disposition \*`a l'italienne)\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .ce
- \fBH.T. [2T2.11]\fR
- .ps 9
- .vs 11
- .nr VS 11
- .nr PS 9
- .TS
- center box;
- lw(342p) .
- {
- Section 2\ \(em\ SUBMERSIBLE\ EQUIPMENTS \fI(cont.)\fR
- }
- .TE
- .TS
- center box;
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | cw(36p) | cw(36p) | cw(36p) | cw(30p) | cw(48p) .
- Type of submersible Displacement (tons) Overall length (m) Width (m) Height (m) Tranching system Trenching Propulsion Max. operating depth (m) Capability
- _
- .T&
- lw(126p) | cw(102p) | lw(114p) .
- {
- UNITED KINGDOM
- \fI1.\ Submersibles belonging to British Telecom\fR
- \fI(Marine) Ltd.\fR
- }
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | lw(36p) | lw(36p) | lw(36p) | cw(30p) | lw(48p) .
- {
- \fISubmersible trencher\fR
- } 17.0 6.6 4 3.4 {
- Fluidisation and cutting jets and dredge pump
- } {
- Up to 1 m depth with cutting and fluidisation jets
- } {
- Three vertical and four horizontal thrusters, track drive differential
- steering
- } 274 {
- Trench in existing cable and pipe.
- }
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | lw(36p) | lw(36p) | lw(36p) | cw(30p) | lw(48p) .
- {
- \fISubmersible plough system\fR
- } 9.75 6.1 2.6 2.6 Ploughshare preceded by disc {
- Immediate burial of cable on ploughing
- } Towed by support ship 900 {
- Lay and bury cable, umbilical and pipe in one action giving
- full cable protection.
- }
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | lw(36p) | lw(36p) | lw(36p) | cw(30p) | lw(48p) .
- {
- \fIModular plough system\fR
- } 40 14 6 4.5 Ploughshare preceded by disc {
- Immediate burial of cable on ploughing
- } Towed by support ship 350 {
- Simultaneous or post lay burial of cable and umbilicals post
- lay burial of pipeline.
- }
- _
- .T&
- lw(126p) | cw(102p) | lw(114p) .
- {
- \fI2.\ Submersibles belonging to Cables & Wireless \fR
- \fI(Marine) Ltd.\fR
- }
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | lw(36p) | lw(36p) | lw(36p) | cw(30p) | lw(48p) .
- {
- \fIRemote control submersible, Cirrus\fR
- } 3.2 3.5 2.1 2.3 Water jets Trenching capability 0.3\ m Thrusters (7) 1000 {
- Visual inspection cable location/inspection/
- deburial. Manipulation.
- }
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | lw(36p) | lw(36p) | lw(36p) | cw(30p) | lw(48p) .
- \fICWM sea bed plough\fR 12.0 7.2 4.0 2.5 Passive blade Trenching capability 0.9\ m Towed 1000 {
- Steerable. Backfill Capability Partial Repeater burial.
- }
- _
- .TE
- .nr PS 9
- .RT
- .ad r
- \fBTable [2T2.11], p. (disposition \*`a l'italienne)\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .ce
- \fBH.T. [3T2.11]\fR
- .ps 9
- .vs 11
- .nr VS 11
- .nr PS 9
- .TS
- center box;
- lw(342p) .
- {
- Section 2\ \(em\ SUBMERSIBLE\ EQUIPMENTS \fI(end)\fR
- }
- .TE
- .TS
- center box;
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | cw(36p) | cw(36p) | cw(36p) | cw(30p) | cw(48p) .
- Type of submersible Displacement (tons) Overall length (m) Width (m) Height\fR (m)\fI Tranching system Trenching Propulsion Max. operating depth (m) Capability
- _
- .T&
- lw(126p) | cw(102p) | lw(114p) .
- UNITED\ STATES\ OF\ AMERICA
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | cw(36p) | cw(36p) | cw(36p) | cw(30p) | lw(48p) .
- \fISea plough IV A\fR \(em \(em \(em \(em \(em \(em \(em \(em {
- Plough trench 16\*U wide to maximum 24\*U depth.
- }
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | cw(36p) | cw(36p) | cw(36p) | cw(30p) | lw(48p) .
- \fISea plough V\fR \(em \(em \(em \(em \(em \(em \(em \(em {
- Same as
- \fIsea plough IV\ A.\fR
- }
- _
- .T&
- cw(36p) | cw(30p) | cw(30p) | cw(30p) | cw(30p) | cw(36p) | cw(36p) | cw(36p) | cw(30p) | lw(48p) .
- \fIScarab I/II\fR \(em \(em \(em \(em \(em \(em \(em \(em {
- Multi owners used for maintenance.
- }
- _
- .TE
- .nr PS 9
- .RT
- .ad r
- \fBTable [3T2.11], p. (disposition \*`a l'italienne)\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .sp 2P
- .LP
- \fBSupplement\ No.\ 14\fR
- .RT
- .sp 2P
- .sp 1P
- .ce 1000
- \fBMETHODS\ FOR\ MEASURING\ REGULARITY\ RETURN\ LOSS\fR
- .EF '% Fascicle\ III.3\ \(em\ Suppl.\ No\ 14''
- .OF '''Fascicle\ III.3\ \(em\ Suppl.\ No\ 14 %'
- .ce 0
- .sp 1P
- .ce 1000
- \fI(referred to in Recommendation G.623;\fR
- .sp 9p
- .RT
- .ce 0
- .ce 1000
- \fIthis Supplement is to be found on page 669 of Fascicle III.3\fR
- .ce 0
- .sp 1P
- .ce 1000
- \fIof Orange Book, Geneva, 1977)\fR \v'2P'
- .ce 0
- .sp 1P
- .sp 2P
- .LP
- \fBSupplement\ No.\ 18\fR
- .RT
- .sp 2P
- .sp 1P
- .ce 1000
- \fBINFORMATION\ ON\ SUBMARINE\ CABLES\ USED\ IN\ DEEP\ WATER\fR
- .EF '% Fascicle\ III.3\ \(em\ Suppl.\ No.\ 18''
- .OF '''Fascicle\ III.3\ \(em\ Suppl.\ No.\ 18 %'
- .ce 0
- .sp 1P
- .ce 1000
- \fI(referred to in Subsection 6.3;\fR
- .sp 9p
- .RT
- .ce 0
- .ce 1000
- \fIthis Supplement is to be found on page 313 of Fascicle III.2\fR
- .ce 0
- .sp 1P
- .ce 1000
- \fIof the Red Book, Geneva, 1985)\fR \v'2P'
- .ce 0
- .sp 1P
- .sp 2P
- .LP
- \fBSupplement\ No.\ 19\fR
- .RT
- .sp 2P
- .ce 1000
- \fBDIGITAL\ CROSSTALK\ MEASUREMENT\ (METHOD\ USED\ BY\fR
- .EF '% Fascicle\ III.3\ \(em\ Suppl.\ No\ 19''
- .OF '''Fascicle\ III.3\ \(em\ Suppl.\ No\ 19 %'
- .ce 0
- .sp 1P
- .ce 1000
- \fBTHE\ ADMINISTRATIONS\ OF\ FRANCE,\ THE\ NETHERLANDS\ AND\ SPAIN)\fR
- .ce 0
- .sp 1P
- .ce 1000
- \fI(referred to in Recommendation G.612;\fR
- .sp 9p
- .RT
- .ce 0
- .ce 1000
- \fIthis Supplement is to be found on page 326 of Fascicle III.2\fR
- .ce 0
- .sp 1P
- .ce 1000
- \fIof the Red Book, Geneva, 1985)\fR \v'2P'
- .ce 0
- .sp 1P
- .sp 2P
- .LP
- \fBSupplement\ No.\ 33\fR
- .RT
- .sp 2P
- .sp 1P
- .ce 1000
- \fBEXAMPLES\ OF\ FIBRE\ DESIGN\ GUIDELINES\fR
- .EF '% Fascicle\ III.3\ \(em\ Suppl.\ No.\ 33''
- .OF '''Fascicle\ III.3\ \(em\ Suppl.\ No.\ 33 %'
- .ce 0
- .sp 1P
- .ce 1000
- \fI(Diagrams used in Japan and in the United Kingdom)\fR
- .sp 9p
- .RT
- .ce 0
- .sp 1P
- .ce 1000
- \fI(referred to in Recommendations G.652 and G.654)\fR
- .ce 0
- .sp 1P
- .PP
- The following two diagrams provide and overview of the
- characteristics of two particular types of fibre. The aim of these diagrams
- is to give guidance to potential fibre users when preparing optical fibre
- specifications.
- .sp 1P
- .RT
- .PP
- Figure 1, which is used in Japan and in the United Kingdom, gives empirically
- determined relationships between mode field diameter and cut\(hyoff
- wavelength, as independent variables, with 1550\ nm bend loss performance and
- chromatic dispersion coefficients at 1285\ nm and 1330\ nm for matched\(hyclad,
- single\(hymode fibre compliant with Rec.\ G.652. Two types of 1550\ nm
- bend loss
- performance tests are described, the Rec.\ G.652 test (37.5\ mm radius
- mandrel/100\ turns, maximum loss 1.0\ dB) and the test most commonly specified
- in the United Kingdom (30\ mm radius mandrel/10\ turns, maximum loss 0.2\
- dB).
- .PP
- Figure 2, which is used by KDD, Japan, gives relationships between
- mode field diameter and cut\(hyoff wavelength with theoretical 1550\ nm
- bend loss performance and various chromatic dispersion coefficients. This
- information is for matched\(hyclad, single\(hymode fibre which is compliant
- with Rec.\ G.654.
- .bp
- .RT
- .LP
- .rs
- .sp 47P
- .ad r
- \fBFigure 1/Supp.33, p.\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .LP
- .rs
- .sp 47P
- .ad r
- \fBFigure 2/Supp.33, p.\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
-