8.2.1
A Preparation Service is
a national Meteorological Service which has accepted responsibility
for the preparation of forecasts and warnings for parts of, or an
entire, designated Maritime Safety Information (MSI) area in the WMO
system for the dissemination of meteorological forecasts and warnings
to shipping under the GMDSS and for their transfer to the relevant
Issuing Service for broadcast.
8.2.2
An Issuing Service is
a national Meteorological Service which has accepted responsibility
for ensuring that meteorological forecasts and warnings for shipping
are disseminated through the Inmarsat and SafetyNET service to the
designated area for which the Service has accepted responsibility
under the broadcast requirements of the GMDSS. The Issuing Service
is responsible for composing a complete broadcast bulletin on the
basis of information input from the relevant Preparation Services,
and for inserting the appropriate EGC header, as specified in annex
4(b) of the International SafetyNET Manual. The Issuing
Service is also responsible for monitoring the broadcasts of information
to its designated area of responsibility.
Preparation and issue of weather and sea bulletins
8.2.3
Weather and sea bulletins shall
include, in the order given hereafter:
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.1
Part I: Storm warnings;
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.2
Part II: Synopsis of major features
of the surface weather chart and, to the possible extent, significant
characteristics of corresponding sea-surface conditions; and
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.3
Part III: Forecasts.
8.2.4
Weather and sea bulletins may,
in addition, include the following parts:
-
.1
Part IV: Analysis and/or prognosis
in IAC FLEET code form;
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.2
Part V: Selection of reports from
sea stations; and
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.3
Part VI: Selection of reports
from land stations.
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Notes: (1) The reports included in part VI should
be for a fixed selection of stations in a fixed order.
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(2) Parts IV, V and VI may be issued at a separate scheduled
time.
8.2.5
For area(s) for which an Issuing
Service has assumed responsibility, the Service should select the
appropriate CES to service that area. In particular, the following
procedures should be adopted:
-
.1
For scheduled broadcasts: These
should be issued for broadcast over at least a single nominated satellite,
in accordance with a pre-arranged schedule, coordinated by WMO.
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.2
For unscheduled broadcasts: These
should be issued for broadcast under the SafetyNET Service through
all Inmarsat ocean region satellites covering the Issuing Service’s
area of responsibility.
8.2.6
Weather and sea bulletins shall
be prepared and issued at least twice daily.
8.2.7
The issue of the weather and
sea bulletins shall be at a scheduled time and be in the following
sequence: part I to be followed immediately by part II and then part
III. A schedule of transmission start times for these bulletins has
been compiled for all MSI areas and the CESs which serve the areas
and takes into consideration, inter alia, the existing
WMO synoptic times for observations, data analysis and forecast production.
Additionally, as these broadcast schedules for the International SafetyNET
Service have to be coordinated, under the aegis of WMO, with other
organizations such as IHO, Issuing Services should not independently
change or request WMO to arrange frequent alterations to these coordinated
and published schedules.
8.2.8
Issuing Services must ensure
that the correct EGC message addressing formats are adhered to for
all warning and forecast messages intended for broadcast by a CES.
8.2.9
Warnings shall be given in
plain language. Synopses and forecasts should be given in plain language,
however some abbreviations may be used, especially when the size of
the bulletin needs to be reduced for dissemination by a low bandwidth
system, such as the NAVTEX Service (ref: 8.2.13).
8.2.10
Warnings, synopses and forecasts
intended for the International SafetyNET and the International NAVTEX
Services shall be broadcast in English.
Note:
Additionally, if a national
Meteorological Service wishes to issue warnings and forecasts to meet
national obligations under SOLAS, broadcasts may be made in other
languages. These broadcasts will be part of national SafetyNET or
NAVTEX Services.
8.2.11
In order to ensure the integrity
of the warnings and forecasts being received by mariners, it is essential
that Issuing Services monitor the broadcasts which they originate.
Monitoring is especially important in a highly automated system which
is dependent on careful adherence to procedure and format. This may
be accomplished by the installation of an EGC receive-capability at
the Issuing Service’s facility.
Note:
Each Issuing Service may use
the EGC receiver to check the following:
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(1) That the message has been broadcast;
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(2) That the message is received correctly;
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(3) That cancellation messages are properly executed;
and
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(4) Any unexplained delay in the message being
broadcast.
8.2.12
The language of the synopsis
should be as free as possible from technical phraseology.
8.2.13
The terminology in weather
and sea bulletins should be in accordance with the “Multilingual
list of terms used in weather and sea bulletins”, which is available
in Appendix I.2 to the Manual on Marine Meteorological Services (WMO
No. 558) and in Annex 2.B to the Guide to Marine Meteorological Services
(WMO No. 471). Specific guidelines for the NAVTEX Service, including
a list of common abbreviations for weather and sea messages, are available
in Appendix II.2 to the Manual on Marine Meteorological Services (WMO
No. 558). The list of common abbreviations is also given in 8.6 hereto.