EN 61097-14:2010

SLOVENSKI STANDARD
01-maj-2010
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Global maritime distress and safety system (GMDSS) - Part 14: AIS Search And Rescue
Transmitter (AIS-SART) - Operational and performance requirements, methods of testing
and required test results (IEC 61097-14:2010)
Weltweites Seenot- und Sicherheitsfunksystem (GMDSS) - Teil 14: AIS-
Seenotrettungssender (AIS-SART) - Betriebs- und Leistungs-anforderungen,
Prüfverfahren und geforderte Prüfergebnisse (IEC 61097-14:2010)
Système mondial de détresse et de sécurité en mer (GMDSS) - Partie 14: Émetteur de
recherche et sauvetage AIS - Exigences opérationnelles et de fonctionnement,
méthodes d'essai et résultats exigibles (CEI 61097-14:2010)
Ta slovenski standard je istoveten z: EN 61097-14:2010
ICS:
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61097-14
NORME EUROPÉENNE
March 2010
EUROPÄISCHE NORM
ICS 47.020.70
English version
Global maritime distress and safety system (GMDSS) -
Part 14: AIS Search And Rescue Transmitter (AIS-SART) -
Operational and performance requirements, methods of testing
and required test results
(IEC 61097-14:2010)
Système mondial de détresse  Weltweites Seenot-
et de sécurité en mer (GMDSS) - und Sicherheitsfunksystem (GMDSS) -
Partie 14: Émetteur de recherche Teil 14: AIS-Seenotrettungssender
et sauvetage AIS - (AIS-SART) -
Exigences opérationnelles Betriebs- und Leistungs-anforderungen,
et de fonctionnement, méthodes d'essai Prüfverfahren und geforderte
et résultats exigibles Prüfergebnisse
(CEI 61097-14:2010) (IEC 61097-14:2010)

This European Standard was approved by CENELEC on 2010-03-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61097-14:2010 E
Foreword
The text of document 80/582/FDIS, future edition 1 of IEC 61097-14, prepared by IEC TC 80, Maritime
navigation and radiocommunication equipment and systems, was submitted to the IEC-CENELEC
parallel vote and was approved by CENELEC as EN 61097-14 on 2010-03-01.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2010-12-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2013-03-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61097-14:2010 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 61097-1 NOTE  Harmonized as EN 61097-1.
IEC 61108-1 NOTE  Harmonized as EN 61108-1.
IEC 61108-2 NOTE  Harmonized as EN 61108-2.
IEC 61993-2 NOTE  Harmonized as EN 61993-2.
IEC 62288 NOTE  Harmonized as EN 62288.
__________
- 3 - EN 61097-14:2010
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60945 - Maritime navigation and radiocommunication EN 60945 -
equipment and systems - General
requirements - Methods of testing and
required test results
IEC 61108 Series Maritime navigation and radiocommunication EN 61108 Series
equipment and systems - Global navigation
satellite systems (GNSS)
ITU-R - Technical characteristics for an automatic - -
Recommendation identification system using time division
M.1371 multiple access in the VHF maritime mobile
band
ITU-T - Basic parameters for the measurement of - -
Recommendation error performance at bit rates below the
O.153 primary rate
IMO Resolution - Performance standards for survival craft AIS - -
MSC.246(83) search and rescue transmitter (AIS-SART)

IEC 61097-14 ®
Edition 1.0 2010-02
INTERNATIONAL
STANDARD
colour
inside
Global maritime distress and safety system (GMDSS) –
Part 14: AIS search and rescue transmitter (AIS-SART) – Operational and
performance requirements, methods of testing and required test results

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
W
ICS 47.020.70 ISBN 2-8318-1078-1
– 2 – 61097-14 © IEC:2010(E)
CONTENTS
FOREWORD.5
1 Scope.7
2 Normative references .7
3 Performance requirements .8
3.1 General .8
3.2 Operational .8
3.3 Battery .8
3.3.1 General .9
3.3.2 Battery life and expiry date .9
3.3.3 Reverse polarity protection .9
3.4 Unique identifier (user ID) .9
3.5 Environment .10
3.6 Range performance.10
3.7 Transmission performance .10
3.7.1 Active mode .10
3.7.2 Test Mode .12
3.8 Labelling .12
3.9 Manuals .12
4 Technical requirements .13
4.1 Functional block diagram of an AIS-SART .13
4.1.1 General .13
4.1.2 TDMA transmitter (AIS Tx).13
4.1.3 Controller .13
4.1.4 Timing and synchronisation device .13
4.1.5 Battery .14
4.1.6 Electronic position fixing system .14
4.1.7 Activator .14
4.1.8 Indicator .14
4.2 Physical layer requirement .15
4.2.1 Transmitter requirements.15
4.3 Link layer requirements .16
4.3.1 General .16
4.3.2 AIS Messages .16
4.3.3 Synchronisation.17
4.3.4 VDL access scheme .17
4.3.5 Link sub-layer 1: Medium Access Control (MAC) .18
4.3.6 Link sub-layer 2: Data Link Service (DLS) .18
4.3.7 Link sub-layer 3: Link Management Entity (LME) .18
5 General methods of testing.18
5.1 Introduction .18
5.2 General requirements.18
5.2.1 General .18
5.2.2 Performance check.19
5.2.3 Performance test .19
5.3 Normal test conditions.19
5.4 Extreme test conditions .19

61097-14 © IEC:2010(E) – 3 –
5.5 Preparation of AIS-SART for type-approval testing .19
5.6 Test signals.19
5.6.1 Standard test signal number 1 .19
5.6.2 Standard test signal number 2 .19
5.6.3 Standard test signal number 3 .20
5.7 Artificial antenna (dummy load) .20
5.8 Facilities for access.20
5.9 Modes of operation of the transmitter .20
5.10 Measurement uncertainties .20
6 Performance tests .21
6.1 Operational tests .21
6.2 Battery .21
6.2.1 Battery capacity test .21
6.2.2 Expiry date indication .22
6.2.3 Reverse polarity protection .22
6.3 Unique identifier .22
6.4 Environment .22
6.5 Range performance.22
6.6 Transmission performance .22
6.7 Labelling .22
6.8 Manuals .23
6.9 Electronic position fixing system.23
6.10 Activator.23
6.11 Indicator .23
7 Physical radio tests .23
7.1 General description .23
7.2 Frequency error.24
7.2.1 Purpose.24
7.2.2 Method of measurement .24
7.2.3 Required results .24
7.3 Conducted power .24
7.3.1 Purpose.24
7.3.2 Method of measurement .24
7.3.3 Required result.25
7.4 Radiated power .25
7.4.1 Purpose.25
7.4.2 Method of measurement .25
7.4.3 Required results .26
7.5 Modulation spectrum slotted transmission .26
7.5.1 Purpose.26
7.5.2 Method of measurement .26
7.5.3 Required results .26
7.6 Transmitter test sequence and modulation accuracy .27
7.6.1 Purpose.27
7.6.2 Method of measurement .27
7.6.3 Required results .28
7.7 Transmitter output power versus time function.28
7.7.1 Definition.28
7.7.2 Method of measurement .29

– 4 – 61097-14 © IEC:2010(E)
7.7.3 Required results .30
7.8 Spurious emissions from the transmitter.30
7.8.1 Purpose.30
7.8.2 Method of measurement .30
7.8.3 Required results .30
8 Link layer tests .30
8.1 Tests for synchronisation accuracy.30
8.1.1 Method of measurement .30
8.1.2 Required results .30
8.2 Active mode tests .30
8.2.1 Method of measurement .31
8.2.2 Initialisation period – Required results .31
8.2.3 Message content of Message 1 – Required results .31
8.2.4 Message content of Message 14 – Required results .31
8.2.5 Transmission schedule for Message 1 – Required results.32
8.2.6 Communication state of Message 1 – Required results .32
8.2.7 Transmission schedule of Message 14 – Required results .32
8.2.8 Transmission with lost EPFS – Required results .32
8.3 Test mode tests.33
8.3.1 General .33
8.3.2 Transmission with EPFS data available .33
8.3.3 Transmission without EPFS data available .33
Annex A (informative) Results of trials to verify the range performance of the AIS-
SART.35
Bibliography.39

Figure 1 – Functional block diagram of an AIS-SART.13
Figure 2 – Burst transmissions in active mode .18
Figure 3 – Measurement arrangement .24
Figure 4 – Emission mask.27
Figure 5 – Measurement arrangement for modulation accuracy .27
Figure 6 – Power versus time mask .29

Table 1 – Required parameter settings for an AIS-SART.15
Table 2 – Required settings of physical layer constants .15
Table 3 – Modulation parameters of the physical layer of the AIS-SART .16
Table 4 – Minimum required transmitter characteristics.16
Table 5 – Maximum values of absolute measurement uncertainties .20
Table 6 – Conducted power – Required results .25
Table 7 – Peak frequency deviation versus time .28
Table 8 – Definition of timings.29
Table A.1 – Test results, AIS-SART to vessel (Oban Bay, Scotland) Distances detected
in nautical miles (NM) .37
Table A.2 – Test results, AIS-SART to helicopter (Oban Bay, Scotland) Distances
detected in nautical miles (NM).37
Table A.3 – Test results, AIS-SART to aircraft (Key West, Florida) Distances detected
in nautical miles (NM) .38

61097-14 © IEC:2010(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GLOBAL MARITIME DISTRESS AND
SAFETY SYSTEM (GMDSS) –
Part 14: AIS search and rescue transmitter (AIS-SART) –
Operational and performance requirements,
methods of testing and required test results

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61097-14 has been prepared by IEC technical committee 80:
Maritime navigation and radiocommunication equipment and systems.
The text of this standard is based on the following documents:
FDIS Report on voting
80/582/FDIS 80/589/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 6 – 61097-14 © IEC:2010(E)
A list of all parts of the IEC 61097 series published under the general title Global maritime
distress and safety system (GMDSS), can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The “colour inside” logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this publication using a colour printer.

61097-14 © IEC:2010(E) – 7 –
GLOBAL MARITIME DISTRESS AND
SAFETY SYSTEM (GMDSS) –
Part 14: AIS search and rescue transmitter (AIS-SART) –
Operational and performance requirements,
methods of testing and required test results

1 Scope
This part of IEC 61097 specifies the minimum performance requirements, technical
characteristics and methods of testing, and required test results, for Automatic Identification
Systems (AIS) search and rescue transmitters (AIS-SART) which may be carried by ships as
a search and rescue locating device as required by Chapters III and IV of the International
Convention for Safety of Life at Sea (SOLAS), as amended. It takes account of IMO resolution
A.694(17) and is associated with IEC 60945. When a requirement in this standard is different
from IEC 60945, the requirement in this part of IEC 61097 takes precedence.
This standard incorporates the applicable parts of the performance standards included in IMO
Resolution MSC.246(83) and the applicable technical characteristics included in
Recommendation ITU-R M.1371 and is associated with IEC 61993-2 (Class A shipborne AIS).
All the text of this standard, whose wording is identical to that of IMO Resolution
MSC.246(83), is printed in italics, and the Resolution and associated performance standard
paragraph numbers are indicated in brackets.
NOTE IEC 61097-1 specifies the requirements for radar transponders for use in search and rescue operations
(SART) which may alternatively be carried by ships as a search and rescue locating device.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60945, Maritime navigation and radiocommunication equipment and systems – General
requirements – Methods of testing and required test results
IEC 61108 (all parts), Maritime navigation and radiocommunication equipment and
systems – Global navigation satellite systems (GNSS)
IMO Resolution MSC.246(83), Performance standards for survival craft AIS search and
rescue transmitter (AIS-SART)
ITU-R Recommendation M.1371, Technical characteristics for an automatic identification
system using time division multiple access in the VHF maritime mobile band
ITU-T Recommendation O.153, Basic parameters for the measurement of error performance
at bit rates below the primary rate

– 8 – 61097-14 © IEC:2010(E)
3 Performance requirements
3.1 General
(246/A2) The AIS-SART shall be capable of transmitting messages that indicate the position,
static and safety information of a unit in distress. The transmitted messages shall be
compatible with existing AIS installations. The transmitted messages shall be recognized and
displayed by assisting units in the reception range of AIS-SART, and clearly distinguish the
AIS-SART from an AIS installation.
3.2 Operational
(See 6.1)
(246/A2.1) The AIS-SART shall
a) be capable of being easily activated by unskilled personnel,
b) be fitted with means to prevent inadvertent activation,
c) be equipped with a means which is either visual or audible, or both visual and audible, to
indicate correct operation,
d) be capable of manual activation and deactivation, provision for automatic activation may
be included,
e) be capable of withstanding without damage drops from a height of 20 m into water,
f) be watertight at a depth of 10 m for at least 5 min,
g) maintain water tightness when subjected to a thermal shock of 45 °C under specified
conditions of immersion,
h) be capable of floating (not neccesarily in an operating position) if it is not an integral part
of the survival craft,
i) be equipped with a buoyant lanyard, suitable for use as a tether, if it is capable of floating,
The buoyant lanyard shall have a length not less than 10 m.
j) be not unduly affected by seawater or oil,
k) be resistant to deterioration in prolonged exposure to sunlight,
l) be of a highly visible yellow/orange colour on all surfaces where this will assist detection,
m) have a smooth external construction to avoid damaging the survival craft,
n) be provided with an arrangement to bring the AIS-SART antenna to a level of at least 1
metre above sea level, together with illustrated instruction,
The manufacturer shall provide a visible means of indicating the base of the antenna. The
height of 1 metre shall be measured to the declared 1 metre mark from sea level. The
instructions shall illustrate the minimum requirement of 1 metre above sea level during use
along with the installation method.
o) be capable of transmitting with a reporting interval of 1 minute or less,
p) be equipped with an internal position source and be capable of transmitting its current
position in each message, and
q) be capable of being tested for all functionalities using specific test information.
3.3 Battery
(See 6.2)
61097-14 © IEC:2010(E) – 9 –
3.3.1 General
(246/A2.2) The AIS-SART shall have sufficient battery capacity to operate for 96 h within a
temperature range of −20 °C to +55 °C, and to provide for testing of the functions on the
equipment.
3.3.2 Battery life and expiry date
The life of the battery as defined by its expiry date shall be at least three years. The expiry
date of the battery shall be the battery manufacturing date plus no more than half the useful
life of the battery. The useful life of the battery is defined as the period of time after the date
of battery manufacture that the battery will continue to meet the input power requirements of
the AIS-SART for at least 96 h, after allowing for all losses over the useful life of the battery.
To define the useful life of the battery, the following losses at the temperature of
+20 °C ± 5 °C shall be included, in addition to the power required to operate the AIS-SART:
a) self-testing annually with Electronic Position Fixing System (EPFS) data available;
b) self-discharge of the battery;
c) stand-by loads.
The manufacturer shall provide evidence to support the above battery life calculations
including the time for self testing and assuming typical EPFS acquisition time.
The AIS-SART shall be clearly and durably marked with the battery expiry date (see 3. 8) .
NOTE For example a battery that has a useful life of 10 years from the date of manufacture, cannot have an
expiry date that exceeds 5 years from the date of manufacture and would have to be capable of providing enough
power for 10 years of self-testing, self-discharge and stand-by loads in addition to the operational power
requirement of the AIS-SART.
3.3.3 Reverse polarity protection
It shall not be possible to connect the battery with the polarity reversed.
3.4 Unique identifier (user ID)
(See 6.3)
(246/A2.2) The AIS-SART shall have an unique identifier to ensure the integrity of the VHF
data link.
The user ID for an AIS-SART is 970xxyyyy, where xx = manufacturer ID 01 to 99; yyyy = the
sequence number 0000 to 9999.
The manufacturer ID xx = 00 is reserved for test purposes The unique identifier used for the
purposes of type approval to this standard shall be in the format 97000yyyy.
After being programmed by the manufacturer, it shall not be possible for the user to change
the unique identifier of the AIS SART.
The configuration method for the unique identifier shall be as defined by the manufacturer and
held in non-volatile memory.
—————————
The manufacturer ID can be obtained from CIRM, South Bank House, Black Prince Road, London SE1 7SJ, UK.
Telephone: +44 20 7587 1245. E-mail: secgen@cirm.org. Web-site: www.cirm.org. Each manufacturers ID will
support 10 000 units. Further IDs can be issued when production exceeds 10 000 units.

– 10 – 61097-14 © IEC:2010(E)
3.5 Environment
(See 6.4)
(246/A2.3) The AIS-SART shall be so designed as to be able to operate under ambient
temperatures of −20 °C to +55 °C. It shall not be damaged in stowage throughout the
temperature range of −30 °C to +70 °C.
The AIS-SART shall meet the environmental condition requirements of IEC 60945 for
equipment category Portable.
3.6 Range performance
(See 6.5)
(246/A2.4)The AIS-SART shall be detectable at a range of 5 nautical miles over water.
The nominal radiated power (EIRP ) of the AIS-SART shall be 1 W.
This radiated power provides the range performance of the AIS-SART as described in
Annex A.
NOTE To a surface vessel the 5 nautical mile range is based on an antenna height for the AIS-SART of 1 m
above sea level, and the antenna height for a receiving AIS Station of at least 15 m above sea level. The receiving
AIS Station has the minimum sensitivity of a Class A mobile AIS station as defined in IEC 61993-2.
3.7 Transmission performance
(See 6.6)
3.7.1 Active mode
In active mode the AIS-SART transmits messages in a burst of 8 messages once per minute.
The SOTDMA (Self-Organising Time Division Multiple Access) communication state of
Message 1 is used to pre-announce its future transmissions.
The AIS-SART shall transmit Message 1 “Position report” with the Navigational Status set to
14 and Message 14 “Safety related broadcast message” with the text “SART ACTIVE”.
NOTE A future revision of Recommendation ITU-R M.1371 may define navigational status 14 as “AIS-SART”.
Message 14 shall be transmitted nominally every 4 min and replace one of the position
reports on both channels.
The AIS-SART transmissions shall alternate between AIS 1 and AIS 2.
st th
The 1 and 5 burst shall be as follows.
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out={7,3}, sub-message=0)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out={7,3}, sub-message=0)
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out={7,3}, sub-message=0)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out={7,3}, sub-message=0)
• AIS 1, Message 14 “SART ACTIVE”
• AIS 2, Message 14 “SART ACTIVE”
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out={7,3}, sub-message=0)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out={7,3}, sub-message=0)
—————————
Equivalent Isotropically Radiated Power

61097-14 © IEC:2010(E) – 11 –
nd th th
The 2 , 4 , 6 burst shall be as follows.
• AIS 1, Message 1, Nav Status =14, comm-state (time-out={6,4,2}, sub-message=slot)
• AIS 2, Message 1, Nav Status =14, comm-state (time-out={6,4,2}, sub-message=slot)
• AIS 1, Message 1, Nav Status =14, comm-state (time-out={6,4,2}, sub-message=slot)
• AIS 2, Message 1, Nav Status =14, comm-state (time-out={6,4,2}, sub-message=slot)
• AIS 1, Message 1, Nav Status =14, comm-state (time-out={6,4,2}, sub-message=slot)
• AIS 2, Message 1, Nav Status =14, comm-state (time-out={6,4,2}, sub-message=slot)
• AIS 1, Message 1, Nav Status =14, comm-state (time-out={6,4,2}, sub-message=slot)
• AIS 2, Message 1, Nav Status =14, comm-state (time-out={6,4,2}, sub-message=slot)
rd
The 3 burst shall be as follows.
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out=5, sub-message=0)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out=5, sub-message=0)
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out=5, sub-message=0)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out=5, sub-message=0)
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out=5, sub-message=0)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out=5, sub-message=0)
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out=5, sub-message=0)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out=5, sub-message=0)
th
The 7 burst shall be as follows.
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out=1, sub-message=utc)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out=1, sub-message=utc)
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out=1, sub-message=utc)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out=1, sub-message=utc)
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out=1, sub-message=utc)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out=1, sub-message=utc)
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out=1, sub-message=utc)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out=1, sub-message=utc)
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The 8 burst shall be as follows.
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out=0, sub-message=incr)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out=0, sub-message=incr)
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out=0, sub-message=incr)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out=0, sub-message=incr)
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out=0, sub-message=incr)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out=0, sub-message=incr)
• AIS 1, Message 1, Nav Status = 14, comm-state (time-out=0, sub-message=incr)
• AIS 2, Message 1, Nav Status = 14, comm-state (time-out=0, sub-message=incr)
th
In the 8 burst the increment to the next burst (sub-message=incr) shall be randomly selected
between 2 025 and 2 475 slots.
This pattern of transmissions is repeated. It is permissible to start the sequence on AIS 2.
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Message 14 is transmitted at the 1 and 5 bursts (slot-time-out = 7 and 3) thereby ensuring
that all future Message 14 messages are pre-announced.
(246/A.2.5) The AIS-SART shall continue transmission even if the position and time
synchronization from the positioning system is lost or fails.

– 12 – 61097-14 © IEC:2010(E)
If position and time synchronization are lost the AIS-SART shall continue to transmit with last
known position, COG (Course Over Ground), SOG (Speed Over Ground) and indicate that the
positioning system is inoperative (Time stamp = 63) and synch state 3 (see 4.3.3).
(246/A.2.6) The AIS-SART shall transmit within 1 minute of activation.
The AIS-SART shall start transmitting within 1 min. If the position is unknown then it shall use
default position (+91; +181). If time is not established the unit shall begin transmission
unsynchronised. The unit shall begin synchronised transmission with the correct position
within 15 min under normal operating conditions.
The position of the AIS-SART shall be determined every minute.
In conditions when the AIS-SART cannot get time and position within 15 min, the AIS-SART
shall attempt to obtain a position for at least 30 min in the first hour after activation and at
least 5 min in subsequent hours.
3.7.2 Test Mode
It shall be possible to put the AIS-SART in a test mode. When operating in the test mode
there shall be one burst of 8 messages, 4 on each channel alternating.
• AIS 1, Message 14 “SART TEST”
• AIS 2, Message 1, Nav Status = 15 not defined, comm-state (time-out=0, sub-message=0)
• AIS 1, Message 1, Nav Status = 15 not defined, comm-state (time-out=0, sub-message=0)
• AIS 2, Message 1, Nav Status = 15 not defined, comm-state (time-out=0, sub-message=0)
• AIS 1, Message 1, Nav Status = 15 not defined, comm-state (time-out=0, sub-message=0)
• AIS 2, Message 1, Nav Status = 15 not defined, comm-state (time-out=0, sub-message=0)
• AIS 1, Message 1, Nav Status = 15 not defined, comm-state (time-out=0, sub-message=0)
• AIS 2, Message 14 “SART TEST”
It is permissible to start the sequence on AIS 2.
The test messages shall be transmitted in one burst after position, SOG, COG and time are
available. If the AIS-SART does not acquire position, SOG, COG and time within 15 min it
shall transmit the test messages but with appropriate field values (including default values) in
Message 1 for position, SOG, COG and time stamp.
Activation of the test facility shall reset au
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