Furuno NX700P, NX700 Certification

MSC 77/26/Add.1

ANNEX 10

RESOLUTION MSC.148(77)

(adopted on 3 June 2003)

ADOPTION OF THE REVISED PERFORMANCE STANDARDS FOR NARROW-BAND

DIRECT-PRINTING TELEGRAPH EQUIPMENT FOR THE RECEPTION OF

NAVIGATIONAL AND METEOROLOGICAL WARNINGS AND URGENT

INFORMATION TO SHIPS (NAVTEX)

THE MARITIME SAFETY COMMITTEE,

RECALLING Article 28(b) of the Convention on the International Maritime Organization
concerning the functions of the Committee,

RECALLING ALSO resolution A.886(21), by which the Assembly resolved that the
functions of adopting performance standards for radio and navigational equipment, as well as
amendments thereto, shall be performed by the Maritime Safety Committee on behalf of the
Organization,

NOTING the carriage requirement in SOLAS chapter IV/7.1.4 for a receiver capable of
receiving International NAVTEX narrow-band direct-printing (NBDP) broadcasts for the
promulgation of navigational and meteorological warnings to shipping,

NOTING FURTHER the success of the International NAVTEX service in the
promulgation of Maritime Safety Information (MSI),

NOTING ALSO with regard to the enhanced storage, processing and display possibilities
offered by recent technical advances,

CONSIDERING that further growth in information promulgated to ships will be
constrained by the capacity of the International NAVTEX service and the increasing importance
of National NAVTEX services,

HAVING CONSIDERED the recommendations on the revision of resolution A.525(13)
made by the Sub-Committee on Radiocommunications and Search and Rescue at its seventh
session,

1. ADOPTS the revised Recommendation on Performance Standards for Narrow-Band
Direct-Printing Telegraph Equipment for the Reception of Navigational and Meteorological
Warnings and Urgent Information to Ships (NAVTEX), set out in the Annex to the present
resolution;

2. RECOMMENDS Governments to ensure that NAVTEX receiver equipment:

(a) if installed on or after 1 July 2005, conforms to performance standards not inferior

to those specified in the Annex to the present resolution;

(b) if installed before 1 July 2005, conforms to performance standards not inferior to

those specified in the Annex to resolution A.525(13).

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MSC 77/26/Add.1
ANNEX 10
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ANNEX

REVISED RECOMMENDATION ON PERFORMANCE STANDARDS FOR

NARROW-BAND DIRECT-PRINTING TELEGRAPH EQUIPMENT FOR

THE RECEPTION OF NAVIGATIONAL AND METEOROLOGICAL

WARNINGS AND URGENT INFORMATION TO SHIPS (NAVTEX)

1 INTRODUCTION

1.1 The equipment, in addition to meeting the requirements of the Radio Regulations, the
provisions of Recommendation ITU-R M.540 applicable to shipborne equipment and the general
requirements set out in resolution A.694(17), should comply with the following performance
standards.

2 GENERAL

2.1 The equipment should comprise radio receivers, a signal processor and:

either

.1 an integrated printing device; or

1

.2 a dedicated display device

, printer output port and a non-volatile message

memory; or

.3 a connection to an integrated navigation system and a non-volatile message

memory.

3 CONTROLS AND INDICATORS

3.1 Details of the coverage areas and message categories which have been excluded by the
operator from reception and/or display should be readily available.

4 RECEIVERS

4.1 The equipment should contain one receiver operating on the frequency prescribed by the
Radio Regulations for the International NAVTEX System. The equipment should contain a
second receiver capable of working at the same time as the first one on at least two other
frequencies recognised for the transmission of NAVTEX information. The first receiver should
have priority in the display or printing of received information. Printing or displaying of
messages from one receiver should not prevent reception by the other receiver.

4.2 The receiver sensitivity should be such that for a source with an e.m.f. of 2µV in series
with a non-reactive impedance of 50 Ω, the character error rate is below 4%.

1

Where there is no printer, the dedicated display device should be located in the position from which the ship is

normally navigated.

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ANNEX 10

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5 DISPLAY DEVICE AND PRINTER

5.1 The display device and/or printer should be able to display a minimum of 32 characters
per line.

If a dedicated display device is used, the following requirements should be met:

5.2

.1 an indication of newly received unsuppressed messages should be immediately

displayed until acknowledged or until 24 hours after receipt; and

.2 newly received unsuppressed messages should also be displayed.

5.3 The display device should be able to display at least 16 lines of message text.

5.4 The design and size of the display device should be such that displayed information is
easily read under all conditions by observers at normal working distances and viewing angles.

5.5 If automatic line feed entails division of a word, this should be indicated in the
displayed/printed text.

When displaying received messages on a display device, a clear indication of the end of a

5.6
message should be given by automatically adding line feeds after the message or including some
other form of delineation. The printer or printer output should automatically insert line feeds
after completing print of the received message.

5.7 The equipment should display/print an asterisk if the character is received corrupted.

5.8 Where the printer is not integrated, it should be possible to select the following data to be
output to a printer:

.1 all messages as they are received;

.2 all messages stored in the message memory;

.3 all messages received on specified frequencies, from specified locations or having

specified message designators;

.4 all messages currently displayed; and

.5 individual messages selected from those appearing on the display.

6 STORAGE

6.1 Non-volatile message memory

6.1.1 For each receiver fitted it should be possible to record at least 200 messages of average
length 500 characters (printable and non-printable) in non-volatile message memory. It should
not be possible for the user to erase messages from memory. When the memory is full, the oldest
messages should be overwritten by new messages.

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