In order to ensure the avai lability of t he maintenance requirements spe cified in
SOLAS Reg. IV /15.7, combination of at least two of the fol lowing methods should be
taken as may be approved by t he flag admini strations, whil e taking into ac count the
recommend ation specifie d in IMO A.702(17):
duplic ation of equip ment;
• shore -based maintena nce; or
• at-s ea electronic m aintenance capa bility.
All ship s irrespective o f the methods used should ma ke all manufacture rs’ installat ion
manuals and maintenance manuals for all the equipment installed availa ble.
Adequate to ols, spare par ts and test eq uipment appropr iate to the met hods used
by the sh ip, as specified by the flag adm inistration sh ould be provided and readily
available o nboard.
MF/HF radiotelephone with
built-in
DSC/DSC Watch Receiver
Inmarsat-C Mobile Earth Station
NBDP Terminal
Ca r r i ag e / f un c t i on a l req u i r e me n t s f o r GM D S S
Inmarsat Solution
MF/HF Solution
Additional equipment to be installed on ships operating in the Sea Areas:
Maintenance requirement for ships operating in Sea Area
Functional requirements to be fulfilled by FELCOM18*:
Functional requirements to be fulfilled by FS-xx75* plus IB-585: Functional requirements to be
fulfilled by FELCOM18*:
◆
Transmission a nd reception of distress and s afety
comm unications usi ng direct-prin ting telegraphy
◆
Initiati on and receptio n of distress p riority cal ls
◆
Continuou s watch on shore -to-ship distres s alerts,
incl . those directed to speci ally defined geo graphical area
◆
Transmission a nd reception of general commun ications
usin g either radio telephony or dire ct printing te legraphy
◆
Distress and safety com munications on all distress a nd safety freque ncies
on M F and HF bands
usin g DSC usin g radiotelephony using dire ct printing te legraphy
◆
Continuou s DSC watch on 2,187.5 kHz, 8,814. 5 kHz, and on at least
one of the distress and safety fre quencies:
4,20 7.5 kHz, 6,312 kH z, 12,577 kHz or 16,804.5 kHz
◆
Trasnsmission and reception o f general radio communication s using
radi otelephony or di rect-printing telegraphy by MF/H F radio install ation
◆
Initiati on of the tran smission of
ship-to-s hore distress al ert by radio
servic es other than HF
◆
Distress and safety com munications usi ng
the following frequen cies:
• 2, 187.5 kHz using D SC and continu ous DSC watch
• 2, 182 kHz using ra diotelephony
1. VHF radio installation c apable of
trans mitting/receiving DSC on CH 70 as
well as radiotelephon y on CH 6, 13 an d
16 as w ell as contionu ous DSC
watch on CH 70 and either of the radio
insta llations listed as 2-a or 2-b below
should b e arranged onb oard:
An arrangement acceptable to
the flag administration should be
established to ensure adequate
support of the ship for the
maintenance and repair of the
radio installations, i.e., service
agreement with a capable service
provider covering the trading area
of the ship.
Adequate additional technical documentations, tools, spare parts and test equipment
consistent with radio installation and as approved by the flag administration should be
provided onboard so that the maintainer can perform tests and localize and repair faults in
the radio equipment while at sea.
The person who is to conduct at-sea electronic maintenance should either hold an
appropriate certificate as specified by the Radio Regulations or have equivalent at-sea
electronic maintenance qualifications as may be approved by the flag administration, taking
into account the reccomendation specified in Annex 5 of IMO A.703(17).
2-a. MF/HF radio installation for distress and
safety communications on the frequency
bands between 1,605 kHz and 4,000 kHz
and between 4,000 kHz and 27,500 kHz,
using DSC, radiotelephony and direct printing telegraphy. Continuous DSC watch
on 2,187.5 kHz, 8,814.5 kHz and on at least
one of the distress and safety frequencies:
4,207.5 kHz, 6,312 kHz, 12,577 kHz or
16,804.5 kHz is also required.
2-b. Inmarsat MES capable of
transmission/reception of distress and
safety communications using direct printing telegraphy, initiation/reception
of distress primary calls, continuous
watch on shore-to-ship distress
alerts, incl. those directed to specifically
defined geographical area, and
transmission/reception of general
communications using either
radiotelephony or direct-printing telegraphy
FELCOM18
Inmarsat-C Mobile Earth Station
FS-1575/2575/5075
FS-1575/2575/5075
MF/HF radiotelephone with
built-in
DSC/DSC Watch Receiver
FS-1575/2575/5075
IB-585
NBDP Terminal
IB-585
FELCOM18
Inmarsat-C Mobile Earth Station
FELCOM18
*It shou ld be possible that transmissi on of distress alerts be
initiate d from the naviga tion bridge.
*It shou ld be possible that transmissi on of distress alerts be
initiate d from the naviga tion bridge.
*It shou ld be possible that transmissi on
of dist ress alerts b e initiated from the
navigatio n bridge.
*It shou ld be possible that transmissi on of distress
alert s be initiated from the navigati on bridge.
Duplication of equipment
Shore-based maintenance At-sea electronic maintenance capability
Functional requirements to be fulfilled by FS-xx75*:
VHF radiotelephone with
built-in
DSC/DSC Watch Receiver
FM-8900S
O R
O R
Other functional requirements
Initiati on of transmis sion of ship-to -shore distress alerts* to be fulfilled by o ne of the followi ngs:
◆
406 MHz satellite EPIRB ◆ HF using DSC ◆ Inmarsat- C Mobile Ear th Station
*It should be poss ible that transm ission of dist ress alerts be initiated fro m the navigation bridge.
MF/HF radiotelephone with
built-in
DSC/DSC Watch Receiver
5 6