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engaged on voyages in all sea areas shall be provided with the radio
installations and equipment required by regulation 10.2, except that theequipment required by regulation 10.2.3.2 shall not be accepted as an
alternative to that required by regulation 10.2.3.1, which shall always be
provided. In addition, ships engaged on voyages in all sea areas shall
comply with the requirements of regulation 10.3.
2 The Administration may exempt ships constructed before 1 February
1997, and engaged exclusively on voyages within sea areas A2, A3 and A4,from the requirements of regulations 7.1.1.1 and 7.1.2 provided such ships
maintain, when practicable, a continuous listening watch on VHF channel
16. This watch shall be kept at the position from which the ship is
normally navigated.
Regulation 12 Watches
1 Every ship, while at sea, shall maintain a continuous watch:
.1 on VHF DSC channel 70, if the ship, in accordance with the
requirements of regulation 7.1.2, is fitted with a VHF radio installation;
.2 on the distress and safety DSC frequency 2,187.5 kHz, if the
ship, in accordance with the requirements of regulation 9.1.2 or 10.1.3,is fitted with an MF radio installation;
.3 on the distress and safety DSC frequencies 2,187.5 kHz and
8,414.5 kHz and also on at least one of the distress and safety DSC
frequencies 4,207.5 kHz, 6,312 kHz, 12,577 kHz or 16,804.5 kHz,
appropriate to the time of day and the geographical position of the ship,
if the ship, in accordance with the requirements of regulation 10.2.2 or11.1, is fitted with an MF/HF radio installation. This watch may be keptby means of a scanning receiver;
.4 for satellite shore-to-ship distress alerts, if he ship, in
accordance with the requirements of regulation 10.1.1, is fitted with anINMARSAT ship earth station.
2 Every ship, while at sea, shall maintain a radio watch for
broadcasts of maritime safety information on the appropriate frequency of
frequencies on which such information is broadcast for the area in whichthe ship is navigating.
3 Until 1 February 1999 or until such other date as may be determined
by the Maritime Safety Committee, every ship while at sea shall maintain,
when practicable, a continuous listening watch on VHF channel 16. This
watch shall be kept at the position from which the ship is normally
navigated.
4 Until 1 February 1999 or until such other date as may be determined
by the Maritime Safety Committee, every ship required to carry a
radiotelephone watch receiver shall maintain, while at sea, a continuous
watch on the radiotelephone distress frequency 2,182 kHz. This watch shall
be kept at the position from which the ship is normally navigated.
Regulation 13 Sources of energy
1 There shall be available at all times, while the ship is at sea, a
supply of electrical energy sufficient to operate the radio installations
and to charge any batteries used as part of a reserve source or sources of
energy for the radio installations.
2 A reserve source or sources of energy shall be provided on every
ship, to supply radio installations, for the purpose of conducting
distress and safety radiocommunications, in the event of failure of the
ship''s main and emergency sources of electrical power. The reserve source
or sources of energy shall be capable of simultaneously operating the VHF
radio installation required by regulation 7.1.1 and, as appropriate for
the sea area or sea areas for which the ship is equipped, either the MF
radio installation required by regulation 9.1.1, the MF/HF radio
installation required by regulation 10.2.1 or 11.1, or the INMARSAT shipearth station required by regulation 10.1.1 and any of the additional
loads mentioned in paragraphs 4, 5 and 8 for a period of at least:
.1 one hour, on ships constructed on or after 1 February 1995; *
[* Note by the compilor of this volume:
Reference is made to the following MSC/Circ.583: PROPOSED AMENDMENTS
TO SOLAS REGULATIONS IV/13.2.1 to 13.2.3 Recommendation on reserve source
of energy]
1 At its sixtieth session (6 to 10 April 1992), the Maritime Safety
Committee approved, with a view to their adoption at its sixty-first
session, proposed amendments to SOLAS Regulations IV/13.2.1 to 13.2.3,
given at annex, being of the opinion that these were unintentional
oversights when the Organization was preparing and adopting the 1988 SOLAS
Amendments for the GMDSS.
2 Pending adoption of the proposed amendments, the Committee
recommended that Member Governments require cargo ships between 300 and
500 tons gross tonnage, to which the amendments apply, to be provided with
a reserve source of energy capable of providing for the operation of theequipment required by Regulation IV/13.2 for a period of at least six
hours.
ANNEX
Replace the existing text of paragraphs 2.1 to 2.3 by:
".1 one hour on ships provided with an emergency source of
electrical power, if such source of power complies fully with all relevant
provisions of Regulation II-1/42 or 43, including the supply of such power
to the radio installations; and
.2 six hours on ships not provided with an emergency source of
electrical power complying fully with all relevant provisions of
Regulation II-1/42 or 43, including the supply of such power to the radio
installations."]
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.2 one hour, on ships constructed before 1 February 1995, if the
emergency source of electrical power complies fully with all relevant
requirements of regulation II-1/42 or 43 including the requirements to
supply the radio installation; ** and
[** For guidance, the following formula is recommended for determining
the electrical load to be supplied by the reserve source of energy for
each radio installation required for distress conditions: 1/2 of the
current consumption necessary for transmission + the current consumptionnecessary for reception + current consumption of any additional loads.]
.3 six hours, on ships constructed before 1 February 1995, if the
emergency source of electrical power is not provided or does not comply
fully with all relevant requirements of regulation II-1/42 or 43 including
the requirements to supply the radio installations.**
[** For guidance, the following formula is recommended for determining
the electrical load to be supplied by the reserve source of energy for
each radio installation required for distress conditions: 1/2 of the
current consumption necessary for transmission + the current consumptionnecessary for reception + current consumption of any additional loads.]
The reserve source or sources of energy need not supply independent HF
and MF radio installations at the same time.
3 The reserve source or sources of energy shall be independent of the
propelling power of the ship and the ship''s electrical system.
4 Where, in addition to the VHF radio installation, two or more of the
other radio installations, referred to in paragraph 2, can be connectedto the reserve source or sources of energy, they shall be capable of
simultaneously supplying, for the period specified as appropriate, in
paragraph 2.1, 2.2 or 2.3, the VHF radio installation and:
.1 all other radio installations which can be connected to the
reserve source or sources of energy at the same time; or
.2 whichever of the other radio installations will consume the
most power, if only one of the other radio installations can be connected
to the reserve source or sources of energy at the same time as the VHF
radio installation.
5 The reserve source or sources of energy may be used to supply the
electrical lighting required by regulation 6.2.4.
6 Where a reserve source of energy consists of a rechargeable
accumulator battery or batteries:
.1 a means of automatically charging such batteries shall be
provided which shall be capable of recharging them to minimum capacity
requirements within 10 hours; and
.2 the capacity of the battery or batteries shall be checked,
using an appropriate method, *** at intervals not exceeding 12 months,
when the ship is not at sea.
[*** One method of checking the capacity of an accumulator battery is
to fully discharge and recharge the battery, using normal operating
current and period (e.g. 10 hours). Assessment of the charge condition can
be made at any time, but it should be done without significant dischargeof the battery when the ship is at sea.]
7 The siting and installation of accumulator batteries which provide a
reserve source of energy shall be such as to ensure:
.1 the highest degree of service;
.2 a reasonable lifetime;
.3 reasonable safety;
.4 that battery temperatures remain within the manufacturer''s
specifications whether under charge or idle; and
.5 that when fully charged, the batteries will provide at least
the minimum required hours of operation under all weather conditions.
8 If an uninterrupted input of information from the ship''s
navigational or other equipment to a radio installation required by thischapter is needed to ensure its proper performance, means shall be
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