RECALLING Article 15(j) of the Convention on the
International Maritime Organization concerning the functions of the Assembly in relation
to regulations and guidelines concerning maritime safety,
RECALLING ALSO resolution MSC.36(63), by which the Maritime Safety
Committee, on 20 May 1994, adopted the International Code of Safety for High-Speed Craft
RECALLING FURTHER resolution 1 of the
Conference of Contracting Governments to. the International Convention for the Safety of
Life at Sea (SOLAS), 8974, by which the Conference, on 24 May 1994, adopted amendments
to the 1974 SOLAS Convention, including a new chapter X on safety measures for
high-speed craft, which makes the provisions of the HSC Code mandatory under that
Convention for all such craft constructed on or after 1 January 1996,
BEARING IN MIND section 13.13 of the HSC Code Which requires that
all navigational equipment to which chapter 13 applies should conform to performance
standards not inferior to those adopted by the organization,
HAVING CONSIDERED the recommendation made by the Maritime Safety
Committee at its sixty-fourth Session,
ADOPTS the Recommendation on Performance Standards for Automatic Steering Aids
(Automatic Pilots) for High-Speed [raft set out in the annex to the present resolution;
2. RECOMMENDS Governments to ensure that
automatic steering aids (automatic pilots) required to be carried on high-speed craft
conform to performance standards not inferior to those set out in the annex to the
3. REQUESTS the Maritime
Safety Committee to keep these Performance Standards under review and to adopt
amendments thereto, as necessary.
Annex Recommendation on Performance Standards for Automatic Steering aids(automatic pilots) for High-Speed Craft
In addition to the general requirements
contained in resolution A.694(17), automatic steering aids (automatic pilots)
installed in craft operating under the following conditions:
- speed exceeding
30 knots and up to 70 knots;.
- maximum rate of turn 20°/s;
- normal range of operation between 70° N and 70° S should, as required
by chapter 13 of the HSC Code, comply with the minimum performance requirements
specified in these standards.
The automatic steering aid (automatic pilot) should, within a speed
range of up to 30 knots, comply with resolution A.342(IX), and within a speed range
of 30 knots to 70 knots should comply with the requirements of this
2.1 Within limits related to the craft's
manoeuvrability, the automatic steering aid, in conjunction with its source of
heading information, should enable a craft to keep within ±2.0°of a preset course.
2.2 The automatic steering aid
equipment should be capable of manual or automatic adjustment to different steering
characteristics of the craft under various weather and loading conditions.
2.3 The automatic steering aid should
be connected to the gyro-compass if a gyro-compass is provided. Otherwise it should
be electronically connected to the magnetic compass.
2.4 A qualitative description of the effects of the
automatic steering aid errors due to high speed, accelerations, course changes, sea
state, etc., and a qualitative description of corresponding errors in other
navigational aids, should be provided to the user.
3 Change-over from automatic to manual steering and vice versa
3.1 Change-over from automatic to manual steering
and vice versa should be possible at any rudder position by means of a bumpless
3.2 Change-over from
automatic to manual steering should be possible under any conditions, including any
failure in the automatic control system.
3.3 When changing over from manual to automatic steering, the
automatic steering aid (automatic pilot) should take over the actual heading as the
preset course. Any alteration of the preset course should not be possible without
action by the craft's personnel.
Change-over controls should be located close to each other in the immediate vicinity
of the main steering or conning position.
3.5 Adequate indication should be provided to show which method of
steering is in operation at a particular moment.
3.6 The installation should include manual steering with an override
4 Alarms signalling facilities
4.1 Alarm signals, both audible and visual to the
navigator on watch, should be provided in order to indicate failure or a reduction
in the power supply to the automatic steering aid, which would affect the safe
operation of the equipment.
course monitor should be provided which operates a clearly audible "off-course"
alarm signal after a course deviation of a preset amount from the ordered course.
4.3 The information required to
actuate the course monitor should be provided from an independent source.
4.4 The automatic steering aid should
provide an indication when any input from an external sensor is absent. The
automatic steering aid should also repeat any alarm or status warnings concerning
the quality of the input data from its external sensors which may influence its
4.5 The alarm signal
facilities should be fitted near the steering or conning position.
5.1 The automatic steering aid should be provided
with automatic and manually operated controls for operational use to adjust the
craft's steering performance to take account of the effects of weather.
5.2 The sense of the control of the
automatic steering aid should be such as to ensure altering course to starboard by
turning the course setting control clockwise. If the control is digital then
provision should also be made for keying in the required turn sense. Normal
alterations of course should be possible by one adjustment only of the course
5.3 Except for the
course setting control, the actuation of any other control should not significantly
affect the course of the craft.
Additional controls at remote positions should comply with the provisions of these
automatic steering aid should be able to perform turns within the turning capability
of the craft based either on a preset turning radius or a preset rate of
6 Rudder angle limitation
Means should be incorporated in the equipment to enable rudder
angle limitation in the automatic mode of operation. Means should also be available
to indicate when the angle of limitation has been reached.
7 Permitted yaw
Means should be incorporated to prevent unnecessary activation
of the rudder due to normal yaw motion.
The automatic steering aid should provide interface facilities
conforming to relevant international marine interface standards.*
* Refer to IEC 1162:1994.