Regulation
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Interpretations
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II-2/21.4.3
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Interpretation 22
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Navigational systems
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Equipment essential for navigation, position
fixing and detection of risk of collision should be available. The following
equipment should be available as a minimum:
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a) a properly adjusted standard magnetic compass
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b) a Receiver for a global navigation satellite
system or a terrestrial radionavigation system
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c) a 9 GHz radar
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d) Electronic Chart Display and Information System
(ECDIS) or an appropriate folio of paper nautical charts and
publications
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e) Whistle
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f) Navigation lights
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g) Internal communications with engine control room
and steering gear
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h) a pelorus or Compass bearing device to take
bearings
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j) Means of correcting heading and bearings to true at
all times
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The ship should be capable of displaying the
proper light configuration in compliance with the International Regulations for Preventing Collisions at Sea in
force.
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II-2/21.4.6
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Interpretation 27
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External communication
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The ship should be capable of communicating via
the GMDSS or the VHF Marine and Air Band distress frequencies, even if the
main GMDSS equipment is lost.
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The external communication may be achieved by
additional fixed means or portable means installed in the same area as the
navigation and manoeuvring equipment.
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