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code_of_practice_V3_2019

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9.5 RF COMMUNICATIONS INSTALLATION<br />

9.5.1 All radio communication equipment should be <strong>of</strong> a type which is approved by the relevant authority.<br />

9.5.2 VHF transmission and reception ranges are reliable only within the line <strong>of</strong> sight ranges <strong>of</strong> the aerials.<br />

9.5.3 Aerials should be mounted as high as is practicable to maximise performance. When the main aerial is fitted to<br />

a mast, which is equipped to carry sails, an emergency aerial should be provided.<br />

9.5.4 Masters, Owners and Operators should be aware <strong>of</strong> VHF coverage in the intended area <strong>of</strong> operation. Where the<br />

certainty <strong>of</strong> good VHF coverage in the UK coastal area is in doubt, Masters, Owners and Operators should seek<br />

advice from the Administration on whether Medium Frequency (MF) or other equipment with long range<br />

transmission capability should be carried. (i.e. Mobile Satellite Communications Systems, etc.).<br />

9.5.5 All radio installations should be:<br />

n Located to ensure the greatest possible degree <strong>of</strong> safety and operational availability;<br />

n Protected against the harmful effects <strong>of</strong> water, extremes <strong>of</strong> temperature and other adverse environmental<br />

conditions.<br />

9.5.6 Notwithstanding the provisions <strong>of</strong> Paragraph 9.4, when the electrical supply to radio equipment is from a battery,<br />

charging facilities (which are capable <strong>of</strong> recharging batteries to minimum capacity requirements within 10 hours)<br />

or a duplicate battery <strong>of</strong> capacity sufficient for the voyage should be provided.<br />

9.5.7 The battery electrical supply to radio equipment should be protected against flooding/swamping as far as practicable<br />

and arranged so that radio communications are not interrupted in adverse conditions. When the efficiency<br />

<strong>of</strong> the required protection against flooding/swamping cannot be guaranteed with batteries located below the freeboard<br />

deck, an efficiently protected battery electrical supply to the radio equipment should be provided above<br />

the freeboard deck.<br />

9.5.8 When fully charged, the batteries should provide at least the minimum required hours <strong>of</strong> operation to ensure<br />

effective use <strong>of</strong> the GMDSS installation.<br />

QinetiQ operations<br />

MASS UK Industry Conduct Principles and Code <strong>of</strong> Practice Version 3<br />

61

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