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Power supply
Where the ship security alert system is powered from the ship’s main source of electrical power, it should, in addition, be possible to operate the system from an alternative source of power.
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Activation points
Activation points should be capable of being used on the navigation bridge and in other locations. They should be protected against inadvertent operation. It should not be necessary for the user to remove seals or to break any lid or cover in order to operate any control.
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Operation
The activation points should operate a radio system such that transmission of the security alert does not require any adjustment of the radio system, i.e. tuning of channels, setting of modes or menu options. Operation of the activation point should not cause any alarm or indication to be raised on the ship. The operation of the ship security alert system should not impair the functionality of the GMDSS installation.
