16.1 It should be possible to operate ECDIS and
all equipment necessary for its normal functioning when supplied by
an emergency source of electrical power in accordance with the appropriate
requirements of chapter II-1 of the
1974 SOLAS Convention, as amended.
16.2 Changing from one source of power supply
to another or any interruption of the supply for a period of up to
45 seconds should not require the equipment to be manually re-initialized.