3.For the purposes of this Annex, a day present within the area and absent from port shall be:U.K.
(a)
the 24-hour period between 00:00 hours of a calendar day and 24:00 hours of the same calendar day or any part of such a period during which a vessel is present within the area defined in point 2 and absent from port, or
(b)
any continuous period of 24 hours as recorded in the EC logbook during which a vessel is present within the area defined in point 2 and absent from port or any part of any such time period.
A Member State which wishes to employ the definition of a day present within the area and absent from port laid down under point (b) shall notify the Commission before 1 February 2005 of the means of monitoring the activities of a vessel to ensure compliance with the conditions laid down in point (b).