AIS, if fitted, shall remain on and operational at all times and may only be switched off if the skipper considers this necessary in the interests of safety or security of the vessel.
Os oes system adnabod awtomatig wedi'i gosod dylai fod ar waith ac yn weithredol ar bob adeg, a dim ond os yw'r meistr o'r farn bod angen gwneud hynny at ddibenion diogelwch y dylid ei diffodd.