Numbers shall be issued with a unique numbering system that includes at least three alfa-code letters corresponding to the flag of the towing vessel followed by three numbers.
Déanfar uimhreacha a eisiúint i gcomhréir le córas uimhrithe uathúil ina mbeidh trí uimhir ag leanúint na dtrí litir alfa-chóid a fhreagraíonn do bhratach na soithí tarraingthe.