for the Union certificate of qualification as a boatman: 540 days of navigation time, including at least 180 days in inland navigation;
i gcomhair teastais cháilíochta an Aontais mar bhádóir: 540 lá d’am loingseoireachta, lena n-áirítear 180 lá ar a laghad de loingseoireacht intíre;