In accordance with the Act and Regulation of the Department of Fisheries Malaysia, each vessel/boat used for fishing must be licensed. In your case, even for your own use they need to be licensed. But perhaps if you are not a genuine or full-time fisherman, no registration card and licence for sampan or outboard engines are released anymore.
Therefore it is advisable that you obtain a licence from the Marine Department for recreational purposes. You also can go to the nearest District Fisheries Office/Marine Department for advice.