The NSTA is the licensing authority for the Welsh inshore region, as well as the Welsh offshore region (12-200nm) (section 18(1), (2)(a) and (2)(d)).
Yr NSTA yw awdurdod trwyddedu rhanbarth glannau Cymru, yn ogystal â rhanbarth môr Cymru (12-200 milltir) (adrannau 18(1), (2)(a) a (2)(d)).