11. Tuy?n v?n t?i th?y t? b? ra ??o bao g?m các tuy?n v?n t?i th?y t? b? ra ??o trong vùng bi?n Vi?t Nam ???c công b? theo quy ??nh c?a pháp lu?t. three. “tugboat” signifies a boat developed and registered to tow and support vessels in entering and leaving w