Code of Federal Regulations Title 33. Navigation and Navigable Waters § 33.401.13 Hand lines

(a) Be made of material acceptable to the Manager and the Corporation;

(b) Be of uniform thickness and have a diameter of not less than 12 mm and not more than 18 mm and a minimum length of 30 m. The ends of the lines shall be back spliced or tapered;  and

(c) Not be weighted or have knotted ends.