Hawaii Revised Statutes Division 2. Business § 462A-19

(1) Any vessel required by the laws of the United States of America to be under the direction and control of a federally licensed pilot;

(2) Public vessels of the United States of America;

(3) Fishing vessels that have been issued a fishery license or appropriately endorsed registry under the laws of the United States of America;

(4) Tugs or towboats of 1,600 gross tons or less which are registered in the United States if the master, mate, or operator is licensed in the United States and has made a minimum of six round trips into and out of the pilotage water which the vessel is traversing; or

(5) Vessels under 300 gross tons.