Hawaii Revised Statutes Division 1. Government § 200-28

(a) An operator involved in a boating accident, if and so far as the operator can do so without serious danger to the operator's own vessel, or person aboard, shall render such assistance as may be practicable and necessary to other persons and any property in order to save them from danger caused by the accident. The operator shall also make every reasonable effort to identify oneself by giving the operator's name and address and the identification of the vessel the operator was operating to:

It shall further be the operator's duty to reasonably cooperate with all duly authorized personnel of governmental agencies investigating the accident.

(b) Any person who renders assistance in compliance with subsection (a) and any person who in good faith without remuneration or expectation of remuneration renders assistance at the scene of a vessel collision, accident, or other casualty without objection of any person assisted, shall not be liable for any civil damages resulting from the person's acts or omissions in providing or arranging towage, medical treatment, or other assistance, except for damages as may result from the person's gross negligence or wanton acts or omissions.