Haw. Rev. Stat. § 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:
(3) All operators of other vessels involved in the accident.
It shall further be the operator's duty to reasonably cooperate with all duly authorized personnel of governmental agencies investigating the accident.
[L 1991, c 272, pt of §2]