Haw. Code R. § 13-252-2
The operator of any vessel or surfboard involved in a collision, accident, or other casualty resulting in injury to or death of any person or damage to any vessel or surfboard operated or attended by any person shall, so far as can be accomplished without serious danger to the operator's own life, vessel, crew, and passengers, render to other persons affected by the collision, accident, or other casualty that assistance as may be practicable and as may be necessary in order to save them from or minimize any danger caused by the accident, and shall give the operator's name, address, and the registration number of the vessel (if applicable) being operated, to the person struck or the operator, occupant of, or person attending any vessel or surfboard struck.
Haw. Code R. § 13-252-2