Associated equipment means:
(1) Any system, part, or component of a boat as originally manufactured or any similar part or component manufactured or sold for replacement, repair, or improvement of such system, part, or component;
(2) Any accessory or equipment for, or appurtenance to, a boat; and
(3) Any marine safety article, accessory, or equipment intended for use by a person on board a boat; but
(4) Excluding radio equipment.