(1) Any person who operates a power-craft, water-ski, surf-board, water-sleigh or other towed object of a similar nature within the territorial sea of this Island in a manner which is dangerous to navigation or to the life or limb of any other person, having regard to all the circumstances including the nature and condition of that sea and the use that at the time is or might reasonably be expected to be made of that sea, is liable on summary conviction to a fine not exceeding $500 and, in default of payment, to imprisonment for a term not exceeding 6 months.