(1) In addition to rule 17 , the holder of a mackerel fishing licence, acting under the authority of that licence, must not, from a fishing vessel that is equal to or greater than 25 metres, but less than or equal to 35 metres, in length, set or use a purse seine net in any of the waters specified in items 8 to 10 of Schedule 3 .Penalty: Grade 3 penalty.(2) Despite subrule (1) , the holder of a mackerel fishing licence may set or use a purse seine net, from a fishing vessel of a length referred to in that subrule, in the waters specified in items 8 to 10 of Schedule 3 if the licence is endorsed to that effect.