12 I agree that it is not clear whether the sentencing judge did intend to impose a disproportionate sentence pursuant to the provisions of s.6D(b). The discretion to do so will rarely be exercised.[1] In the present case the sentencing judge identified evidence that suggested that the appellant represented a continuing danger to the community and said that he was authorised by the Act to impose a disproportionate sentence, but he did not say that he was imposing a disproportionate sentence. He said only that the statutory provisions in both paragraphs (a) and (b) of s.6D were "an important consideration in relation to the sentences I shall impose".
13 Further, if his Honour did impose a disproportionate sentence or intended to, he failed to make any assessment as to whether the appellant would remain a danger to the community beyond the term of a proportionate sentence. I am not confident that such a finding was necessarily implicit in the sentencing remarks. In any event, the finding that the appellant would represent a danger to the community at the end of a proportionate sentence, a finding that was required to be made according to the standard of proof beyond reasonable doubt, should have been made expressly.
14 Counsel for the respondent conceded that the sentencing judge erred in the way in which he dealt with the provisions of Part 2A of the Act. Accordingly, the sentencing discretion has been re-opened.
15 The appellant was able to rely upon mitigating factors of some weight: his admissions to the police, his pleas of guilty, his relative youth, his likely mental disorder, probably due to his disturbed upbringing, and the fact that he is in protective custody. Nevertheless the seriousness of the crimes and the appellant's proclivities and fragile mental state in my opinion lead to the result that a stern sentence is required. The sentence which I consider appropriate and proportionate to the gravity of the offence is one which affords, in my view, sufficient protection to the community. I do not think it is necessary to impose a disproportionate sentence in order to achieve the principal purpose for which the sentence is imposed. I would re-sentence the appellant to be imprisoned for a term of five years on count 1, to a term of four years on count 2, to a term of two years on count 3 and to a term of six years on count 4. I would order that two years of the sentence imposed on count 1 and one year of the sentence imposed on count 3 be served cumulatively on each other and on the sentence imposed on count 4. Otherwise, the sentences are to be served concurrently. The total effective sentence is nine years' imprisonment. I would fix a non-parole period of six years. In fixing the non-parole period, amongst other things, I am conscious of the age of the appellant and also that his prospects of successful rehabilitation may become clearer with the passage of time.