A hospital security order equivalent to nine years' imprisonment with a six-and-a-half year non-parole period is not manifestly excessive for manslaughter by unlawful and dangerous act where the offender suffered from schizophrenia but had an extensive criminal history involving violence, as the sentencing judge is entitled to weigh community protection against the mitigatory effect of mental illness. The increase in the maximum penalty for manslaughter from 15 to 20 years in 1997 may affect the comparability of earlier sentencing decisions.
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