His two victims, whose victim impact statements were read to the court, described how he had used fear and power to abuse them.
"I trusted you and you destroyed so much of me," one victim said.
Crown solicitor Anna Pollett argued a minimum non-parole period should be imposed as Morine had shown "little, if any remorse" and lacked insight into his offending.
Morine was assessed at medium risk of reoffending, she said.
Pollett said no discounts for age should be given in this case.
Morine's lawyer Matthew Bates said his client had written letters of apology and struggled to understand his own offending rather than lacking insight.
Bates argued a non-parole period was not required and discounts should be given for his client's age, his medical problems, and the fact that he would face a tougher time in prison than other prisoners.
Judge Christopher Harding told Morine that this was extremely serious and prolonged offending, which clearly had a significant impact on the victims and their families.
A minimum non-parole period of four years was required in this case, particularly given Morine's lack of insight and limited remorse shown, the judge said.
