ORS 137.765: Sexually violent dangerous offenders; definitions; mandatory lifetime post-prison supervision.

(1) As used in this section:

      (a) “History of sexual assault” means that a person has engaged in unlawful sexual conduct that:

      (A) Was not committed as part of the same criminal episode as the crime for which the person is currently being sentenced; and

      (B) Seriously endangered the life or safety of another person or involved a victim under 12 years of age.

      (b) “Sexually violent dangerous offender” means a person who has psychopathic personality features, sexually deviant arousal patterns or interests and a history of sexual assault and presents a substantial probability of committing a crime listed in subsection (3) of this section.

      (2) Notwithstanding ORS 161.605, when a person is convicted of a crime listed in subsection (3) of this section, in addition to any sentence of imprisonment required by law, a court shall impose a period of post-prison supervision that extends for the life of the person if:

      (a) The person was 18 years of age or older at the time the person committed the crime; and

      (b) The person is a sexually violent dangerous offender.

      (3) The crimes to which subsection (2) of this section applies are:

      (a) Rape in the first degree and sodomy in the first degree if the victim was:

      (A) Subjected to forcible compulsion by the person;

      (B) Under 12 years of age; or

      (C) Incapable of consent by reason of mental incapacitation, physical helplessness or incapability of appraising the nature of the victim’s conduct;

      (b) Unlawful sexual penetration in the first degree; and

      (c) An attempt to commit a crime listed in paragraph (a) or (b) of this subsection.