Australia dethroned the West Indies and booked a place in Saturday-s Women-s World Twenty20 final with a crushing 71-run victory in the first semi-final yesterday at the Sir Vivian Richards Stadium here.

Stunned by the Caribbean side in the 2016 final in Kolkata, the three-time champions were at their most ruthless to the dismay of a huge home crowd as they reached 142 for five batting first on a turgid pitch and then routed the West Indies for just 71 off 17.3 overs.