Time for a little bonding and boating! Brad Pitt, father of six with fiancee Angelina Jolie, enjoyed some quality time with son Pax in Sydney, Australia, on Monday, June 10. 

Pitt, 49, and his 9-year-old son were spotted boarding a police boat in Sydney Harbour Pier, which then took them to a yacht named Ghost. Wearing a tan blazer, gray T-shirt and khaki pants, Pitt waved to photographers as he guided Pax, dressed in a black hooded sweatshirt and shorts, to the dock.

PHOTOS: Brad Pitt and Angelina Jolie's love story

The actor is currently in Australia promoting his new action film, World War Z, which Pax and older brother Maddox, 11, were allowed to watch for the first time at the London premiere earlier this month.

PHOTOS: How the Jolie-Pitt kids have grown up

"My boys, they're big zombie fans," Pitt told Us Weekly at the June 2 premiere. "That's what first got me focused on the [Max Brooks] book and then the book started opening up other ideas . . ."

"It's just good summer fun," he added. "It's the most intense thing you're going to see all summer, I guarantee you."

PHOTOS: Brad Pitt's many movie looks

Last week, Pitt and kids Maddox, Pax, Zahara, 8, Shiloh, 7, and twins Vivienne and Knox, 4, enjoyed a family dinner out in Berlin to celebrate Jolie's 38th birthday. "He's such a wonderful man and a wonderful father," the actress, who recently underwent a preventative double mastectomy, told reporters of her fiance. "I'm very, very lucky." Pitt spent the weekend promoting World War Z by making surprise movie theater visits in L.A., Atlanta, Chicago, Austin and Philadelphia.

This article originally appeared on Usmagazine.com: Brad Pitt and Pax Jolie-Pitt Go Boating in Australia: Picture