British royals Prince William and wife Kate plan to go jet boating and sailing during an adventurous trip Down Under.

The Duke and Duchess of Cambridge, accompanied by seven-month old son Prince George, plan to spend three weeks in Australia and New Zealand next month, according to a Kensington Palace announcement Monday.

In 1983, when Prince William was nine months old, he went with his parents on their official tour of the same two countries.

In New Zealand, which is known for its high-adrenaline tourist activities, the royal couple is planning to take a ride on a jet boat on the Shotover River in Queenstown and to try match racing on America's Cup sailboats. They'll also watch a rugby tournament as well as participating in the more traditional rounds of meetings, events and memorials.

In Australia, the couple plans to visit Uluru, the stunning Outback sandstone formation that's also known as Ayers Rock.

The trip will be Kate's first time to either country.

Prince William last visited New Zealand following the Christchurch earthquake. On this visit, the couple will visit Christchurch together and view the city's rebuilding progress.

Prince William last visited Australia in March 2011, the same month he was last in New Zealand.

With files from CBC