Aussie actress Rebel Wilson says she splurged on a boat despite having zero sailing experience and admits she's already crashed it.

Wilson said the boat was a Christmas present to herself, but it hasn't been easy sailing.

"I didn't realise how hard it is to own a boat. You have to learn how to use the boat, learn how to do ropes, learn how to park the boat, learn how to clean the boat.

"I didn't really quite think it through... I did have a crash, into my neighbour's boat."