Surfwear maker Billabong International Ltd has posted a 12.3 per cent year-on-year increase in half-yearly net interim profit to AU$40.62 million.

The Australian company also reported a 5.9 per cent year-on-year rise in revenue to AU$307.05m for the six-month period, which ended on December 31, 2003.

According to the company, revenue growth was recorded in all major international territories during the half, despite being negatively impacted by the stronger Australian dollar against the US dollar and the euro.

Best performing international markets for Billabong over the six months were the United States, which posted revenue growth of 27 per cent year-on-year, and Brazil, which reported revenue growth of more than 50 per cent year-on-year.