The 5th annual Allianz Perfect Chapter powered by&nbsp;Quiksilver, the original one-day barrel-oriented surfing competition taking place in&nbsp;Portugal every winter, with a&nbsp;holding period raging from January 17th to March 17th, the event will gather some of the&nbsp;best tube riders in the world at the famous praia do Norte (Nazaré) for a full day of&nbsp;competition in perfect, hollow waves.