My Bag

Birdwell Blog

Birth Of The Thruster
Dazzling Blue #51

We take for granted that the tri-fin is the most common surfboard in the lineup. It wasn’t always like this. Throughout the ‘70s it was singles and twins. Single-fins had great holding power, but lacked squirt and speed in small waves. Twin-fins dashed and zipped and zapped, but had the tendency to slide out when you didn’t want them to. Many surfers of the era rode twinnies in small surf, and stepped up to singles when it was bigger. But the transition from one design to the other was a hurdle.

Enter Australian Simon Anderson, a surfer/shaper on the IPS World Tour, where contests were often held in small, weak waves. In October 1980, he noticed that fellow Aussie surfer/shaper Frank Williams had placed a small half-moon fin near the tail of his twin-fin as a stabilizer. Simon was inspired. He made himself a square-tailed board with three like-sized fins, all smaller than those used on a twin-fin. He called his new design the Thruster.

“It was obvious from the beginning that it was a huge leap forward,” remembers Simon. “But I had a little bit of trouble convincing other people. So I figured that maybe it wasn’t going to be that big.”

Simon showed up to the 1981 Bells Easter Classic with his new Thruster. In 12-15 foot waves, he won. Then, a couple weeks later, he won the Surfabout. Then, later that season, he won the Pipeline Masters. It was clear that Simon’s new design was the biggest breakthrough of the year. Twin-fin and single-fin surfers converted to Thrusters. Simon was named “Surfer of the Year” by Surfing magazine in 1981, and inducted into the Australian Hall of Fame in 1989. Surfer magazine listed him as the eighth most influential surfer of the 20th century. And today, two and a half decades later, the tri-fin is everywhere.

New to Birdwell?

ENTER your email address, and we’ll send
you an invite for 10% off your first purchase.

Four persons on a rock wearing Birdwell jackets and Birdwell board shorts

We’re continuing Birdwell’s Southern California tradition making purpose-built apparel and accessories.

Sign up for our newsletter to be the first to know when products are introduced to our collection and of hand cut and sewn goods.

Stay updated on our latest news, special events, and new arrivals.