Surfers have been experimenting with fins ever since Tom Blake commandeered a keel off an abandoned speedboat and screwed it into the bottom of a paddleboard in 1935. In the century that followed, ...

A Marine with 2nd Reconnaissance Battalion, 2nd Marine Division conducts a 500 meter underwater swim with fins and a snorkel at the Courthouse Bay Training Tank aboard Marine Corps Base Camp Lejeune, ...

While a motorcycle might have massive tires, a laid-back touring stance, or dual chrome exhaust tips, one thing often stands out – the exposed engine. Highlighted with finned cylinders, the exposed ...

We may receive a commission on purchases made from links. One of the most distinctive elements in your motorcycle's engine compartment is the fin stack. These steel blades are used to help dissipate ...