REFERENCE
Surfboard Glossary
Plain-English explanations of the terms used across the lineup — rocker, bottom contours, rails, tail shapes, and the design language we use to describe how a board surfs. Built for customers learning the vocabulary, and as a reference for shapers building under our spec.
ROCKER
BOTTOM CONTOUR
- Continuous double concaveDouble concave running uninterrupted from nose to tail. Maintains drive through the entire ride —…
- Double concaveTwo parallel hollow channels in the back third of the board, split by a small ridge. Speeds water…
- Flat-blend zoneA short flat section between two contour types, like single concave to double concave. Smooths the…
- Single concaveA single hollow channel scooped into the bottom of the board. Funnels water under the board to…
- VeeA v-shape ridge running down the bottom of the board. Helps roll the board rail to rail with less…
RAILS
TAIL
- Round tailA tail with a smooth, continuous round curve. Holds a line through fast sections; pivots smoothly…
- Squash tailA tail with two soft corners and a flat-ish back edge. Modern HPSB default — generates pivot…
- Swallow tailA tail notched into two points (a v-shape cut out). Adds rail bite and drive, classic on twin fins…