# Thruster

> A board with three fins, the most common setup on modern shortboards.

**What "thruster" means in surfing:** A board with three fins, the most common setup on modern shortboards.

**Also said:** Tri fin

**Category:** Gear

## Related words

- [Twin fin](https://surfslang.com/twin-fin): A board with two fins, fast and loose in small waves.
- [Quad](https://surfslang.com/quad): A board with four fins, giving drive and hold in fast or hollow waves.

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Source: [Thruster](https://surfslang.com/thruster) on Surfslang.com, the surf slang glossary. Full glossary: https://surfslang.com/llms.txt