Wave Size | Height (metres) | Effect |
---|---|---|
Flat | 0-0.1m | No waves breaking on beach |
Small | 0.1-0.5m | Slight waves breaking on beach |
Medium | 0.5-1.25m | Waves rock buoys and small craft |
Large | 1.25-2.5m | Sea becoming furrowed |
X-Large | 2.5m+ | Sea deeply furrowed |