General
double up
What does double up mean?
When two waves combine to form a single bigger, more powerful wave, often heaving and hard to read.
"A double-up jacked out of deep water and threw a monstrous lip."
Origin
Descriptive surf term for waves that 'double up' as they merge.
Frequently asked questions
What is a 'double up' in surfing?
It's when two waves merge into one bigger, heavier wave. The combined power makes it jack up suddenly and heave, so it's tricky and hard to read.
Why are double-ups dangerous?
Because the extra energy makes the wave break harder and more unpredictably than a normal wave, often throwing a heavy lip that can put surfers over the falls.
How does a double up form?
When two waves in a set line up and overlap, their energy combines and stacks into a single, more powerful wave.
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