Douglas Sea Scale
Escala Douglas
- Date
- c. 1920 · confidence low
- Place
- United Kingdom
- Credited to
- Percy Douglas
- Field
- Knowledge & symbols
What it is
Ten-degree scale for measuring wave height and swell in maritime weather observations, developed by Royal Navy officer Percy Douglas.
What it led to
- International standardization of maritime weather observation
- Complement to the Beaufort wind scale
- Modern maritime weather bulletins
- Adoption by national weather services