Datawell is manufacturer of the well-known Waverider which is considered to be the standard in wave measurement. Latest release is the Directional Waverider DWR4 with Acoustic Current Meter. Besides wave height and wave direction it measures sea surface current and updates it’s position every 10 mins.
Since 1998, RADAC B.V., develops and produces the WaveGuide. This very accurate radar level gauge measures wave height, wave direction, level and tide. It is demonstrated that in all wind and wave conditions the standard deviation for water level is only 1 cm. max. The WaveGuide is compact, robust and easy to install.