significant wave height

Noun

 * 1)  A standardized measure of trough-to-crest wave height calculated for the needs of seafarers; exact mathematical definition has varied over time and currently it is defined as four times the standard deviation of the surface elevation.

Translations

 * Finnish: merkitsevä aallonkorkeus
 * Norwegian:
 * Bokmål: signifikant bølgehøyde
 * Nynorsk: signifikant bølgjehøgd