Low-crest breakwaters, hydraulic performance and stability

The research reported advances design methods for low crest and submerged breakwaters. This report reviews techniques available to predict wave transmission and overtopping effects and armour displacement. Hydraulic model test results obtained both at Hydraulics Research and in other labs are presented graphically in terms of appropriate non-dimensional parameters. Measurements of armour movement under random waves have also been analysed. The results have been presented graphically in terms of non-dimensional stability numbers.