This thesis presents an original theoretical investigation, based on diffraction theory (extended
for permeable structures by Sollitt & Cross ), of the performance of segmented rubble
mound breakwaters. The amount of protection offered by such a breakwater is a function of
the rubble construction (characterized by porosity and permeability), geometry and spacing
of segments as well as depending on the the characteristics of the incident wave field. To
explore the influence of these factors on the performance of these breakwaters, the diffraction
by three related structures have been considered :a periodic array of impermeable blocks, a
single continuous rectangular section permeable structure and a periodic array of permeable
blocks in shallow water.
A Doctoral Thesis. Submitted in partial fulfillment of the requirements for the award of Doctor of Philosophy of Loughborough University.