ABSTRACT
Jarlan (1961) proposed the first concept of a perforated-wall vertical structure. It consists of one or more dissipative wave chambers having an exposed perforated-wall(s) and a rear impervious wall. Proof of concept was accomplished by the experimental research of Jarlan (1961) and Marks and Jarlan (1968). The so-called Jarlan-type (Jarlan, 1961) breakwater caisson had its first application in 1966 in Comeau Bay, Canada. In the coming years, several theoretical and experimental research studies have been carried out in order to analyse the hydraulic behaviour of these type of structures, namely with regards to wave reflection or wave energy dissipation, and the stability increase by the reduction of the wave force acting on the structure. Over the years, many have been built.
