The IEE was undertaken in parallel during the design process.
The proposed detached breakwaters would not create erosion at adjacent beaches because (a)
the jetty at the southern boundary was so long that it had
completely blocked sediment transport from the south, and (b)
a series of existing detached breakwaters on the northern boundary
had halted alongshore sediment movement to the north. These
boundary structures acted like giant walls that contained the
morphological effects within the study area