To get a more detailed, complete view on this issue, a lengthy Environmental Impact Study was developed last year.
http://www.nepa.gov.jm/eias/Westmore..._FINAL-Nov.pdf
Interesting pages include page 412 (defining the aspects of the beach nourishment) and page 333 which shows the size and locations of the two proposed breakwaters.
Another interesting study done last year is the Natural Resource Valuation Considerations for the Negril Breakwater Project.
http://www.nepa.gov.jm/eias/Westmore...RV%20Final.pdf
The Conclusion section (page 34) is a very interesting read.
