scope:

Purpose. The purpose of the Coastal Engineering Manual (CEM) is to provide a comprehensive technical coastal engineering document. It includes the basic principles of coastal processes, methods for computing coastal planning and design parameters, and guidance on how to formulate and conduct studies in support of coastal flooding, shore protection, and navigation projects. This Change 2 to EM 1110-2-1100, 1 April2008, includes the following changes and updates:

a. Part I-1. References were checked and some were deleted (Engineer Manuals that are no longer in the USACE inventory).

b. Part I-4. Minor changes were made in the text to better reflect the contents of subsequent parts of the CEM.

c. Part II-I. Figure II-1-9 has been revised; Equations II-1-128, II-1-160, and II-1-161 have been corrected.

d. Part II-2. Equations II-2-4, II-2-5, and II-2-32 have been corrected along with other errors reported by various users.

e. Part II-5. References were checked and some were deleted (Engineer Manuals that are no longer in the USACE inventory).

f Part II-6. The value of"e" used in Eq. II-6-28 has been corrected.

g. Part II-7. The table of contents was corrected. A new section, II-7-11, Note to Users, Vessel Buoyancy, was added at the end ofthe chapter.

h. Part III-3. Corrections have been made to format and spelling. Different plots were added to Figures III-3-24 and III-3-26.

i. Part IV -1. Corrections have been made to references. j. Part V -1. Citation of an Engineer Regulation has been corrected.

k. Part V-2. Citation of references has been changed, web pages with sources of wind and wave data have been added. Some minor text changes have also been made.

l. Part V-3. Citations of unpublished reports or personal communications have been deleted, and links to other figures or parts of the CEM have been checked and corrected.

m. Part V -4. Minor text changes, corrections to references and Figure V -4-1.

n. Part V-5. Links to other parts of the CEM that were planned but never written have been deleted.

Applicability. This manual applies to all HQUSACE elements and all USACE commands having Civil Works and military design responsibilities.