CONTENTS 



FIGURES — Continued 



Page 

 2-46 Contours of equal diffraction coefficient gap width = 1.64 wave- 

 lengths 2-95 



2-47 Contours of equal diffraction coefficient gap width = 1.78 wave- 

 lengths 2-96 



2-48 Contours of equal diffraction coefficient gap width = 2 wave- 

 lengths 2-96 



2-49 Contours of equal diffraction coefficient gap width = 2.50 wave- 

 lengths 2-97 



2-50 Contours of equal diffraction coefficient gapth width = 2.95 wave- 

 lengths 2-97 



2-51 Contours of equal diffraction coefficient gap width = 3.82 wave- 

 lengths 2-98 



2-52 Contours of equal diffraction coefficient gap width = 5 wave- 

 lengths 2-98 



2-53 Diffraction for breakwater gapth of width > 5L 2-99 



2-54 Wave incidence oblique to breakwater gap 2-100 



2-55 Diffraction for a breakwater gap of one wavelength width where 



<() = 0° and 15° 2-101 



2-56 Diffraction for a breakwater gap of one wavelength width where 



(j) = 30° and 45° 2-102 



2-57 Diffraction for a breakwater gap of one wavelength width where 



(J) = 60° and 75° 2-103 



2-58 Diffractions diagram for a gap of two wavelengths and a 45° 

 approach compared with that for a gap width /2 wavelengths 

 with a 90° approach 2-104 



2-59 Approximate method for computing wave diffraction around an off- 

 shore breakwater 2-106 



2-60 Wave diffraction pattern behind an offshore breakwater three wave- 

 lengths long for waves approaching at a 30° angle 2-108 



2-61 Single breakwater, refraction-diffraction combined 2-110 



2-62 Wave reflection at Hamlin Beach, New York 2-111 



2-63 Standing wave (clapotis) system, perfect reflection from a 



vertical barrier, linear theory 2-114 



