CONTENTS 



FIGURES — Continued 



Page 



98 Schematic of Wave-Guard scrap-tire floating breakwater mooring system 146 



99 Goodyear scrap-tire floating breakwater concept in operation at Dunkirk Harbor, New York... 148 



100 Wave-Maze scrap-tire floating breakwater concept protecting the east marina and northern 



section of Pier 39, San Francisco, California 149 



101 Two-dimensional model investigation of twin-log floating breakwater at Juneau, Alaska, 



Small Boat Basin No. 2 152 



102 Two-dimensional experimental investigation of twin-cylinder floating breakwater 154 



103 Twin-cylinder floating breakwater stability and natural periods of oscillation 155 



104 Effect of cylinder submergence, a /a , and relative water depth L/d, on 



transmission coefficient, C t , for twin-cylinder floating breakwater 155 



105 Effect of relative water depth, L/d, and initial wave steepness, R^/L, on transmission 



coefficient, C t , for twin-cylinder floating breakwater 156 



106 A-frame floating breakwater evaluated experimentally in both a three-dimensional and 



two-dimensional wave basin 157 



107 Total wave amplification downstream of A-frame, pontoon-type floating breakwater 158 



108 Effect of initial wave steepness, Hj/L, and relative breakwater width, L/L , on 



transmission coefficient, C t , for A-frame floating breakwater 160 



109 Effect of relative breakwater width, L/d, and relative water depth, L/d, on 



transmission coefficient, C t , for A-frame floating breakwater 161 



110 Effect of relative breakwater width, L/L , and relative depth of vertical curtain, 



h ,/d, on coefficient of transmission, C t , for A-frame floating breakwater 163 



111 Effect of relative breakwater width, L/L , and relative cylinder submergence, L /L , 



on transmission coefficient, C t , for four-cylinder A-frame floating breakwater 163 



112 Effect of relative breakwater width, L/L , on average and peak mooring force parameter, 



Fh /yH?L, for two-cylinder A-frame floating breakwater 164 



113 Effect of relative breakwater width, L/L , on average and peak mooring force parameter, 



Fh /yH|l, for four-cylinder A-frame floating breakwater.... 165 



114 Definitive sketch of a tethered-f loat breakwater 167 



115 Performance estimation of tethered-f loat breakwater at a theoretical 75-percent wave 



height reduction 170 



116 Performance estimation of tethered-f loat breakwater at a theoretical 50-percent wave 



height reduction 171 



117 Performance estimation of tethered-f loat breakwater at a theoretical 25-percent wave 



height reduction 171 



118 Comparison of normalized wave spectra for J0NSWAP spectra, Pierson-Moskowitz spectra, 



and modified spectra representative of that observed in nature 173 



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