Contents 



Preface v 



1 — Introduction 1 



Background 1 



Purpose 3 



2— The Model 6 



Model Design 6 



Experiment Facilities and Equipment 7 



Selected Study Conditions 8 



Experiment Procedures 9 



Model Breakwater Construction 12 



Reporting Model Observations 13 



3— Results 14 



Introduction 14 



Plan 1 14 



Plan 1A 14 



Plan IB 16 



Plan 1C 16 



Plan 2 19 



Plan 2A 19 



Plan 2B 22 



Plan 2C 22 



Plan 2D 22 



Overtopping 25 



Summary 25 



4 — Risk Considerations 28 



Wave Conditions 28 



Armor Unit Selection 28 



5 — Summary 30 



Results 30 



Toe Trench Construction 31 



References 33 



