CONTENTS 



FIGURES — Continued 



Page 



33 Two-dimensional model tests of a chain mooring system, catamaran-type floating 



breakwater, Oak Harbor, Washington 66 



34 Wave transmission tests of the chain mooring system, catamaran-type floating breakwater, 



Oak Harbor, Washington. 67 



35 Two-dimensional model tests of pile mooring system, catamaran-type floating breakwater, 



Oak Harbor, Washington 68 



36 Wave transmission tests of the pile mooring system, catamaran-type floating breakwater, 



Oak Harbor, Washington 69 



37 Two-dimensional experimental tests of chain anchor forces on seaside of catamaran-type 



floating breakwater 71 



38 Two-dimensional experimental tests of pile anchor forces on seaside of catamaran-type 



floating breakwater 72 



39 Alaska-type floating breakwater developed by State of Alaska, Department of Public Works.... 73 



40 Incident wave spectra, SCrw), transmitted wave spectra, S(n t ), and coefficient of 



transmission, C t , from prototype field investigation of Alaska-type floating breakwater 



at Tenakee Springs, Alaska 75 



41 Module of Alaska-type floating breakwater used in two-dimensional experimental study at 



a length of 120 feet, width of 21 feet, depth of 6 feet prototype dimensions..... 77 



42 Details of Alaska-type floating breakwater used in two-dimensional experimental study, 



Olympia Harbor, Washington 78 



43 Two-dimensional experimental study of Alaska-type floating breakwater mooring chain 



arrangement, Olympia Harbor, Washington 79 



44 Coefficient of transmission, C c , versus relative breakwater width, W/L, results from 



two-dimensional experimental investigation of Alaska-type floating breakwater, Olympia 



Harbor, Washi ngton. 80 



45 Friday Harbor, Washington 82 



46 Cross section of floating breakwater at Friday Harbor, Washington 83 



47 Average transmission coefficients, Friday Harbor, Washington 84 



48 Canadian caisson floating breakwater tested in three-dimensional wave basin... 85 



49 Effect of relative breakwater width, W/L, on wave height attenuation, Canadian caisson 



floating breakwater 86 



50 Anchor forces developed by Canadian caisson floating breakwater 87 



51 Thompson floating breakwater adaptation of floating wharf or dock for marina application.... 89 



52 Connecting unit used to attach modules of Alaska-type floating breakwater 92 



53 Connection redesign for concrete pontoon units 92 



54 Tentative connection design of a rubber unit which serves as a bumper in compression and 



a restraining unit in tension 93 



55 Geometry of barge under consideration as sloping-float breakwater 97 



56 Sloping-float breakwater two-dimensional experimental tests 99 



57 Two-dimensional experimental investigation of effect of incident wave height, H, , on 



coefficient of transmission, C t , for sloping-float breakwater with no bottom clearance 



at a 25-foot water depth 100 



