FIGURES-Continued 



Page 



38 Flank drop-skirt on channel side of floating dock for short -period wave 



attenuation 77 



39 Tire wave-maze floating breakwaters 78 



40 Floating corrugated metal pipe breakwater, Detroit Harbor, Michigan 79 



41 Schematic layout of a marina showing desirable interrelation of facilities .... 81 



42 Commercial area, Westport Marina, Grays Harbor, Washington 82 



43 Space allocation for a typical marina 85 



44 Slope riprap showing two types of filters i 88 



45 Slope paving showing two types of filters 89 



46 Use of gabions in marina construction 91 



47 Use of filter cloth to seal timber bulkhead 92 



48 Timber bulkhead at Bellingham , Washington 93 



49 Failing timber bulkhead 94 



50 Low-height, free-standing aluminum bulkhead 96 



51 Concrete L-wall under construction, Dana Point, Cahfornia 99 



52 Typical concrete sheet-pile section with grooves for grout-sealing joints .... 100 



53 Cap and tie rod system for concrete sheet-pile wall 102 



54 Typical pile-supported L-wall for weak soils 103 



55 Spalled face of concrete wall due to inadequate rebar imbedment 104 



56 Molded concrete bank simulating natural conditions 106 



57 Shilshole Bay Marina, Washington. Interior steel pile -supported timber wave 



barrier 107 



58 Alternating wave baffles protect a berthing area 108 



59 Cooperative switch-tie system for a two-boat slip Ill 



60 Two-boat sUp compartmented by a narrow tie finger 112 



61 Lightweight sailboats stored on floating docks 112 



62 Charter boats tied stern-to-dock, Miamarina, Florida 113 



63 Dimensional criteria for berthed craft 114 



64 Tri-maran berthed at West Palm Beach Marina, Florida 115 



65 Modular star-cluster floating slips 115 



66 Locker boxes, firefighting equipment and utilities along a wide main walk at 



Dinner Key Marina, Florida 117 



67 Cantilevered boarding fingers at Occoquan Marina, Virginia 117 



68 Raised-level finger pier junctions with main walk 118 



69 Hanging boarding ladders. Old Town Yacht Haven, Alexandria, Virginia .... 118 



70 Batten-protected creosoted-pile tops, Lighthouse Point Marina, Pompano 



Beach, Florida 119 



71 Proposed use of prestressed deck slabs for fixed pier construction 121 



