Outer causeway dock 



6.71 m (22.0 ft) 



Inner causeway dock 



3.35 m (11.3 ft) 



Turning area 



3.11 m (10.2 ft) 



Interior channel 



0.73 m (2.4 ft) 



For 12-sec, 6-m (19.7-ft) waves from 227 deg, maximum wave heights for Plans 14 

 and 16 were as follows: 



Outer causeway dock 

 Plan 14 



2.96 m (9.7 ft) 



Outer causeway dock 

 Plan 16 



2.96 m (9.7 ft) 



Inner causeway dock 

 Plan 14 



1.83 m (6.0 ft) 



Inner causeway dock 

 Plan 16 



1.77 m (5.8 ft) 



Turning area 

 Plan 14 



2.65 m (8.7 ft) 



Turning area 

 Plan 16 



2.74 m (9.0 ft) 



Interior channel 

 Plan 14 



0.46 m (1.5 ft) 



Interior channel 

 Plan 1 6 



0.52 m (1.7 ft) 



Current patterns and magnitudes obtained for Plans 13-15 are presented in 

 Plates 25-41 for various wave conditions and incident directions. For waves from 

 137 deg with Plan 13 installed, currents east of the new breakwater moved westerly 

 along the shoreline and then southerly along the new structure. Currents west of the 

 causeway also moved seaward along the structure. Maximum velocities were 

 1 .52 mps (5.0 fps) adjacent to the new breakwater and 0.98 mps (3.2 fps) adjacent 

 to the causeway for 5-m (16.4-ft) wave conditions with the +0.5-m (+1.6-ft) swl. 

 For Plan 14 with waves from 182 deg, currents along the shoreline east of the new 

 breakwater and west of the existing entrance moved to the west along the shoreline 

 and then to the south along the new structure. Currents east of the existing entrance 

 moved in an easterly direction. Currents west of the causeway moved seaward along 

 the structure. Maximum velocities were 1.65 mps (5.4 fps) along the new 

 breakwater for 12-sec, 5-m (16.4-ft) waves and 0.55 mps (1.8 fps) along the 

 causeway for 12-sec, 2- and 5-m (6.6- and 16.4-ft) waves. Currents along the 

 shoreline east of the new breakwater, with Plans 14 and 15 installed, split for waves 

 from 227 deg. Some moved easterly toward the existing entrance and along the 

 shoreline, while some moved westerly along the shoreline and then southerly along 

 the new structure. Currents west of the causeway moved seaward along the 

 structure for both plans. Maximum velocities were 1.13 mps (3.7 fps) along the 

 new breakwater and 1.43 mps (4.7 fps) along the causeway for Plan 14 for 12-sec, 



Chapter 4 Experiments and Results 



29 



