/ Plan 6 (Plate 4) involved the elements of Plan 5 with a 6.1-m (20-ft) 

 sheet-pile extension that terminated at the same point as the Plan 2 

 structure extension. 



g. Plan 7 (Plate 4) entailed the elements of Plan 5 with a 12.2-m (40-ft) 

 sheet-pile extension that terminated at the same point as the Plan 3 

 structure extension. 



h. Plan 8 (Plate 5) consisted of a 33.5-m-long (110-ft-long) southerly dogleg 

 extension of the north breakwater. 



i. Plan 9 (Plate 6) consisted of the 51.8-m-long (170-ft-long) sheet-pile 

 breakwater of Plan 7; but the existing north breakwater was removed and 

 the depths in the harbor west of the new structure were installed to an el 

 of -1.83 m (-6.0 ft). 



j. Plan 10 (Plate 6) entailed the elements of Plan 9, but the north structure 

 extension was reduced by 6.1 m (20 ft) in length. 



k. Plan 11 (Plate 7) included the 51.8-m-long (170-ft-long) breakwater 

 configuration of Plan 9, but the structure was raised from +2.13 m 

 (+7.0 ft) to +6.1 m (+20.0 ft) in height. 



/. Plan 12 (Plate 8) involved the 51.8-m-long (170-ft-long) breakwater 

 configuration of Plan 9, but a 59.4-m-long (195-ft-long) stone absorber 

 was installed along the west wall of the harbor. The absorber used inside 

 the harbor for this and subsequent plans included 1,815-kg (2-ton) stone 

 installed on a 1V:1.5H slope with an el of +2.13 m (+7.0 ft). The 

 absorber used on the lakeside of the harbor in subsequent plans included 

 9,070-kg (10-ton) stone installed on the same slopes and el. 



m. Plan 13 (Plate 8) entailed the 51.8-m-long (170-ft-long) breakwater 



configuration of Plan 9 with the 59.4-m-long (195-ft-long) stone absorber 

 of Plan 12 and an additional 39-m-long (128-ft-long) stone absorber 

 installed on the lakeward side of the north breakwater. 



n. Plan 14 (Plate 8) included the 51.8-m-long (170-ft-long) breakwater 

 configuration of Plan 9 with the stone absorbers of Plans 12 and 13 and 

 an additional 42.7-m-long (140-ft-long) stone absorber installed on the 

 harbor side of the north breakwater. 



o. Plan 15 (Plate 9) consisted of the 51.8-m-long (170-ft-long) breakwater 

 configuration of Plan 9 and the absorbers of Plan 14, but the 59.4-m-long 

 (195-ft-long) absorber along the west wall of the harbor was removed. 



p. Plan 16 (Plate 10) involved the 51.8-m-long (170-ft-long) breakwater 

 configuration of Plan 9 with a cumulative 137-m (450-ft) length of stone 

 absorber installed along the west wall of the harbor and the harbor sides 

 of the breakwaters. 



Wave-height experiments. Wave-height experiments were conducted for 

 existing conditions and various improvement plans for representative experimen- 

 tal waves from the various incident directions. Experiments involving some 



42 Chapter 6 Physical Model 



