Table 3 



Hatteras (Rollison Channel) Small-Boat Harbor Breakwaters 



Hatteras, North Carolina, SAW 



Date(s) 



1956- 

 1958 



Construction and Rehabilitation History 



1985 



In 1956, at a cost of $115,600, two rubble-mound breakwaters were 

 constructed at the entrance to Hatteras Small-Boat Harbor (Fig- 

 ure 6) . The east and west breakwaters were 355 and 300 ft long, 

 respectively. The design section consisted of a crown width of 8 ft 

 at an elevation of +5 ft mlw and side slopes of 1V:1.5H and 1V:1.25H 

 on the sound and harbor sides, respectively. The structures were 

 made up of a 1-f t-thick mat of small stone (size unknown) , core 

 stone (size unknown), and 1- to 2-ton cover stone. The armor stone 

 was sized using a 5-ft design wave height and Hudson's slope sta- 

 bility equation. Approximately 6,940 tons of stone were placed. 

 After construction, local interests indicated difficulties with ves- 

 sels passing through the narrow, 60-ft gap between the breakwater 

 heads. In 1958 a timber dolphin fender system was placed on the 

 heads to minimize potential damage to vessels. 



The breakwater has had no maintenance or repair since its 

 completion. 



Figure 6. Hatteras (Rollison Channel) 

 Small-Boat Harbor, North Carolina 



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