TABLE 4-4 



Summary of Proof Loading Tests on Standard Hardware at Bermuda NOB 

 (October, November 1967) 



Component 



Result 



Both 100' Outer Mooring 

 Chain Leaders 

 (3/8" Proof Coil) 



Loaded with 5800 lbs. for five minutes, 

 O.K. 



150' Inner Mooring 

 Chain Leader 

 (7/16" Proof Coil) 



Broke weak link at 7800 lbs. tension. 

 Repaired with 1/2" shackles and re- 

 tested at 7800 lbs. for five minutes, 

 O.K. (See Fig. 4-6). 



Critical 7/16" Galvanized 

 Steel Shackles 

 (Crosby-Laughlin G-215) 



Critical 1/2" Galvanized Steel 

 Shackles 

 (Crosby-Laughlin G-2150) 



Four 3/8" Stainless Steel 

 Shackles (Type A) 



Critical 7/16" Stainless Steel 

 "D" Shackles (Type B, Nor- 

 wegian) 



Eye Splice on 3/4" 3 -strand 

 Nylon Rope 



Eye Splice on 1 1/4" 3 -strand 

 Nylon Rope 



Loaded with 5800 lbs. for five minutes, 

 O.K. 



Loaded with 7800 lbs. for five minutes, 

 O.K. 



Fractured with 10, 000 lbs. load. Dis- 

 carded this type shackle, (See Fig. 4-S). 



Loaded with 10, 000 lbs. for five minutes, 

 O.K. 



Loaded with 7800 lbs. for five minutes, 

 O.K. 



Loaded with 12, 000 lbs. for five minutes, 

 O.K. 



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