TABLE 5 



Basic Statistical Data on Stresses 



Sea 

 State 

 (Est'd) 



Significan 

 Wave 

 Heigtit 



ft 



Heading of 



Waves [Relative 



to Ship 



Ship 

 Speed 



knots* 



A' 

 Number of 

 Variations 

 per Hour 



l^inutes 

 Sampled 



E 



Predicted 



Maximum Value 



for 1-hr 



Operation 



kips 



Maximum Measured 



Peak-to-Peak 



Variation 



kips/in.^ 



Number of Variations 



in Sanple 



from Which 



Maximum Was Obtainel 



Predicted 



Maximum 



Peak-to-Peak 



Variation 



Ratio 



Predicted 



Maximum to 



Measured Maximum 



2 



G 



Head 

 Seas 



10 

 14 



670 

 784 



30 

 32 



0.22 

 0.31 



1.20 

 1.44 



1.2 

 1.5 



335 



418 



1,13 

 1.37 



0.94 

 0.91 



2 



6 



Quaiter 

 Head 

 Seas 



10 

 14 



256 

 1004 



37 

 32 



0.21 

 0.24 



1.08 

 1.30 



1.2 

 1.3 



158 

 536 



1.03 

 1.22 



0.86 

 0.94 



2 



6 



Beam 

 Seas 



10 

 14 



522 

 666 



29 1/2 

 32 



0.37 

 0.29 



1.52 

 1.38 



1.6 

 1.7 



257 

 355 



1.43 

 1.31 



0.89 

 0.77 



2 



6 



Quarter 



Following 



Seas 



14 



640 



27 



0.22 



1.19 



1.5 



288 



l.U 



0.74 



2 



6 



Following 

 Seas 



14 



392 



32 



0.36 



1.46 



1.4 



209 



1.39 



0.99 



3 



7-9 



Head 

 Seas 



10 



14 

 17 



621 

 778 

 991 



26 

 32 

 27 



1.12 

 1.28 

 1.21 



2.70 

 2.92 

 2.88 



2.6 

 2.8 

 2.9 



269 

 414 

 446 



2.5 



2.84 



2.72 



0.96 

 1.01 

 0.94 



3 



7-9 



Quarter 

 Head 

 Seas 



10 

 17 



864 

 711 



27 1/2 

 37 



0.11 

 0.16 



0.86 

 1.02 



0.9 

 1.0 



396 

 438 



0.81 

 0.985 



0.90 

 0.99 



3 



7-9 



Beam 

 Seas 



10 

 17 



503 

 685 



29 

 26 



0.19 

 0.18 



1.09 

 1.09 



0.94 

 0.97 



243 

 297 



1.02 

 1.01 



1.08 

 1.04 



3 



7-9 



Quarter 



Following 



Seas 



17 



459 



31 



0.15 



0.96 



1.0 



237 



0.905 



0.91 



3 



7-9 



Following 

 Seas 



17 



360 



23 



0.09 



0.72 



0.59 



138 



0.666 



1.13 



4 



16 



Head 

 Seas 



14 



768 



30 



1.17 



2.8 



3.1 



384 



2.64 



0.85 



5 



21 



Head 

 Seas 



7 1/2 

 14 



581 

 790 



27 1/2 

 24 



2.81 

 3.50 



4.2 

 4.8 



3.9 

 4.5 



265 

 318 



3.96 

 4.48 



1.02 

 1.00 



5 



21 



Quarter 

 Head 

 Seas 



7 1/2 

 14 



598 

 694 



38 1/2 

 28 1/2 



2.34 

 3.00 



3.9 

 4.4 



3.9 

 4.0 



384 

 330 



3.73 

 4.16 



0.96 

 0.96 



5 



21 



Beam 

 Seas 



7 1/2 



532 



30 



1.3 



2.8 



2.7 



266 



2.69 



1.00 



5 



21 



Quarter 



Following 



Seas 



7 1/2 

 10 

 14 



449 

 328 

 344 ' 



28 

 29 

 27 



0.86 

 1.12 

 1.01 



2.3 

 2.5 

 2.4 



2.0 

 2.3 

 2.3 



212 

 159 

 155 



2.14 

 2.38 

 2.25 



0.94 

 1.03 

 0.98 



5 



21 



Following 

 Seas 



7 1/2 

 14 



325 

 300 



33 

 31 



1.90 

 1.57 



3.3 

 3.0 



3.6 

 3.1 



179 

 155 



3.14 

 2.82 



0.87 

 0.91 



•The speed is the nominal speed read from a calibration curve of propeller rpm versus knots; 

 7 1/2, 10, 14, and 17 knots correspond to 94, 127, 185, and 230 rpm, respectively. 



14 



