Table A-1 . Forces Acting on 1 ,000 Feet of Boom Under Catenary Tow 



Parameters 



Boom Types 











Type I, Class 1 



Type I, Class 2 



Type II 



Tow Speed, knots 



1 



1.5 



2 



Wind Speed, knots 



15 



20 



25 



Wave Height, feet 



0.416 



0.75 



1.0 



Wind Force, pounds 



269 



864 



1,800 



Drag Force, pounds 



2,231 



9,823 



25,390 



Total Force, pounds 



2,500 



10,700 



27,200 



Towline Force, pounds 



1,250 



5,350 



13,600 



Table A-2. Forces Acting on 1,000 Feet of Boom in Straight Tow 



Parameters 



Boom Types 











Type I, Class 1 



Type I, Class 2 



Type II 



Tow Speed, knots 



10 



10 



10 



Skirt Depth, feet 



0.667 



0.333 



2.0 



Total Drag Force, 

 pounds 



570 



1 ,140 



1,700 



37 



