rule of thumb would be that the beam must be at least 0.8 times the 

 design wavelength. 



Mooring Loads - Empirical 



Mooring load signals from the largest recorded wave height 

 event are shown in Figure 6. It can be seen that the mooring load 

 fluctuates with the passage of each wave. There is a well-defined 

 minimum load on each gauge during a record, and local maxima which 

 appear to be correlated with wave groups. 



Dimensional analysis of wave-induced mooring loads (Harms et 

 al. 1981) has shown that 



[6] Fj = <^{L/D^, H/D^, D^/h, B/D^) 



where Fj is the dimensionless peak mooring load, D^ is the outside 

 tire diameter (approximately 64 cm) and 



Fm=.vCose 

 [7] F, = Jll^^L— 



where F is the maximum measured load (Newtons) at a gauge 

 max 



during a record 

 p density of fresh water in kg/m^ 



g gravitational acceleration (m/sec^) 



88 



