Some Hydrodynamic Aspects of Ship Maneuverability 



Fig. 6 - Bottom view of MARINER hull 

 in the circulating water channel show- 

 ing the flow pattern at a -10° drift angle 



idealized analytical solutions for the hydrodynamic force and moment, in spite 

 of the complexity of the real physical flow. 



ANALYTICAL EXPRESSIONS FOR THE FORCE 

 AND MOMENT 



As in the case of ship motions in waves, there are two common methods for 

 obtaining in analytical form the hydrodynamic force and moment which act on a 

 ship hull during a maneuver. We can use our physical understanding or empiri- 

 cal knowledge to formulate equations in which the force and moment have an as- 

 sumed dependence on the motions of the ship, generally in the form of Taylor 

 series expansions in powers of the displacements, velocities and accelerations 



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