12. Fineness of Hull form and Resistance to forward motion.

Question 1

What are the four components of Resistance to forward motion and how can you reduce them?

Answer 1

1. Water Friction:
   
   • Smooth hull
   • Low friction coating on hull.
   • No sea life or growth on hull.
2. Wave Pattern:
   
   • Bulbous Bow reduces resitanc e
   • Finer lines at the bow and around the ship = Small Cb (Block Coefficient)
3. Eddy Making:
   
   • Created by pour water flow and cavitation
4. Wind Resistance:
   
   • Rounded or sloping bridge fronts
   • Streamlined masts and funnels are beneficial