4. Strip Theory, Mass & Damping

Question 1

Strip theory for ships validity criterias

Answer 1

Head and bow waves
Omega_e must be large to limit 3D effects
Body geometry must be elongated (can be used down to L/B =2.5)
Linearity must be valid
Steady-unsteady flow interaction neglected
Fn < 0.4

Question 2

For restoring loads, C11, C22 and C66 are zero because

Answer 2

The motions do not cause a variation in displaced volume

Question 3

What does RAO peovide

Answer 3

The transfer function if the body motions amplitude

Question 4

For a semi submersible, resonance can only be caused by

Answer 4

No linear effects in steady-state conditions