(a) Define the six types of ship motions. (6)

(b) In the context of ship stability, what does static stability refer to:

(i) The ships's resistance to rolling in waves.

(ii) The ship's ability to return to equilibrium after a displacement without wave action.

(iii) The dynamic response of a ship in irregular seas.

(iv) The resistance to hull slamming.

Briefly justify your answer. (10)