No Sails!!
 

Hi after a recent patch when my ship's sails came off and i repaired it the sails dindint come back!! Anyway how do u get more special cannonballs (ike chain shot)

The sails being damaged is currently a bug.

As for cannon ammo, you can get more from pistol shops. It's hard to notice because the picture isn't there but you want the bottom tab on the left hand side. And you unlock more special cannon shots by leveling your cannon skill and selecting the appropriate skill.

This has been happening to me too. My ship looks so pitiful starting its pillaging with already destroyed sails and burning up. I hope they fix this soon. I repaired it-really I did! :-P