How to Automatically Aim Shot Spawns at Player (Space Shooter)

I have followed the Space Shooter tutorial, up until spawning enemy ships. Now I have an idea to create a new kind of enemies with automatic turrets which always shoot bolts at the player position. I thought to modify the shotSpawn.rotation.y to aim at player ship position, but I'm clueless about how to do so.

I'm a newbie on C# so please give a detailed answer, if you will.