Why is my rocket drifting north?

Why is my rocket drifting north? - A Car Drifting

So I just built this unmanned rocket:

Screenshot of Kerbal Engineer Redux 1.1.1.0 rocket

Although the center of mass is in the center of the rocket it is "drifting" north when I launch it.
Since I play in career mode and I'm still very early in the game I only have access to the basic Sputnik Command Pod which does not support SAS. I tried using the WASD keys to hold against it but the rocket doesn't react to it.






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SABATON - Rorke's Drift (Official Lyric Video)




Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Mat Sheard, Leif Bergerson, SpaceX, Trace Constant