Fresno Flight Center

What Latitude 64 says about the Culverin:

Culverin - A lot of fairway drivers fly too straight, a lot of them are too overstable. The Culverin fits right in between. For advanced players the first part of the flight will be straight before it goes into a dependable fade.

Speed 9, Glide 5, Turn 0, Fade 2

My Own Take on the Disc
Opto Culverin
This disc is available in Opto @ $13 and Gold Line @ $15.
Gold Line Culverin