I have just purchased a 1983 oday 25, my first sailboat. I have no previous sailboat experience. My problem is I have no idea what kind of keel is on the boat, as to know what kind of trailer it will take to move it. It is very cold, so no, there is no diving to check. If I understand correctly (from reading archive forums here)there are 2 different types on this model, fixed and centerboard. Is there a way to tell one from the other? I do know there is access in the bottom of the hull to what looks like a large pipe running through. Any help would be greatly appreciated!!