transome angle
 

Anyone know the transome angle on a 18sf? 1977. Transducer issues

No-one knows this answer or is it just a dumb question?

I don't know but I do know it is within the range where Airmar recommends not using the wedge if you have one with your transducer. Generally you should run a straight edge along the bottom of the boat. The leading edge of the transducer should be 1/8" inch or so under that line, the trailing edge should be maybe another 1/8" below that so around 1/4" at the rear. Has always worked for me on various boats and this is what the installation instructions will say or close to it.

No such thing as a dumb question if you are thinking.

How do you present yourself to Cobia?

13 degrees comes to mind