(DG) Can I use a P70R control head on a sailboat?

I just purchased a new Smartpilot SPX5 wheelpilot for my Humter Vision 32, only to find it came with the P70R control head vs the P70 which is designed specifically for sailboats. My question is: can I still use the P70R control head on my boat, or will I not be able to calibrate it properly? The relevant documentation appears to be missing from the Raymarine website ( at Least to my iPad) as it just states that the P70 was designed primarily for sailboats, and the P70R for powerboats. The documentation that comes with the wheelpilot does not even mention the P70R, and refers exclusively to the P70 for set up and calibration.
Now what?