Am contemplating purchasing a Type 2 Rotary drive (Raymarine M81136) to replace the non-functioning ST7000 drive unit for my 38', 12 ton sailboat. I need to know if the Raymarine M81136 will be compatible with the control unit (ST7002 - vintage 2005-06) and the Raymarine course computer - probably from early 1990s. There is no power-assist or hydraulics. The course computer needs to talk to the new drive unit, and the requirements are to be able to turn the auto-pilot on and off, that it will work mechanically, and that it will minimally hold a heading. The boat is used for California coastal and bay sailing.
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