I have one but it's on our boat in Greece. The one we have was prepared by Opal Marine ( the UK dealer at the time ) & is of almost no value! Once you've spent a day aboard you'll know far more than the manual will tell you.
You should have received all the original manufacturers manuals for the equipment installed both in the factory and on commissioning. I'd make it a condition of sale that they are provided by the seller.
John
