Originally Posted by GaryC
I am assuming...
... That even though the RYA produce two separate sylabi for sail and power, that the requirements are the same?
In the case of power, the book to refer to is the one I have extensively quoted from. As far as I can see there is no requirement to live aboard in the (power) Yachtmaster coastal or offshore sections and it is necessary for Ocean only because of the durations required.
The reason for the living aboard stipulation with the sail exam may have more to do with the time it takes to cover great distances when under sail. 60nm at 6 knots is clearly a very different boating experience to doing the same at 20kn.