Roving does indeed mean to wander. The speed is subject to best professional judgement but it definitely does not mean watching the stars go by on the back deck for hours at a stretchLots of good points there, to my train of thought, roving means moving. I'm pedantic that way in thought and when either employed as a roving watch at sea or over those that were.. it meant moving. Stop for a break every 45 mins or so for a smoke and/or coffee for less than 5 mins and back roving.