Quote Originally Posted by ebb
Should I have the all-round 'anchor' light on as well?
My guess is that It would appear not, since you are NOT anchored. But then again . . .

According to Chapman, each light covers a specific arc of visibility. If this is understood, then the orientation of the vessel at night becomes clear. For example, P&S running lights have an 112.5 degree arc. Steaming lights face forward and cover 225 degree. Stern lights face aft and cover 135 degrees. Combined, the stern and steaming lights do cover a full 360 degrees. An anchor light also covers 360 degrees. . So, . . . ?