The ornamental design for a combined boatsteeringwheel and support column, as shown and described.
FIG. 1 is a side elevational view of the combined boat steering wheel and
support column;
FIG. 2 is a front elevational view thereof; and
FIG. 3 is a perspective view thereof.
The base has been omitted from FIG. 3 for ease of illustration. The portion
of the drawings shown in broken lines are for illustrative purposes only
and do not form a part of my claimed design.