Support base for boat light pole

FIG. 1 is a top, perspective view of a support base for a boat light pole showing my new design with the cover closed and the broken lines showing the electrical element being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a top, plan view thereof with the cover closed;

FIG. 3 is a top, plan view thereof with the cover open in the position wherein the light pole (not shown) is mounted;

FIG. 4 is a right side, elevational view thereof with the cover closed, the left side being a mirror image and the broken lines showing the electrical element being for illustrative purposes only and forming no part of the claimed design;

FIG. 5 is a front, elevational view thereof with the cover closed and the broken lines showing the electrical element being for illustrative purposes only and forming no part of the claimed design;

FIG. 6 is a rear, elevational view thereof with the cover closed and the broken lines showing the electrical element being for illustrative purposes only and forming no part of the claimed design; and

FIG. 7 is a bottom, plan view thereof, the broken lines showing the electrical plug being for illustrative purposes only and forming no part of the claimed design.