The ornamental design for a boatlightingsystem, as shown and described.
FIG. 1 is a perspective view of a boat lighting system showing my new
design;
FIG. 2 is a top plan view thereof, the bottom plan view being a mirror
image except for the omission of the switch from the bottom surface of
each control box;
FIG. 3 is a right side elevational view thereof, the left side being a
mirror image;
FIG. 4 is an end elevational view thereof, the opposite end being a mirror
image.
The boat and interior power supply are shown in broken lines for
illustrative purposes only.