Graphical design for a boat

FIG. 1 is a side view illustration of a first embodiment of our graphical design for a boat, depicting generally one potential position for placement of the design on the boat;

FIG. 2 is an enlarged view of the graphical design depicted in FIG. 1 with the environment removed;

FIG. 3 is a side view illustration of a second embodiment of our graphical design for a boat, depicting generally one potential position for placement of the design on the boat; and,

FIG. 4 is an enlarged view of the graphical design depicted in FIG. 3 with the environment removed.

Where included, the broken lines showing environment or structure are for illustrative purposes only and form no part of the claimed design.

The omission of a view indicates that the omitted view is plain and unornamented.