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The ornamental design for the boat ladder, as shown and described. |
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FIG. 1 is a side elevational view of the boat ladder showing my new design;
FIG. 2 is the opposite side view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a side elevational view thereof, the broken lines showing the transom of a boat is for illustrative purposes only, and forms no part of the claimed design.
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