Baby boat with canopy

The design is the visual features of the SELF-INFLATING BABY BOAT shown in the drawings, whether those features are features of shape, configuration, ornament or pattern, or a combination of any of those features. The portions of the article shown in dashed lines form no part of the claimed design. The environment, shown in broken lines, does not form part of the design. Drawings are enclosed, in which: FIG. 1 is a perspective view of the SELF-INFLATING BABY BOAT in its environment; FIG. 2 is an elevational view of the front side of the SELF-INFLATING BABY BOAT as seen from the left side of FIG. 1; FIG. 3 is an elevational view of the right side of the SELF-INFLATING BABY BOAT of FIG. 1; FIG. 4 is an elevational view of the rear of the SELF-INFLATING BABY BOAT of FIG. 1; FIG. 5 is an elevational view of the left side of the SELF-INFLATING BABY BOAT of FIG. 1; FIG. 6 is a top plan view of the SELF-INFLATING BABY BOAT of FIG. 1; and FIG. 7 is a bottom plan view of the SELF-INFLATING BABY BOAT of FIG. 1.