The ornamental design for a watercrafthull, as shown and described.
FIG. 1 is a front perspective view of a watercraft hull, showing the novel design.
FIG. 2 is a rear perspective view of the watercraft hull shown in FIG. 1.
FIG. 3 is a top plan view of the watercraft hull shown in FIG. 1.
FIG. 4 is a bottom plan view of the watercraft hull shown in FIG. 1.
FIG. 5 is a right side elevation view of the watercraft hull shown in FIG. 1.
FIG. 6 is left side elevation view of the watercraft shown in FIG. 1.
FIG. 7 is front elevation view of the watercraft hull shown in FIG. 1; and,
FIG. 8 is rear elevation view of the watercraft hull shown in FIG. 1.
The broken lines showing the steering wheel and tower depict environment and forms no part of the claimed design. All other broken lines depict portions of the watercraft hull that form no part of the claimed design.