Submersible Watercraft

FIG. 1 is a front, top, right-side perspective view of a submersible watercraft showing a first embodiment of our design; FIG. 2 is a back, bottom, left-side perspective view thereof; FIG. 3 is a front view thereof; FIG. 4 is a back view thereof; FIG. 5 is a left-side view thereof; FIG. 6 is a right-side view thereof; FIG. 7 is a top view thereof; and FIG. 8 is a bottom view thereof. FIG. 9 is a front, top, right-side perspective view of a submersible watercraft showing a second embodiment of our design; FIG. 10 is a back, bottom, left-side perspective view thereof; FIG. 11 is a front view thereof; FIG. 12 is a back view thereof; FIG. 13 is a left-side view thereof; FIG. 14 is a right-side view thereof; FIG. 15 is a top view thereof; and, FIG. 16 is a bottom view thereof. The dash-dot broken lines depicting break lines in the submersible watercraft, and any portions between the break lines form no part of the claimed design. The dash-dash broken lines illustrate portions of the submersible watercraft that form no part of the claimed design.