The ornamental design for an unmannedunderwatervehicle, as shown and described.
FIG. 1 is a perspective view showing my new design for an unmanned underwater vehicle;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The dash-dot broken lines immediately adjacent the shaded areas represent the bounds of the claim and all other broken lines represent portions of the article that form no part of the claim. None of the broken lines form a part of the claimed design.